Username or Email Address
Do you already have an account?
Forgot your password?
  • Log in or Sign up

    VWVortex


    Page 1 of 2 12 LastLast
    Results 1 to 25 of 43

    Thread: Fuel pump going bad?

    1. Member brandonrosensteel's Avatar
      Join Date
      Nov 12th, 2007
      Location
      Fayettenam PA
      Posts
      2,444
      Vehicles
      1991 VR Coupe
      02-03-2008 02:48 PM #1
      How can I tell if the fuel pump is going bad?
      I was driving home last night and the car started to jerk every once in a while.
      Not really jerk like bucking, but almost as if the clutch had slipped.
      It made me sorta nervous so as I headed back home, I turned onto a road right by my house and ran it pretty hard in second gear.
      It was fine right until it hit 3000 rpm and then it did it again.
      So I slowed down and made the next corner, and did it again, 2nd gear, and again at 3000 it cut out for a short second...
      Could this be the fuel pump?
      Anyone ever have this problem before?

    2. 02-03-2008 03:21 PM #2
      When you're car is running, how loud is the under car fuel pump? Does it buzz loudly?

    3. 02-03-2008 03:34 PM #3
      unless u hear a really high pitched noise comin from the back of the car,...probly not... its only doing it ramdomly..around 3000...i duno..check the hose from the airbox to the intake see if its tight, and check ur distrubitor cap see if thats in the right spot and tight, and unplug the maf and other sensors and clean the prongs on them...im not really sure what would do what ur talking about...

    4. 02-03-2008 03:37 PM #4
      Quote, originally posted by st.germain »
      unless u hear a really high pitched noise comin from the back of the car,...probly not... its only doing it ramdomly..around 3000...i duno..check the hose from the airbox to the intake see if its tight, and check ur distrubitor cap see if thats in the right spot and tight, and unplug the maf and other sensors and clean the prongs on them...im not really sure what would do what ur talking about...

      I had a fuel pump go out on me with the same symptoms he's having. Reason I asked if the fuel pump was noisy. When mine started to go out, the pump sounded like a ball bearing or something in the pump was loose. Also, at certain RPM's, the engine would buck pretty bad.

    5. Member brandonrosensteel's Avatar
      Join Date
      Nov 12th, 2007
      Location
      Fayettenam PA
      Posts
      2,444
      Vehicles
      1991 VR Coupe
      02-03-2008 03:39 PM #5
      Yeah, its really awkward and it makes me nervous because I dont want to go out driving now to diagnose the problem in case something happens and I would have to tow it home.
      And no, no buzzing that I can hear.
      At least not over my rattling, plugged up catalytic converter, haha.
      Anyone else?

    6. 02-03-2008 03:54 PM #6
      well mine was doing what urs is... cut out at 3 and 4500 rpm, then it kept gettin worse....it was the ecu not the fuel pump.

    7. Geriatric Member VegasJetta's Avatar
      Join Date
      Jan 26th, 2003
      Location
      SoPo, Maine
      Posts
      39,346
      Vehicles
      01 XJ 4.0, 81 CJ7, 99 Forester Syncro, 87 Honda TRX250, 82 Honda UrbEx, 85 Honda ATC70
      02-03-2008 05:27 PM #7
      Sounds like what my car did last week, I was low on fuel and made a right turn onto the freeway and the car cut out. Turns out the transfer pump was angry and didn't want to cooperate with the main pump, starving it of fuel.
      I changed the transfer pump and everything is fine.
      Quote Originally Posted by JacksSenseOfRejection
      Here's a fun fact: if someone is hitting you with a metal pipe, stay down.

    8. Member Soccerpromaz's Avatar
      Join Date
      Jul 29th, 2005
      Location
      Canton CT
      Posts
      4,267
      Vehicles
      1985 Gli VRT Project, 1997 K1500 Ext Cab stepside, 2002 Tahoe
      02-03-2008 05:40 PM #8
      mines been doing this too, i am changing the pump as well as the filter...mine also bucks at idle really bad, just started doing that though.

    9. 02-08-2008 11:54 AM #9
      my car is doing the same thing. I put a fuel pump in but it ended up being a defective one. so im waiting on the new pump now as we speak

    10. Member Jetta A2 1989's Avatar
      Join Date
      Sep 7th, 2004
      Location
      Hamilton
      Posts
      800
      Vehicles
      1991 Jetta 8v
      02-08-2008 01:39 PM #10
      Quote, originally posted by brandonrosensteel »
      At least not over my rattling, plugged up catalytic converter, haha.
      Anyone else?

      If your cat is rattling and plugged why worry about it............ha ha


    11. 02-08-2008 07:06 PM #11
      I donno if you still have this problem cus everyone posted what i would say. For me i unpluged the plug going into the mass air sensor an cleaned it with electrical cleaner and it was perfect right after.

    12. Member brandonrosensteel's Avatar
      Join Date
      Nov 12th, 2007
      Location
      Fayettenam PA
      Posts
      2,444
      Vehicles
      1991 VR Coupe
      02-08-2008 08:55 PM #12
      It was dielectrically greased a few days ago.
      I dont know whats wrong with it, seriously.
      Its making me nervous because I dont know what could cause it and I really dont have the money to pay a shop to look it over, but its something I feel deserves a little bit of attention.
      I didnt find anything personally yet.
      I just bought a new valve pan gasket and spark plugs and a fuel filter.
      Im going to put them on either tomorrow or sunday and then start messing with the rest of it.
      Oh, but driving home tonight, I noticed it was cutting out in every gear consistently at 2,500 and 3,000. I didnt dare rev it higher becuase I didnt know what would happen, but it seems like when I would run it hard over 3,500, it would stop...
      EDIT: It cut out in every gear except first. Thought maybe I should mention that. First gear runs good and strong.
      I changed my oil today though, and after I did, my idle is perfect now?
      It was fluctuating all over the place previously and now it runs great sitting still.

      Heres a picture of my Jetta, by the way.
      Just to help with the views...



      Modified by brandonrosensteel at 9:20 PM 2-8-2008

    13. 02-08-2008 09:31 PM #13
      so it only happens while you turn?

    14. Member brandonrosensteel's Avatar
      Join Date
      Nov 12th, 2007
      Location
      Fayettenam PA
      Posts
      2,444
      Vehicles
      1991 VR Coupe
      02-08-2008 09:38 PM #14
      No, 3000 rpm. Any gear.
      And tonight I noticed it around 2500 too.

    15. 02-08-2008 09:39 PM #15
      i think you might have spark problems man. maybe bad plugs or wires. how old is the distributor.

    16. Member brandonrosensteel's Avatar
      Join Date
      Nov 12th, 2007
      Location
      Fayettenam PA
      Posts
      2,444
      Vehicles
      1991 VR Coupe
      02-08-2008 09:41 PM #16
      Not sure.
      I have only put 3000 miles on the car and got it in October.
      I bought new plugs and Im going to put them in either tomorrow or sunday.
      Someone else told me the distributor too.
      I was told to just replace the cap though and see if that helps...

    17. 02-08-2008 09:45 PM #17
      yeah, if you want to change the fuel filter also it is pretty much as easy as changing the plugs. just takes a little longer.

    18. Member brandonrosensteel's Avatar
      Join Date
      Nov 12th, 2007
      Location
      Fayettenam PA
      Posts
      2,444
      Vehicles
      1991 VR Coupe
      02-08-2008 09:48 PM #18
      Yeah, I got to get all the bugs out of this thing soon.
      I think one mount is bad too...
      Im leaning towards the tranny mount but Im not positive.
      Anyone else have any info?

    19. 02-08-2008 10:25 PM #19
      Not to be an ass, however, have you been using a Bentley at all? Before you throw money at parts you think are going to fix it, do some troubleshooting.

    20. Member brandonrosensteel's Avatar
      Join Date
      Nov 12th, 2007
      Location
      Fayettenam PA
      Posts
      2,444
      Vehicles
      1991 VR Coupe
      02-08-2008 10:35 PM #20
      Well, its not really just throwing the money, but its just the money for the basic maintenance stuff.
      I have been trying to update all of the things as I go along.
      As for the Bentley, no, unfortunately I dont own one.
      Im going to be placing an order from GAP within the next few days though and I plan to get one.

    21. 02-09-2008 02:53 AM #21
      Well i think after you change you fuel filter, cap and rotor, spark plugs an clean the mass air sensor plug you should be good an i dont think its a waste of money cus ive done it to my car an it runs better then b4. Hey just to say when you change your oil ive been told to use a vw oil filter cus something about oil pressure. An so affer doing that work you should out high octane gas an give your a nice rip get everything blown out. let me know what happens.

    22. Member Deutschbag's Avatar
      Join Date
      Aug 15th, 2003
      Location
      Bay Area, CA
      Posts
      10,255
      Vehicles
      93 Corrado SLC
      02-09-2008 04:10 AM #22
      It's not just the plug you've gotta clean, it's the whole airflow sensor. Mine was corroded inside, which caused it to get stuck every now and then. Make sure that the flap moves all the way without a hint of grinding or anything like that. The tolerances in there are pretty tight, any sort of corrosion in there could bind things up. The symptoms sound MAF related, try a spare or one from a buddy's car, see if that helps. And definitely do the full tuneup (plugs, cap, rotor, wires, air/fuel filters).

    23. Geriatric Member steveo27's Avatar
      Join Date
      Aug 1st, 2005
      Location
      Pittsburgh
      Posts
      46,354
      Vehicles
      2011 TRD Tacoma. Fake GLI. MK2 Unicorn
      02-09-2008 04:15 AM #23
      as long as the pumps not making noise, id try changin the fuel filter first. not to mention checkin out the plugs wire and rotor [IMG]http://**********************/smile/emthup.gif[/IMG]
      YOUR STICKER CLUB SUCKS

      Crooked Euros
      - Powered by Pabst and whiskey

      We Do It Big In PA

    24. Member brandonrosensteel's Avatar
      Join Date
      Nov 12th, 2007
      Location
      Fayettenam PA
      Posts
      2,444
      Vehicles
      1991 VR Coupe
      02-09-2008 12:31 PM #24
      Thanks guys, Ill take the MAF sensor apart today
      Ill post again to this after I get all of this changed over and we'll see how its doing then
      Thanks a lot! [IMG]http://**********************/smile/emthup.gif[/IMG]

    25. 02-09-2008 02:35 PM #25
      Quote, originally posted by steveo27 »
      as long as the pumps not making noise, id try changin the fuel filter first. not to mention checkin out the plugs wire and rotor [IMG]http://**********************/smile/emthup.gif[/IMG]

      what does it mean when the fuel pump makes noise? and what does it sound like?

    Page 1 of 2 12 LastLast

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •