Passat (B5) :: 2004 - Fuel Nozzle No Longer Cuts Off Automatically After Changing Fuel Pump
I worked with my buddy troubleshoot and remove a faulty fuel pump. He received it a week or so later and did the install himself. After this, he states that while pumping gas at the gas station the nozzle no longer cuts off automatically when full causing overflow. He says this has happened at different stations and different pumps. I told him to go double check connections and that everything was sealed. I am wondering what could be causing it..
2004 Passat v6 wagon auto
Sonata NF (2006-10) :: Code P0456 - Cracked Fuel Pump Housing
I have a 2006 Sonata with 88,000 miles on it. Currently, and for the past 11 months, the CEL has been on and the code always returned is a p0456, very small evap leak.
I searched for leaks but couldn't find any. I also replaced the purge control valve, but the same p0456 continues to reappear. Of course I also made sure the gas cap was on tight.
I received a coupon from the dealer for a free diagnostic so I took the car in.
The dealer reported the code as p0455, large evap leak, and said the cause was a cracked fuel pump housing. Cost to repair $850. Seems to me the dealer just picked the most costly part to replace, although I can confirm they looked at it because they forgot to screw the access cover back on.
So what I would like to know is how the dealer would have made such a diagnosis? I cleaned and inspected the outside of the pump and saw no crack, but I also understand that the crack may be too small see.
I want to be able to confirm that the dealer's diagnosis is correct, but how can I do that? I have a hand operated vacuum pump and access to shop air to aid in the diagnosis.
I read elsewhere on this site about pressurizing the system and putting soapy water on the area to show bubbles where the leak is, but where would I connect the air hose? And more importantly, what is a safe pressure to use?
Of course tracking down the cause of p0456. I know the charcoal canister could be problem as well, but I'd like to find some way of isolating down the failing component.
Lexus LS 2007+ :: CEL Code P1235 - High Pressure Fuel Pump Out Of Range
I have 2008 LS460 done 30,000 miles since last few days. I have CEL and when i hooked it to a reader the code came out P1235 "High pressure fuel pump out of range" any one had this problem before!
View 3 RepliesAccent MC (2006-11) :: 2007 - Code P0343 / Car Not Starting Cannot Hear Fuel Pump
It was acting rough and was a little loud. Like a low deep loud, the engine light came on. I tried to start it, it would crank but no start.
Code came up P0340 (Cam sensor) So i replaced it, reseted and scanned again, now it says P0343 To much input sensor 1 bank 1. When i turn the key over to "ON" I don't hear the fuel pump, is this normal?
I don't understand what to do I am so lost, I am ready to do the timing. Is there something cutting my fuel pump out or is it done? Do i do the timing, or replace the pump ...
Passat (B6) :: Fuel Pump Failure?
I am curious as to what are signs that a fuel pump is about to fail?
View 11 RepliesFord F-150 (2004-2008) :: Code P1237 - Fuel Pump Secondary Circuit Failure
ok i was just driving my 2004 ford f150 truck and it stopped running. I turned the key and it started back up again and then while on idle it stopped again. I took it too auto zone and it showed a code of p1237 which as far as i can see says fuel pump secondary circuit failure. does that mean i need a new fuel pump and how hard is it to replace.
View 1 RepliesPassat (B6) :: Changing Fuel Pump Module?
How difficult is it to change the fuel pump module?
View 4 RepliesPassat (B5) :: Car Quit On The Road, Bad Fuel Pump Diagnosed
The car quit on the road and I diagnosed a bad fuel pump. Multiple tests confirmed the pump had failed. While we were doing the diagnosis, I noticed some strange behavior when monitoring voltage to the pump. While supply voltage was present during cranking, none was applied to the pump when the key was first turned to accessory. I decided to chase one thing at a time and replaced the pump (and fuel filter, since it had been too long since last replacement and I wanted to "cover all bases").
After pump replacement, I opened the coupling in the supply line before the fuel rail to confirm proper operation. When the key was initially turned to accessory (multiple times to prime everything), there was NO fuel flow. When we then cranked it, fuel was present very quickly. After reconnecting the line, a couple of rounds of cranking got the fuel pressure up and the car started and ran perfectly. A quick VAG-COM check showed no codes. I test drove it and then shut it down. Immediately after shut down, I switched the key to accessory and the fuel pump started right up. After doing this 4-5 times with a few minutes pause in between, I pronounced the car "good" and finished up.
This morning, I jumped in, turned the key to accessory and heard......nothing. No fuel pump running for the normal 2-3 seconds. I cranked it and it took two rounds of 4-5 sec cranks for it to fire and run (normally). I assumed it needed time to build fuel pressure. I then drove it for 20 minutes, parked it for 45 minutes and when I restarted it, it took a longer than normal crank period (maybe 3 seconds) to fire and I did NOT hear the pump run in accessory position. The rest of the day was with short stops and I could always hear the pump start in accessory and the car always fired up instantly. I have the Bentley CD and analyzed the wiring harness. It looks like the fuel pump relay is only commanded to operate by the ECU - there is no external input to the relay coil I can see (ground or B+).
The bottom line is that SOMETIMES the pump is commanded to run in ignition switch accessory position and sometimes it isn't. The "isn't" always seems to be after the car has sat for a while. Is there any combination of failed sensors that would cause the ECU to NOT command the pump to run for it's few seconds in accessory position ? Obviously, the next step is the FP relay but I hate to just throw parts at the car without some sort of troubleshooting and the repeatability of the problem with sitting time leads me to believe it may be more of a relay DRIVE problem then the relay itself.
Passat (B5) :: Fuel Pump Has No Sound While Cranking, Car Won't Start
98 Passat 1.8T FWD
Car will not start. No sound from fuel pump while cranking. Pulled up the carpets and pulled the cover and connector from the fuel pump. Ive heard the relay is the common problem. I tried checking the voltages on the harness and we get 0 while cranking. Pulled the relay and we get a resistance from T pin to pin 86. I did notice a yellow color on the white connector on the fuel pump itself around the middle two contacts.
Passat (B5) :: 2004 GLX V6 - Humming Noise From Fuel Pump
I have a 06 passat v6 with 34,5000 miles and with extended warranty,the car consumes about 14 mpg city and I noticed a humming noise coming from the back seat or bellow the trunk I am positive is the fuel pump, I will like to know if my poor mileage is related to the humming noise or should I take it to the dealer to have replace under warranty...
View 2 RepliesPassat (B7) :: Connector On HP Fuel Pump Regulator Broke Off
Hit a bump in the road, car hiccuped then EPC and MIL illuminated. Scanned it with Carista and showed low fuel pressure. Looked under engine cover... Lo and behold! Connector is plugged in but male portion on regulator is snapped off!!! Needs whole fuel pump assembly at 25,000 miles!
View 3 RepliesPassat (B5) :: Lost Of Mileage After Fuel Pump Replacement
I changed my fuel pump cause it died and now my mileage is about 100 less per tank? What could it be.
View 2 RepliesPassat (B5) :: Marker Light Comes On When Fuel Pump Is Running
More electrical gremlins. The car is a 2000 1.8t, it has had some running issues since I got it a few weeks ago. I replaced the ECM (had water damage), fuel pump relay and battery and it was running fine all week, my wife went to start it after work and it died when she took the e-brake off. I went to her work to get her and noticed the rear marker light was on when the car was running. Got the car home and now it wont run for more than about a minute and the light comes in when the fuel pump is running, turn the key but don't start the car and the pump and light come on for a second and go out. Start the car and the light stays in until the car dies.
Is there anywhere in the system these two circuits are connected? Do they share a load relay anywhere?
Passat (B5) :: 2003 - Fuel Pump Quit / Failure
So at 55,200 miles, the fuel pump on my 2003 decides to quit today. I never got a Recall Letter and when I called VWoA in the past about it they said that my car was not one of those affected, even though it was within the years affected. So what do I do now?
View 6 RepliesTrans Sport :: 1992 Pontiac 3.1L V6 TBI Engine Refused To Start / Fuel Pump Relay Error Code
We have a '92 Pontiac Trans Sport with a 3.1L V6 TBI engine. Last Sunday evening it refused to start like someone left the transmission in Drive and the Park/Neutral switch was preventing it to start. There's the buzz sound from the fuel pump when you put the key on then nothing when you turn it to start the engine.
I checked the Park/Neutral swith by connecting an ALDL cable to the OBD port and it indicates correctly when I move the lever to Drive or Parking/Neutral. The only error code stored is "Fuel Pump Relay" but the Fuel Pump appear to be working?!
Battery is good, fuel pump fuse intact and the Park/Neutral switch appear to be working. How we can tackle this problem?
Passat (B6) :: Loss Of Power - High Pressure Fuel Pump Went Out
My wife was driving our 08 B6 yesterday and suddenly had a loss of power. Check engine light was on. Took it to the dealer and we heard back today that the high pressure fuel pump had gone out. I had heard of the TDI's having this problem and I know BMW had to do a recall on the same issue. I didn't know that the 2.0 TSI had this problem.
I'm a little bit concerned 'cause we leased the car for 3 years and didn't have a single problem. I thought it was very solid so we decided to buy the car last month Now my confidence in the car is a little bit rattled.
The car is under warranty. I just hope that this is not the kind of thing that's going to go out every 20K miles! Out of warranty, this repair would have been costly.
Passat (B5) :: 2003 - Will Start But Turns Off Right Away - Computer Or Fuel Pump?
My 2003 Passat 1.8t starts up but turns off 1-2 secs later. And if it is the fuel pump, where is it on my car?
View 4 RepliesPassat (B5) :: 2004 Wagon 1.8T - No Power To Fuel Pump When Opening Door
Ok, wifey went to pull out of garage the other day (Tues.) and after putting car in gear, boom it went dead. She started it again and after 2 seconds of sputtering boom dead again. Tried it when I got home and spun over fine, but no fire. screamed fuel pump to me, but I did all the little things first, Fuses #7 and #26 or 28 or something like that, both were good. So I proceeded to check voltage at the pump (It is NOT under the back seat as alot of people told me..) it is under the passengers side mat in the back.
I checked the voltages when my wife was cranking the engine and it was 12.5 volts. When the key is just "on" the volts were 3.5... I went ahead and pulled the pump, not hard - just I had never done it / pumped 12 gallons of gas out.... Tested the pump connected straight to a battery with jumpers (6'+), and nada the pump didn't do any thing. reversed the polarity and it clicked, reversed it again and clicked again, after the 4th time it went to buzzing. I put it back in and nada.
Pump would work sometimes when it was laying on its side. Good enough for me, new pump ordered. New pump installed and cranked it over, nada. Cranked it over again and sputter sputter - vrooooom! Yea! fixed. Well sorta... Read on. Car started up immediately after shutting it off when testing - turned car over to wifey (after flushing brakes and replacing front pads with those niffty green ones...)
OK here is the point to this diatribe: Car's fuel pump isn't firing with the switch "on". it is pumping when the key is switched to "start", and it runs when the car is started. So you have to crank the engine to "prime" the fuel rail. The second time you crank it, it fires right up. Car accelerates well after started but the double cranking cannot be good on the engine's starter. The fuel drain happens sometime after the car has sat for 15+ minutes. If you shut the car off, then wait up to 15 minutes (all I have had time to sit still and check) the car will fire right off. I just don't know what to check now. Could the relay be bad?
I do not hear any humming from the back when the door is opened. What triggers the pump when the door is opened the CCM? It didn't do this before the car quit, always started with a second or two of cranking...
Passat (B7) :: Whistle Chirpy Noise From The Front - Fuel Pump Resonates
I just traded in my base 2dr 2013 golf 5spd, for a 2013 Passat 2.5 auto. (crazy good deals on right now in Canada! only 45 bucks a month more )
Any way, I have two noises that probably should not be there,,, one is a whistle chirpy noise from the front sounds like a bird trying to get internet dialup...thinking secondary air pump, however..does change pitch when turning wheels.... and dies down a little when warmed up... but liveable for now..
Fuel pump, it resonates in your head!! It must be stopped... Is this common for all B7 Passats? High pitched annoyance just kills that new car feeling... I am only at 600 kilometers. its only heard when the radio is off but still slightly heard while driving.
I read filling the tank up with gas might work....but no not even a little. I'm thinking a trip to the dealer to replace the pump... if that doesn't work will dynamat solve the problem?