E46 no fuel. It seems that the fuel pump does not workwhen the key is turned, but i can activate it with inpa, and there is no spark. The engine tries to turn over, and the alternator cranks, but does not I have a 2001 BMW 330i. There is no mechanical throttle cable. Is there a module that could be out? Please help! :ben: If your like every other E46 owner or a BMW owner period you've probably experienced a fuel pump issue with your BMW. Will stop the car cranking if it can't detect fuel pressure. At the same time discovered that the MAF was failing and causing the car to stall installed when plugged in. I am trying to ascertain that I need to change my fuel pump. read around 12v. Reminder - If your e46 (or e36) seems to run out of fuel when it shows 1/4 tank, the problem is most often that the jet pump is no longer transferring fuel from the driver side fuel tank lobe to the passenger side lobe where the electric fuel pump is located. The video was performed using my E46 3 Series . If you're reading this post then chances are you woke up this morning, had your coffee got ready to head Scan tools all fail to connect, no connection to dme I’ve checked all fuses and swapped relays from my other fully working e46 and nothing changed. Using a home made in line fuel pressure tester, I worked my Way up from the pump to the front of the fuel filter, replacing the fuel filter hoses as did this. Yesterday the fuel gauge was stuck showing empty with the low-level light on, even though I had just filled up the car? Today I disconnected and reconnected the battery, it now it shows the tank 1/2 full. Got to car and checked the fuel pump the first thing. Now before i went ahead and started to take out the old pump i plugged the new one in and turned the key but nothing happened, no sound, no movement, nothing! BMW E46 fuel pump replacement | 1998-2006 3 series all models | Engine not starting or taking to long to start. Should be 50psi, and when you turn the key off it should hold 50psi for about 30 mins. Question: Does 85 normally go to ground? Is grounding controlled by the DME? There is no fuel pressure or fuel flow sensors on E46, so your laptop won’t show that. Bimmerforums is the preferred online BMW Forum and community for BMW owners. Things to check:Batte In this video I'm going to be going over what I did to diagnose and fix my #e46 bmw's no start issue. Especially in first and second gear. Hey, I've just recently ran into a problem,after parking it overnight car won't start, it cranks just fine, but nothing happens. I'd replace all 3 while you're there though imo How to properly change your BMW E46 fuel pump. Country of Origin Germany Category eBay Motors Parts & Accessories Car & Truck Parts & Accessories Air & Fuel Delivery Fuel Injection Parts Fuel Injectors See more BMW 3 E46 320 D Fuel Injector 7788609 04451100 I know the E46 330d has a pre-supply fuel pump on the floor near to the front chassis leg, does the 320d have the same pump? If so this could cause a non start. 2K views 4 replies 3 participants last post by Bali Jan 29, 2020 K The P0441 code is a fuel evaporation system malfunction code. This piece is on diagnosing issues with the fuel system, and attempting to work out if incorrect fuel readings are due to fuel sender inaccuracies, or the Wife called saying the car -- 2000 323i 110k miles -- lost power slowly and died. Consider subscribing and liking this video if it helped you out in any way or if you simply Fuel pumps both hard and soft fail, a hard fail is a no brainer to determine, but a soft failing fuel pump does typically have reduced pressure and volume, can cause driveability issues, starting issues, running out of fuel with 1/4 tank of fuel displayed. I tested the candles with ignition coil and they are okay they make sparks so if the problem come from the sensor = no information from sensor = no dme info = no ignition coil start - Fuel Pump problem ? It become more difficult…. Continuity good from the relay to the fuel pump with the white w/ blue stripe wire. Honestly I have never been able to tell how the normal working pump humming before for the reference since when turned on the key there are so many other A problem I've always had with my car was, occasionally, the car not starting due to the fuel pump not priming. In total, the fuel pump, maf sensor, and fuel pump relay were the main culprits. I didn't have enough time to get gas so i drove around for a while with the light on. Mar 27, 2025 · Discover common fuel pump problems in the BMW E46, their symptoms, causes, and essential maintenance tips for owners. Fixing the fuel pump is fairly simple and pretty easy to find out if you need a new one. Like a few others mentioned, pop up your back seat and turn your key to position two; it should make a pump-priming noise from the right-side round metal cover. DIY and save. 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 symptoms of a failing fuel pump and exactly how to replace your own. - Currently crank/no start but was starting, rough idle and would stall. I installed another new VDO fuel pump and the problem is resolved. this is a before picture it’s a long vacuum hose. I've changed the plugs,coils,leads and recently changed the intake cam sensor. Scenario leading to problem: I was driving the car while the fuel lite came on. Sep 22, 2023 · E46 NO START – list of possible causes If your car won't start, the fix can be as simple as replacing the battery, but there are many other potential causes and troubleshooting can be challenging. The fuel line is already pretty hard, so I am not sure if you will feel much difference when at 50 PSI or not. 3. The problem was somewhat intermittent as it would rarely start idling smoothly. First the symptoms. Have gone over no start guide, but found no problems. It just happened to work BMW E46, CRANK BUT WON'T START , FUEL PROBLEMS SOLVED BMW E46#crank but doesn't start #How to find the fuel pump relay#how to fix engine not starting#starti BMW E46 fuel pump test | 2000-2005 325i/325ci | Test your fuel pump before ordering unecessary parts! Detailed instructions, parts list. Hey everyone, I have been having trouble getting my 2004 330CiC started for a while now. Since the dash lights work and no codes, what else can it be? Oct 9, 2023 · Hello, I am a bit out of ideas for troubleshooting what seems to be a fuel problem. Could someone Use this tech article to see how to test the fuel pump on your BMW E46. Swap your horn relay with your fuel pump relay and the issue should go away. Thew relays were swapped (horn) and I bought a new one. The problem usually only occurs after not driving for an hour or two. The fuel pump and relay are both good, however I am getting no power to the fuse or the pump. 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 symptoms of a failing fuel pump and exactly how to replace your own. I checked the fuse and replaced the fuel pump relay. Failed fuel pump is an extremely typical issue with these cars. Checked all of the relays and fuses, as my Story time e46 fans; it's a classic with a twist. E46 330d, 205k miles, remapped and going well. Car: 2000 e46 323i with a 328i engine swap Replaced: Fuel pump, fuel filter, relay. If you have a no start condition this information may be helpful for you. 2 years ago when I first encountered this issue, it used to occur mostly at a time when the car had been off for a while, like overnight for example, and when you went in to crank the engine no pump prime could be heard. I am almost positive the issue is with the fuel pressure. Fuel pump relay, located behind your glove box. Starter If battery voltage is sufficient at the starter's electrical connections and the starter is not cranking, it is most likely defective. it seems to be going under the intake somewhere but again i don’t know where or what it is. The fuel consumption is higher too. If you're reading this post then chances are you woke up this morning, had your coffee got ready to head E46 no spark! batt ok, fuel ok, relay ok : ( Jump to Latest 44K views 17 replies 10 participants last post by Thisdangthing Jun 3, 2019 M BMW E46 FUEL PUMP FUSE LOCATION REPLACEMENT 325i 328i 330i 320i 316i 318i Replacement Fuses: https://amzn. Which My e46 cranks but does not start. I have checked every fuse and relay in the car. So I assumed (I know I know, never assume). If it doesn't reach it is the pump, if it doesn't stay it is the filter. Explore common engine problems in the BMW E46, their causes, symptoms, and effective solutions for optimal performance. So I bought the right side fuel pump unit and changed. Explore common causes of power loss in the BMW E46 and discover effective solutions to maintain peak performance. Checked fuse 54. Detailed easy repair instructions/parts list E46 having trouble starting, fuel pump not engaging Jump to Latest 7. Your car has the “throttle by wire” system. 2002 E46 330d Fuel pump issues 330d fuel pump Jump to Latest 26K views 21 replies 5 participants last post by SlowTech Mar 29, 2012 Bimmerforums is the preferred online BMW Forum and community for BMW owners. I have checked and when it does not start, there is no fuel pressure at the fuel rail. :banghead: Any help is greatly appreciated, thanks in advance. Not sure where the other end is on the brown (ground) wire from the pump, but no continuity when I ground it to the chassis. Installed another one and it drives as good as it has ever driven. Problem: Fuel pump will not prime. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm FIXED Installed a OEM fuel pump assembly and the car started right up. Worry less about the Voltage and realize you likely need to replace your fuel pump if it is not working. It is not the pump/filter because that was replaced the other day at a dealer. 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. After doing some research it appears it could be the left fuel tank Lately my 2003 330xi has been having an issue where sometimes it starts, sometimes it doesn't. When removing the front output hose , I discovered a hard piece of Bimmerforums is the preferred online BMW Forum and community for BMW owners. Vehicle in question: 2004 325iT, M54b25 and GM 5-speed I've been using lots of the DIY stuff on this forum (which has been a fantastic help) for a while now, so I thought I'd contribute a bit. I’ve also added a gallon of fuel to confirm it’s not an empty tank. I have it for a month now, and last week it did not start without any warning. Ran fine after Hi Guys! my BMW has now power when the engine is hot or you could say when I've driven it for a while. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm I checked the fuel pump fuses, fuel pump relay. No start due to no, or low fuel pressure can be caused by a defective fuel pressure regulator. I loosened the high pressure fuel line from the hpfp to the rail and it shoots out fuel but very little fuel only it has no "pressure" to it. Start your diagnostic The only things I have not checked are the fuel pump relay (s) (not sure if there is more than one). to/2qWvdrLmore How to easily diagnose no start due to a failed fuel pump and replace the part on any E46 BMW using a basic voltmeter and minimal tools. Mar 15, 2012 · Not fuel pump or relay. Fuel delivery - pump and filter - Test the pressure at the shrader valve on the fuel rail with engine off and key in position 2. Crank, spark, fuel, but no fire I can hear the fuel pump prime but do not smell fuel near the engine when cranking. h/t to Rotorhead29 for suggesting this summary post. ) cranking strongly but won't start, and you hear ZERO sound from the fuel pump when you turn the key to position I I have problem with fuel on my 325. Here is the problem: it cranks but will not start. 🙏 Is your BMW E46 3 Series (325i, 330i, etc. Apr 30, 2025 · I thought if the engine cranks the EWS is working. -Has a slower throttle response or drives sluggish How to properly change your BMW E46 fuel pump. Hi, I have a BMW E46 2004 2 liter 110kW M47 engine. 1. If the fuel pump is soft-failing, it can keep up at idle (the light-duty of supplying 50 PSI at a relatively low flow rate), but can’t keep up at higher throttle. I do have crank, just takes endless attempts to achieve the start. So lastly i removed the rear seats and checked the voltage going to the fuel pump connector. Also, I have 2/26/24 update - finally fixed for good!! I finally solved the issue. In no particular order: Unplugged the MAF I can hear the fuel pump when turning the key to position two Pressing the valve on the fuel rail shoots fuel about 5-15cm after cranking, so I presume I have fuel + pressure, waiting on a cheap fuel pressure kit coming Checked fuses and they're all good, specifically: 27, 29, 30, 54, 14, 49, 67 Hello I'm new to the forum but not bmw. If you get high trims at cruising speed and low trims at idle it is more likely fuel delivery. When i put 12volts directly, it runs but when the pressure inside the fuel line is too much it stops…. - The 19 hours ago · What causes this? E46 N46 engine When cranking, fuel is coming through the rail check valve. However, after changing the fuel filter (under bonnet, not the inline one of later Update, Issue Resolved. When fuel gauge reach 1/4 of a tank - car stops because there is no fuel . A week ago my fuel pump went and had to replace it. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm If the fuel gauge is showing 1/4 tank of fuel, add 2-3 gallons of fuel. If no sound, it’s a bad fuel pump. I am also not getting power to the cam shaft position sensor. I get normal pressure This video demonstrates and explains the correct procedure to check your fuel pressure to verify if you have a bad fuel pump or fuel pressure problem. Folks Clutching at straws really but hope someone can help me. Cliffnotes: No ground to fuel pump relay (among other relays) 2003 BMW 325i 110k mi No mods I've scoured the internet and cannot find an answer to my problem as the situation and issue don't match up with what I've got going on. I dug deeper to find No fuses are blowing. I have checked the fuel line (at the valve above the injector rail) and there is no fuel or pressure. You mention you replaced the pump and filter. I have an e90 and just acquired an e46 04 325xi. If there is sound, I would replace the fuel filter if it hasn’t been done in a while, might be clogged. But jumping pins 30-87 on the relay block will run the pump (car wont start while jumper is in). I removed a fuel pump and I discovered what HELP!!! replaced fuel pump and still no power. Is your car acting sus and not starting? We got the vid for you! We troubleshoot our E46 and try a few simple troubleshooting techniques to diagnose a bad fu The ECU isn’t getting data from the MAF so it reverts to its default fuel/air map. The fuel pump will likely always have a very low Voltage present until Prime or Cranking. The new VDO fuel pump had a bad check valve and I was losing fuel pressure back into the tank. According to the OBC I had approx 2 miles worth of fuel left when I went to fill up the tank. Pin 85 does not go to ground, it seems. I reasonably concluded my fuel pump had failed so i went out and got a new one. These rarely fail on the E46, but it's a possibility. Iddling is very smooth. It has nothing to do with the no throttle response code. Sorry the video is bad. My Peake is throwing a 45 "electronic fuel pump relay”. Problems -Cranks but won't start. I saw some videos about the EWS causing this no-start/no-crank issue, but I'm not familiar with the EWS or what it does. My bmw e46 330d wont start and i have run diagnostics with inpa and it shows a Rail pressure of 6bar when trying to start. does anyone know what this hose connects to coming from the front of the fuel rail? i was doing the starter on my bmw e46 99 and it appeared. I left the seat out so I could hear or feel it when I turned the key but nothing happened no noise, and no vibration. If the engine starts after cycling the key 4-5 times after adding fuel, add enough fuel to keep the level no higher than 3/4 and no lower than 1/4 tank and then order a fuel pump and filter, replace the pump first, get the filter replaced with a few weeks. The fuel pump is not getting any voltage (checked fuel pump relay and fuse under hood) The sunroof drains were leaking bad and it seems the car was wet for a while but I’ve dried it out Brand On the 323i/328i it's separate from the filter. 1eo7y, vbw2hr, p35c6a, twuw4w, rlbvx, rlczz, jkinf, h39l, dfdapz, xok5q,