E46 fuel pump not priming. It’s more common than you would think.
E46 fuel pump not priming I replaced the fuel pump relay, I tried 4 different ones, so the fuses and the relay can be ruled out. This sounds like a really Fuel pump 101 Yes you can retrofit the LPHV pump in the tank with a HPLV. I got everything buttoned back up and took it for a drive. Sometimes worked! - Replaced rims and tires from 19" ZCP to base 18" The normal E46 fuel pump is an "on/off" pump driven by the relay. E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren 1999 E46, fuel pump operates when relay is jumped with wire;but car blows fuse 25amp @ ECM when ignition is engaged. E46 General. Different indy mechanic replaced Continental with OEM but not sure about manufacturer. Porsche's ran a whole battery of pumps E39 (1997 - 2003) E46 (1999 - 2006) E36 (1991 - 1999 I changed the fuel filter which hasn't been changed in probably 50K miles (the fuel was practically black when I emptied the old filter out). The engine of the Maicoletta used an unusual starter that rocked the crankshaft back and forth before firing instead of rotating it. Come join the discussion about M performance When key position 2 (one before ignition) is reached you can hear the fuel pump "prime" - sounds like a mechanical buzz/hum. While you do not have enough information to fully understand what is really going on, depending on the year, mileage and expected operating hours it might be wise to consider a BMW 3 Series Forum - Technical Talk on the BMW E46. 2) Loosing pressure somehow once car is off. Post Cancel. Then the fuel pump has about 4. The main pump is on the passenger side (fill neck side). , 111 Peter Street, Suite 600 The fuel pump prime Voltage only lasts about 4 seconds. You may have to register before you can post: click the register link above to proceed. thus unable to hold any pressure on the rail after shut down. This caused a spark and it has been all downhill Problem: Fuel pump will not prime. The sound only lasts for a few moments. Actually, priming the car manually by jumping the pins caused something interesting this weekend, typically doing this will start the car for 10-20 sec and then die off, but during one test, the car stayed running. I’m getting ready to fire up my rebuilt 6. I know the sound of the prime and this isnt it. Jump to Latest 5. This is typically not an issue with well engineered pumps. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Manage Consent I think my fuel pump went kupuut but I want to make sure the relay didnt go bad first. That's all the fuel pump does. Sadly, the Clogged Fuel Filter: A blocked filter restricts fuel flow, hindering the pump’s priming process. Come join Hello, so my 2004 bmw e45 325i die on my the other day, I couldn't listen to the fuel pump come on while I turned the ignition. . ) Turn key to position #2 (run) to prime fuel system The E46 system features two pumps. Consequently, crucial parts such as the impeller will wear out, creating Today's Posts; Member List; Calendar; Forum; Vehicle Discussion; E46 (2001 - 2006) If this is your first visit, be sure to check out the FAQ by clicking the link above. BMW E46 320d Touring, year 2002, 460 000 km. My 2004 BMW 330ci has been hit with cold start issues. 88. I bought a used one and still nothing. The fuel pump is running the entire time engine is operational. If not you could try a little WD40 into the outlet, leave it to soak for a minute or two and then try again. E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG VerticalScope Inc. Save Share For those wanting to see more of BMW's 4th generation 3 series, the beautiful and timeless E46. There is voltage when cranking but no voltage Spike to prime the pump. 35K subscribers in the e46 community. The fuel pump relay has 12V going into it, which I measured with a volt meter. Try changing your fuel filter 1st if you have not done so recently as excessive blockage will cause harmful strain on your pump thereby causing your noise. I've checked all the fuses and replaced every one that has something to do with the fuel system, even if they didn't look burnt. The fuel pump and relay are both good, however I am getting no power to the fuse or the pump. Today I took voltages at the fuel pump wiring harness 0v, fuel pump sending unit 0v and fuel pump fuse 0v. After that, your fuel system may be clogged or your ignition system problematic or even your emissions e. So recently there has been a few cooling issues and I've replaced the radiator all hoses and coolant but the fuel pump isn't priming anymore. After having read about the fuel pumps failing in the e46 generation, I ordered a fuel pressure gauge to check the pressure of my 07/2001 320i touring M54B22. 2002 e46 m3 smg not starting help! Jump to Latest - SMG/Fuel pump currently not priming but was going in and out - Open and closed hood, trunk, gas cap, and both doors. Sounds like fuel pump and filter time. 3K views When you turn on the ignition can you hear the fuel pump priming? Have you measure the battery voltage? Just because the radio works it doesn't mean it has enough amps to crank the engine. Fuel pump does not appear to get 12V on any of combination of the 4 connector contacts when ignition is turned on. I am also not getting power to the cam shaft position sensor. then all you have to do is install the new unit in reverse order then flip the ignition switch a few time on and off to prime the pump that way there is enough fuel at the motor to have No tach signal, not relay closure, no power to fuel pump. If I were to guess, there is some kind of a timer to determine whether it’s necessary to prime the fuel pump or not. And some of the E46 fuel pumps fail even before that. Everything hooked up flashed to V3 software, etc. Fuel pressure - looks good on priming, idle (48psi). Being young and a student, naturally I ordered a pump and decided to replace it myself. Hi, I have a 2004 325i that won't start. However, can this broken vacuum line contribute to the fuel pump not priming? If so then I Fuel pump primes and (appears) to be operating fine given the road test). the QFS fuel pump, as listed by OP in his 'How To', which I put in, had a faulty or non existent check valve. Fuel Pump will not come on if relay not jumped but fuse 25amp still blows when ignition turned on. MPG gauge is not based on fuel consumption. On a UK/euro car you can get the fuel pump to prime / run manually by grounding pin 10 at the X6004. Driving Or Idle Surging. The fuel pump on my E83 X3 (M54 engine) began to "soft fail" with less than 90k miles on it. The SULEV & M3 utilize a EKPS controller for the fuel pump. The pump works fine when the car is running, it just wont prime with the key on engine off. I also have a 2003 530i with the same engine. First diagnosis was the AA pointed me at the high pressure fuel sensor, odb was was showing low pressure. Fuel pumps on an E46 are known to fail at about 150K. There will be close to 12 Volts during the prime cycle for about 5 seconds when The main reason behind the fuel pump won’t prime may be a faulty fuel pump, the relay itself, or the internal suction mechanism that creates the air void. I do not have a way to bench test my old Replace the relay and the in tank fuel pump. - I checked fuse 54 - good - checked the green fuel pump relay- good With the Key in Position 2 fuel pump does not prime. The fuel pump on the e46 is so easy to change, it is probably easier than washing your car. A Faulty Fuel Pump Just like any other engine component, the fuel pump is prone to natural wear and tear. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada > No, it isn't $6,000 to repair a fuel pump AND no E46 fuel pumps are NOT wear and tear items that will fail. This is where the electric fuel pump is located. I can actually start the engine and run it with the fuel pump directly jumped. Of course the engine cranks but doesn't start if the fuel pump doesn't neither. Here is the problem: it cranks but will not start. I can't hear the fuel pump priming. I had the problem back in February, which I have written about in the background section. You also will not get power at the fuel pump for 10-15 seconds, maybe like 2-3 seconds for the Prime function when the My 2003 E46 330i is not starting. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada car cranking no start fuel pump fuel pump not priming fuel pump problems not starting. , 111 Peter Street, Suite 600, Toronto After I turn the ignition to position 2 30 times, only then will the fuel pump prime itself. So be it, but ill pull the pump and test the connections first. Xmak 330d. , 111 Peter Street, Suite 600, Toronto Car: 2000 e46 323i with a 328i engine swap Replaced: Fuel pump, fuel filter, relay. Just like any other engine component, the fuel pump is prone to natural wear and tear. Problem: Fuel pump will not prime. Any suggestions would be appreciated. The pump is not driven by the engine. The freeze frame data shows the code popped at higher RPMs, and that STFT on bank 1 was +22% while STFT on bank 2 was -20%, which is very odd. Do not run the car below 1/2 tank before you replace the fuel pump. , 111 Peter Street, The lean and misfire trouble codes point to too much air (vacuum leak) or not enough fuel (fuel pump or filter). , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Hi, I'm not very electrically minded, any help much appreciated: Trying to diagnose why the car cranks but won't start. Here’s the thing, I already got new battery (programmed), fuel pump, fuel filter, starter, alternator, crank and camshaft position sensors, all fuses are good, and I’m still having these problems. It did not generate any trouble codes. Then before I start the car I was going to crank the car for 10-20 with the spark plugs out and the fuel pump fuse pulled. Yeah this is the answer, when you put the key in to the accessory position you should hear the fuel pump prime. I did a fuel pressure test mostly as PM and I found that my priming fuel pump values seem odd, at least compared to other values I found on the iNet. R. Join Date: Jun 2020; Posts: 2653 #7. We know that the plug is getting Volts, can I do anything else before I have someone else look at it? No sound or any feeling of the pump priming. A perfect air/fuel mixture depends on the things: fuel pressure, MAP data, O2 sensor feedback, etc. Bimmerforums is the preferred online BMW Forum and community for BMW owners. I can't hear the pump priming anymore either. I haven't experienced any problems not priming the fuel system after a FF change. In both cases it may be hard to hear the pump running. I am able to hear the other pump in fuel tank priming and I can hear the fuel the M54 does not have fuel pressure sensors that can be read by an OBD reader. I would much rather replace a part at my leisure, than have to be flat bedded to the Ran fine for about 3 seconds then idled down and died. Worn Fuel Pump: Over time, the fuel pump can wear out, reducing its priming capacity. fuel pump relay location? E46 2004 I changed fuel pump last week and even after it still doesnt prime. My car's fuel pump does not prime, but I can get the vehicle to start after multiple instances of me playing back and forth with the ignition and trying to crank the vehicle. , 111 Peter Street, Suite 600, Since that occured I turn the key to ON in my garage I can hear the sound of the fuel pump priming the lines and coming up to pressure. However, the fuel pump may not start up again once it has cooled, so the best thing to do is immediately check your fuel pump to avoid further issues. Also replaced fuel filter since it was the original. I think the only way to have a completely silent fuel pump is by using one for many years. , 111 Peter Street, Suite 600 Hello, everyone, I hope you are having a great time and you could help me out with my problem. I am having a hard time finding the location of it. I towed the car home and started to troubleshoot it. After incorrectly relying on the OBD's display reading zero pressure, I confirmed that fuel was actually reaching the rail by testing physically at the Schroeder valve. , 111 Peter Street, Suite 600, Toronto I do not hear the fuel pump priming sound anymore, whenever i unlock the car, or open the door. is it because the fuel pump wont stop priming or wont reach pressure due to say the pressure regulator? either the relay or the DME. voltage to the battery 11. My fuel pump is not priming but it will turn on if I direct jump it. A Faulty Fuel Pump. No. It began to stumble at idle. A fuel pressure reading on an E46 suffering from fuel pump drain-back leak with the Key On Engine Off. The symptom is crank but not turning over/firing up, especially when temperature is cold (OP is in Seattle, so we are I recently purchased a 2000 328i 5 speed with 170,000 miles. They did not trust the current batch of in tank High pressure pumps to do the job reliably. It is pobably the pump but I want to make sure its not the relay. There are many reasons why a vehicle would not start but for this article, I will be explaining to you exactly what's involved in a fuel delivery system, what are some of the E46 Forums. , 111 Peter I immediately noticed the fuel pump would not prime. E39 (1997 - 2003) E46 (1999 - 2006) E36 (1991 - 1999) E60 / E61 Would pulling the line to the fuel filter, then priming the pump be a good option? I really don't want to go through the hassle of popping the pump right now. , 111 Peter Street, Suite 600 To me it sounds as if the engine isn’t getting fuel? i can’t hear my fuel pump priming in ignition position 2, and could the left over fuel in the hoses be why it started for half a second 2-3 times but no isn’t since it can’t access anymore fuel? E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG Pump is aftermarket for the simple fact that the OEM pump is expensive as balls! I mean if i have to buy one because this isnt cutting it. This article explains exactly why your fuel pump not priming and the possible fixes. All I did was remove the old filter and pop in a new one. r/e46 When my e36 VDO fuel pump failed I replaced it with a Hella assembly at 1/6 the price Just did a "fuel prime" via OBD2 And fuel started coming out the Sure a good pump can improve fuel mileage over the "bad" one. I’m using the green wire to trigger my Painless Wiring relay. That issue, and the fuel pump not priming are the two main issues I'm seeing. vpogv: as much as you DO have a fuel pump on the 00 you also have a fuel pump relay which acts as a fuel pump cut off in the event of an accident, its highly possible that you have either not plugged that in or its possible that its broken, short out the relay wires that link to the pump to test, the way it works is as soon as the ignition is on you should hear the pump 4. dash indications upon ignition to 2 show coolant temp gage to red and automatic transmission cog light instead of P E46 Forums. At this point the pump should be primed and then I was E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. hi my 2004 318i e46 has a new problem I have replaced the fuel filter and pump and still the pump wont prime for 2 secs. Used to solve this by hitting the Just to be sure you (and future readers) understand why a M3 fuel pump and not a standard pump is needed for the repair of a SULEV tank/pump. There's no influence from the O2 sensors to the fuel pump. Can someone please tell me where it is at? My car keeps cranking over and over but will not start. Checked the relay behind the fuse "panel" and it was fine. 3. 0L. If you do not get a prime, either the pump is faulty or there is no power to the pump. Our professionals are here to help make sure you find the answers you need to your questions and ignition on and fuel pump priming: 50 PSI ignition on and fuel pump off: 48 PSI engine cranking (when fuel pump turns immediately on again): 50 PSI E46 Fanatics Forum is not in any way affiliated with Bayerische I found that when I read the pressure at the fuel rail I get 50 psi when priming the fuel pump with ignition on, but when it stops priming the pressure drops to 0 near immediately. Gone but not forgotten: 2005 E46 M3 | 2006 Confirmed battery voltage on startup at fuel pump connector; Tried "whacking" the fuel pump with no success; Car currently is reading slightly below 1/2 tank. My fuel pump does not prime when i turn on ignition and does not pump fuel (checked the valve on the fuel rail after cranking). fuel pump priming. The anti drain back valve on the fuel pump removes the need to prime every time you turn key to position 2. Tested voltage to the fuel pump. This tells me the injectors and ignition coils are ok. I’m not getting power (3sec) at pump connector with ign on but good power when cranking, earth connection is good. I'm thinking this is a bigger no-start/no-crank issue. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada 2002 E46 330d Fuel pump issues. After replacing the fuel pump it still was not priming. So I'm guessing there might be a problem with the fuel pump relay. Save Share Reply #3 · Nov 9, 2012. - ive checked fuel pump fuse (54), but its fine (any When I rebuilt my motor I just pulled the fuel pump fuse and the plugs and spun the motor over on the starter 5-10 seconds a few times. I could hear the fuel pump prime before starting. Anyway, the bottom line is a spinning pump doesn't mean you have fuel delivery. no electricity to fuel pump. Goblin In 2021 indy mechanic replaced old fuel pump with Continental brand. So hang tight and read along. com for a good price on the Siemens-VDO oem pump. There are plugs/caps on the unused connections. Moderator. Starter . Battery voltage in the OBC was at 12. shawnsheridan 457 Replies. Battery voltage present at main terminal The thing is, I got a new fuel pump and still the same problem as before. Case closed! Even if this does not work, I would still replace the fuel pump anyway since the car is the wife and kid The fuel pump gets 12V and it sends fuel down the fuel line. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada This fuel flow enables the suction jet pump in the left side fuel tank to pump fuel into the right side fuel tank where the electric fuel pump resides. Mechanical Failures. Supposedly 4-5 volts is to prime the pump, and power the sending init, but I do not have wiring diagrams to verify. Signs and symptoms: about a month before it quit working I had a rough idle on a few occasions. My 318i e46 won’t start first thing but will later in the day. After I change it, the car actually ran for 5 miles before it died again. Jump to Latest The fuel pump is not going to come on until we've got power to green. When I turn the key on position 2, I don't hear the fuel pump prime "the buzzing sound", and when I Before you blindly buy a new fuel pump, at least do the following: check the fuel level using instrument cluster test 06 to see fuel levels on both left and right sides: E46 Instrument Cluster Test remove back seat bottom section and listen for the fuel pump priming when ignition key is turned to position 2 EWS doesn't control fuel pump prime directly, and I DON'T know if the DME needs a valid code E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG VerticalScope Inc. Fuel pump should be virtually quiet from inside the drivers cabin. The engine of the Maicoletta used an unusual starter that rocked the crankshaft So long story short, after finishing reassembling my engine I plugged in my fuel pump fuse while the key was in position 2. Unlike the simpler on/off relay for the normal E46 3er. What could be causing this? E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG VerticalScope Inc. At the minimum, fill the fuel filter housing. If you do not hear the pump prime, take the end of a hammer and wrap on the metal fuel pump retaining ring a few times pretty hard, the key again, if the fuel pump primes and you can start the engine, replace the fuel pump. Here’s what I was planning on doing to prime the pump. The engine computer uses that info and other parameters to tell the fuel injectors how long to run. , 111 Peter On an E46, the fuel pump is located in the fuel tank, but is accessed through the top of the fuel tank, which is accessed by removing the rear seat as detailed in JEmric's very fine DIY. If you don't hear the fuel pump prime, also check the fuel pump fuse before ruling out a dead pump. Reactions: Bali. Pumps are beaucoup bucks. A forum community dedicated to BMW E46, E90, and F30 owners and enthusiasts. It is a turbine pump and if you hear anything it would be at a very high frequency (whine). 4. Skip to main content. To confirm that you need to securely fit a fuel line onto the output nozzle and pass it to a jar then prime the pump and see if anything comes out. Checked fuse 54. Looking at the picture I have the trigger on 30 and ground on 87 Not to say its free from defect entirely, but if its priming the system, you are getting fuel up to the filter at least. Safety interlock in case the engine dies in an accident the fuel pump shuts down. 2003 E46 318ci intermittently not starting. Checked fp fuse, fp relay fuse. At Bimmerforums, you will find technical how-to information maintenance specifics audio advice wheel and tire combinations and model specific details not found anywhere else. , 111 Peter Street, Suite 600, Toronto Here is the problem: it cranks but will not start. Faulty Fuel Pressure Regulator: A faulty regulator can lead to excessive fuel pressure, preventing the pump from priming properly. I thought for sure I couldn't hear the old fuel pump priming when I turned the ignition on but it certainly was which I confirmed after the new one was in. You should hear the pump prime when you turn the key in the ignition, but you may need to remove the rear seat. If you’re not getting enough fuel pressure at KOEO, then I would likely suspect the fuel pump. Content on E46 Fanatics Forum is generated by its users. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada 16146766942E46 BMW E46 3-Series Fuel Pump Assembly OEM [Select Model:330i & 330ci 2001-2005] [Enter the last 7 of your VIN: I can always hear the pump prime when I turn the key, and it's not doing that. Listen for a hum coming from under the rear seat. It’s more common than you would think. 5 Volts while cranking. You do not want to cap this return fuel line. Jump to Latest Fuel pumps are not lifetime parts and one the post 2002 E46 they seem to be failing earlier than expect. SULEV uses a pump controller module (EKPS), so the best bet would be to fire up INPA and see if there is a diagnostic to activate the pump. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Manage Yesterday I primed the pump 10 times (priming was sometimes start/stop for the 2 seconds, as opposed to a solid 2 second priming and sometimes she just wouldn't prime at all when key turned to on) - She started and ticked over perfectly for about a minute, then died. E46 Fanatics Forum is not in any way affiliated with Bayerische At this point I was moving towards the crankshaft sensor, sparkplugs, and Fuel pump. It’s a crank no start situation. There’s no noise from the fuel pump when I turn the key into position number 2. I have checked every fuse and relay in the car. For those wanting to see more of BMW's 4th generation 3 series, the beautiful and timeless E46 Miniaturize yourself and go into the gas tank in a little submarine and put yourself near your fuel pump I want to make sure I don’t run into any issues with the new pump not priming when I first start it. The 30 number is random since I have noticed that the colder it is outside the more turns of the ignition is needed before the pump wakes up and this morning it was 38 degrees. I'd like to apply 12V to the pump itself to see if it runs but i don't know which contacts to apply the 12V to. R I half expected that not to make a difference to the fuel pump noise, and that was exactly the case. the o2 sensor Why Is My Fuel Pump Not Priming? 1. So I decide to pull the fuel pump from the e46 and put it in my e39 so I can diagnose. The big concern is that the fuel pump is lubricated by diesel. 3 Ohms. If fuel pump not priming then it's easy to troubleshoot for either bad pump or bad relay. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada The lean and misfire trouble codes point to too much air (vacuum leak) or not enough fuel (fuel pump or filter). The car is suffering from a no start condition in the mornings and after it has sat for long If fuel pump not priming then it's easy to troubleshoot for either bad pump or bad relay. So if it is not providing it when priming it, it is not working. Tags 330d fuel pump. When I turn the key, I can hear the fuel pump isn’t priming, so I replaced the fuel pump after checking all the fuses and relays were good and it’s still not working. Now the pump won't prime at all - tried last night and this morning. The fuel pressure regulator in the fuel filter is controlled by engine vacuum, and only regulates fuel pressure when the engine is running. If you find the answer, PLEASE post back as you may help someone else in the future. The crank sensor was just replaced and I have checked all of the fuses and the relay under the dash. The sound isn't there until the engine starts. Comment. Jump to Latest Relay is fine and I can hear both pumps prime although they do prime for a longgggg time! Save Share Reply Quote Like. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Manage Consent. To start viewing messages, select the forum that you want to visit from the selection below. We command the fuel pump on in the bi-directional menu simply by activating the fuel pump relay. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada 325i e46 fuel pump idle hunting rough idle. It is supposed to provide constant 50psi at all speeds, including primed with the engine off, and has no variable output. Pre-supply pump under the driver's seat does not prime on ignition, and therefore car won't start. Swap your horn and fuel relays around and most likely that The black fuel pump relay turns on the fuel pump to let it prime for about three seconds when the key is turned to the second click position. This allows the car's fuel rail to build fuel pressure, so when you ignite the engine, IMO, any E46 fuel pump with more than 120k miles, is living on borrowed time. The fuel pump has been drawing too much amperage and has damaged the relay. You will not see power to the fuel pump again until the engine is Crank sensor does have something to do with power to the fuel pump, BUT not for priming. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada So got a 04 e46 320dse coupe, and having a right issue with the fuel pump not engaging. I do not have a solid current draw on the E46 fuel pump, but most fuel pumps draw around 6 Amps when running. Checked all fuses and every one of them were completely fine but Bought a bit of a project e36 323i sedan 1996. g. Need help before I spend money where it’s not needed. I searched over and over on the internet and couldn't find the same problem I have, so here it goes. However once it has started it gets a prime voltage for every restart. We don't care about purple. Fuel pump (and filter) replacement cured all of the E46 (2001 - 2006) If this is your first visit, be sure to check out the FAQ by clicking the link above. I am not sure if the fuel pump has been replaced by any of the previous owners. So I first used my scanner on the 530i e39 to activate my fuel pump relay, and boom, fuel pump kicks on and primes right away. On this particular model, activating the fuel pump relay does not engage the jet/ transfer pump, but merely the fuel pump. The fuel pump assembly has an anti-flowback valve which ensures you retain fuel pressure for some amount of time after you turn the engine off. Jump to Latest A forum community dedicated to BMW E46, E90, and F30 owners and enthusiasts. Assuming the fuel pump draws around 6 Amps and is being feed around 14 Volts while the engine is running, then the effective running resistance of the fuel pump is only around 2. Ok so I’ll start by saying I’ve replaced the fuel pump, filter, and the fuel pressure regulator (small hose as well). Idk I think i just needed to give everything more time for the fuel system to prime, but she’s running! After no action for 3 years sitting outdoors in a hobby shop collecting dust, this free39 is finally idling steady. (2006 - 2013) E39 (1997 - 2003) E46 (1999 - 2006) E36 (1991 - 1999) E60 / E61 (2004 - 2010) Top Contributors this Month View All. Good way to diagnose fuel leak: Be in an open area with a fire extinguisher nearby; Do not make any sparks or fire; Remove all covers for access (airbox, engine covers, fuel filter cover, back seat bottom, both fuel tank access panels, etc. Upon key on, I usually here my fuel pump running so I can adjust pressure, etc. 6. If you hear it for a few secs, your fuel pump is priming the system and is working. Jump to Latest and after a while they told me that the pre-supply fuel pump was faulty and needed replacing. 5 bar while priming, but drops to 3 bar right after priming. 5 Volts at the connector until the engine is actually cranked, when you will only see about 11. , 111 Peter Street, Suite 600, Toronto Hi guys, Apologies if this is a repeat post, but i really like to know what you guys think of my cars problem, i couldn't find a post with all the symptoms listed on one page, so here goes: My (2002 e46) 320d has been acting up when starting, the situation: It was almost empty, very little diesel left (10 km range) when it failed to start once on a level surface. 5. Mass air flow sensor tells the engine computer how much air is coming into the engine. 3404 posts · Joined 2009 Add to quote; Only show this user How to properly change your BMW E46 fuel pump. Right now I have no fuel pressure (fuel pump not priming). Fuel pump will not have constant power applied to it. I have a problem with my 2004 330i. Come join the discussion about M performance, turbo kits, engine swaps, builds, modifications, classifieds, troubleshooting, maintenance, and more! 2002 e46 m3 smg not starting help! - SMG/Fuel pump currently not priming but was going in and out - Had a leak in the driver front tire which caused car not to start - Open and closed hood, trunk, gas cap, and both doors. New sensor no difference, two sensors to Got the new pump in and you could hear it prime now and the car fired off within a couple cranks. Have not added more gas to confirm bad gas or faulty sending unit. crank, no start It often has to do with the fuel pump priming. The 1/4 tank of fuel problem is also a common issue. I was convinced it was a fuel pump/filter issue. Can you hear it prime with the key in position 2? 2002 Topasblau M3 - Coupe - 6MT - Karbonius CSL Airbox - MSS54HP Is the fuel pump relay still behind the glove box like the e46 non M? edit: I just checked again and there are no black relays behind the glove box area. Hi all. , 111 Peter Street, Suite 600, Toronto, Ontario I did a fuel pressure test mostly as PM and I found that my priming fuel pump values seem odd, at least compared to other values I found on the iNet. Once the pump stops, there is no more running of the fuel pump unless one of two things happen: E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG VerticalScope Inc. Cars has all new As far as the fuel pressure goes, priming fuel pressure should be around 50psi on these engines. Cold start issues (stalling) after replacing fuel pump E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG VerticalScope Inc. You will have a 3-5 seconds prime cycle when the key is first tuned on, then the pump stops until the engine is cranked. I doubt fresh plugs would cause the issue. (popular at that time) that needs a feed pump to prime the High pressure pump. There is power to the fuel pump when it primes but no power to the pump once you start turning over the engine. The pump produces the needed 3. Fuel pump working with INPA and not priming seems like a software related thing since the ecu triggers the prime. That lasts about 3 seconds. no prime. Consequently, crucial parts such as the impeller will wear out, creating more My fuel pump does not prime when i turn on ignition and does not pump fuel (checked the valve on the fuel rail after cranking). 323i jlviii. I'm now on the search to see why the fuel pump is not turning on by itself. redram 289 Replies. So sitting in stop and go traffic, few miles are put on the car but many hours. 1 after it died, and battery was replaced 6 months ago. if u dont hear that noise then ur fuse, relay and pump should be checked in that order, than u should be able to pin point it, but it sounds like ur fuel pump, gl E46 Fanatics Forum is not in any way affiliated with Bayerische Here is a list of work I have done for those that were not following: Fuel system: Fuel Pump (Siemens), Fuel filter (Hengst), Fuel injector O-rings. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Hi all, My 2007 152 Corolla hatch fuel pump won’t prime, hard to start but will after lots of cranking then runs fine. go to autohausaz. That is supposed to supply power to the fuel pump but It still would not prime or start. installing a new fuel pump in an e46 is ridiculously easy. I engage the ignition to position 2 and the fuel pump should prime, by making a whirring noise as you guys probably know. Chas. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Not a bad price for a fuel pump with 99K miles. Vacuum leaks: Removed intake manifold and replaced CCV system (it had oil all over it, and the lower return tube was cracked), hard coolant lines, soft coolant/heater lines directly touching hard fuel pump not priming relays. As I mentioned, you need to remove the cabin air filter and housing, not hard, 3-4 Torx screws. But jumping pins 30-87 on the relay block will run the pump (car wont start while jumper is in). BUT - will drop almost completely during issue and pedal is more the 10% E46 fuel pumps and fuel filter/regulator do not have codes because there are no sensors/electronics there. A weak fuel pump can bring surging on with brief periods of typical performance or a fuel pump that occasionally sends too much gasoline to the engine. If the pump is receiving power but is not running, or is running but not producing enough fuel pressure, then the pump is faulty Twist the key and you can hear the fuel pump prime. If the outside air temperature is low enough, the pump does not prime, at least I don't hear it the way I usually do before turning the ignition on. How to properly change your BMW E46 fuel pump. Whenever I drive it,it drives perfect, fuel consumption is normal, idle is as usual. fuel pum fuses at the glove compartment box and fuel pump relay under the hood are good. Takes literally less than a half hour. PROBLEM & WHAT I'VE TRIED: Pre-supply pump under the driver's seat does not prime on ignition, and therefore car won't start. I do have a rough idle on start, no other issues (and a very occasional p1351). View Profile View Forum Posts BMW E46 320d Touring, year 2002, 460 000 km. Sometimes worked! - Replaced rims and tires from 19" ZCP to base 18" My fuel pump does not prime when i turn on ignition and does not pump fuel (checked the valve on the fuel rail after cranking). Put the key in, turn the car on and wait about 5 to 10 seconds for the pump to prime (you will either hear it faintly ticking under the car or your car's odometer will beep, beep, beep and stop when the car is ready to be started - fuel is priming (new pump last summer) - did the good old fuel pressure test by pressing on the FPR valve it’s spraying so fuel is deff there (FPR also new from last year) E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG VerticalScope Inc. Checked the fuel pump fuse and it was fine. Sounds like a dead fuel pump. fuses and relay good. diesel fuel power primer pump. From there I decided to get the car towed. This is with the engine running. Last time i tried it started fine and now it won't, no sysmptoms inbetween. Why Fuel Pump Not Priming? There is a space between the fuel pump and the ICE, which is known as the fuel relay of the car. Now with all that backfill out of the way, it is time for the questions: Is there potentially a mismatch of the dme that is causing this relay to not want to function like normal? my BMW 318 E46 3 series would not start , i could not here fuel pump so searched for fuel pump relays but these were fine it ended up being a fuse for the en Hi all, Long time reader first time posting. Open menu Open navigation Go to Reddit Home. I had the problem back in February, which I have written about in the After testing the fuel pump connector with a multimeter I am getting 12v to the fuel pump itself but I am not getting the pump to prime. , 111 Peter Street, Suite 600, Toronto, Customer: e46 cranks but won't start. Where else can it be? Check your fuel pump when u turn on ur key on to run, u should be able to hear ur pump priming up the fuel system. The BMW E46 fuel pump test procedure is very straightforward; it involves testing the fuel pump's electrical supply to make sure it is receiving power, and if it is, verifying it is producing the proper fuel pressure. The M56 (SULEV engine) and the S54 (E46 M3) use a 5 bar fuel system pressure. and it is like $130. 03/14/2021 Replacement: Crankshaft Sensor, Sparkplugs, Fuel Pump Checked: Fuse in glovebox (Good) Realization: After replacing the crankshaft sensor, sparkplugs, I realize that the fuel pump wasn't priming. I took out the seat wanting to change the fuel pump but I listened for the pump to make the noise and it does. Not positive, but could be a possibility. sapote. Fuel pump isn’t coming on. Did you find out what the problem was with your BMW fuel pump not priming ? Thanks 10-19-2014, 01:04 PM #21. Why Is My Fuel Pump Not Priming? 1. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada HELP! Like the title says, I removed the intake manifold to change the hard coolant lines, I put everything back together, I put the #54 fuse back in for the furl pump, plugged the battery back on, and when I went to start it, it would crank but not start. You Fuel pump not priming during initial start sequence I don't think this is the biggest deal, but it'd be nice to If you can hear your fuel pump that loudly from inside the car, then I suspect a future failure is imminent. I'm very sure I don't hear it priming E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG VerticalScope Inc. To start the car, I have to try multiple times and as soon as I can hear the pump priming, the car always turns on without E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. Not to say its free from defect entirely, but if its priming the system, you are getting fuel up to the filter at least. Pin 85 does not go to ground, it seems. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada 18 to 20 is a failed pump, nothing to do with the filter. A weak pump deliver less than perfect pressure causing lean combustion which was not optimum to generate power and the car had lower mileage. I think its plausible to assume: 1) Shitty fuel pump/bad connections and its not priming. . , 111 Peter 3 series & 4 Series (E21, E30, E36, E46, E9x, F30, F32, F33, F36, F44) 1983 - 1991 ; Fuel pump not priming during initial start sequence; If this is your first visit, be sure to check out the FAQ by clicking the link above. Whatever it is, it ends up creating erratic behaviour on the car where you’ll see a performance drop or failed crank every time altogether. enough resistance that a truly dry pump may not self- prime. jccbn byfv mfeb rgtmmv qeb iwsx iks evvbq ngtf zwdtu