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Thread: Passat engine pulsing

  1. #16
    Registered User witchcraftz's Avatar
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    Default Re: Passat engine pulsing

    You've covered everything that I can think of that is simple.... Tbelt tensionner?

  2. #17
    less pump-per-nickel stefan's Avatar
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    Default Re: Passat engine pulsing

    Quote Originally Posted by witchcraftz View Post
    You've covered everything that I can think of that is simple.... Tbelt tensionner?
    Timing belt isn't that old. Lost track of time a little, but I think I replaced it two years ago. Popped cover off and gave it a wiggle to check for play. Seems toit.
    Stefan
    -> '05 Urban Grey Passat Wagon TDI. Malone 1.5, De-chained BSM.
    -> '06 Silver Mazda 5
    -> Past rides: '98 Jetta K2, '01 Jetta TDI, '91 Mazda B2200, '81 Toyota Cressida

  3. #18
    rubadubdub danosaur's Avatar
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    Default Re: Passat engine pulsing

    Try putting it in different gears and holding it the way you would normally feel it. Changing the path of power through the transmission to see if you notice a difference may point you towards it being an engine or transmission issue.

  4. #19
    Registered User dJ's Avatar
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    Default Re: Passat engine pulsing

    Yeah my money is on the transmission. Just convince vw that they need to replace it with a 6 speed
    2001 Jetta TDI GL Silver
    Malone Tune stage 5+ ,VNT17-22Turbo, OMI, PP Race Pipe, PD 150 Intake, 2 1/2" Straight back exhaust, no mufflers, 2 1/2" downpipe straight no Cat, Race 520 Injectors, 11mm Fuel Pump, Lift Pump, EGR Delete mod,DC Stage IV Clutch, Michelin X-Ice 2's, 26 lb/s of boost alll day long, Smoking like a train!

  5. #20
    less pump-per-nickel stefan's Avatar
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    Default Re: Passat engine pulsing

    Quote Originally Posted by danosaur View Post
    Try putting it in different gears and holding it the way you would normally feel it. Changing the path of power through the transmission to see if you notice a difference may point you towards it being an engine or transmission issue.
    The forward gears, I would say, have slightly less pulsing then reverse. I noticed the issue first while stopped in reverse. That said, it's not a huge difference.
    Stefan
    -> '05 Urban Grey Passat Wagon TDI. Malone 1.5, De-chained BSM.
    -> '06 Silver Mazda 5
    -> Past rides: '98 Jetta K2, '01 Jetta TDI, '91 Mazda B2200, '81 Toyota Cressida

  6. #21
    less pump-per-nickel stefan's Avatar
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    Default Re: Passat engine pulsing

    Quote Originally Posted by dJ View Post
    Yeah my money is on the transmission. Just convince vw that they need to replace it with a 6 speed
    Would be a big job.. and I'd probably have to buy another car while sorting it out... but sure would be cool
    Stefan
    -> '05 Urban Grey Passat Wagon TDI. Malone 1.5, De-chained BSM.
    -> '06 Silver Mazda 5
    -> Past rides: '98 Jetta K2, '01 Jetta TDI, '91 Mazda B2200, '81 Toyota Cressida

  7. #22
    Registered User witchcraftz's Avatar
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    Default Re: Passat engine pulsing

    Are you using a K&N filter by any chance?

    I can't remember but is it MT or AT? If it's a 01M you may need to change the solenoids.

    You could perhaps have a bad fuse?

    Maybe a clogged fuel filter?

    Or perhaps a bad N18 Valve?
    https://www.youtube.com/watch?v=bGcZExWof8U
    Last edited by witchcraftz; 11-17-2017 at 10:33 AM.

  8. #23
    less pump-per-nickel stefan's Avatar
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    Default Re: Passat engine pulsing

    Are you using a K&N filter by any chance? No

    I can't remember but is it MT or AT? If it's a 01M you may need to change the solenoids. AT. Apparently an 01V... I think.

    You could perhaps have a bad fuse? Dont know, but something I can look in to

    Maybe a clogged fuel filter? No, its pretty much new, and I checked that the lift pump was pushing fuel through it at a reasonable rate.

    Or perhaps a bad N18 Valve? I have another that I took apart and cleaned. Would be good enough to swap for a test.
    Stefan
    -> '05 Urban Grey Passat Wagon TDI. Malone 1.5, De-chained BSM.
    -> '06 Silver Mazda 5
    -> Past rides: '98 Jetta K2, '01 Jetta TDI, '91 Mazda B2200, '81 Toyota Cressida

  9. #24
    rubadubdub danosaur's Avatar
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    Default Re: Passat engine pulsing

    Quote Originally Posted by stefan View Post
    The forward gears, I would say, have slightly less pulsing then reverse. I noticed the issue first while stopped in reverse. That said, it's not a huge difference.
    My money is on the transmission as well. The fact you can tell a difference between forward and reverse gears doesn’t make sense for an engine related problem. Double check your engine/transmission mounts before going any further, as well. Worn mounts can translate into feeling more driveline vibrations inside the cabin.

  10. #25
    less pump-per-nickel stefan's Avatar
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    Default Re: Passat engine pulsing

    Well, I'll continue to check out anything else I've missed. If I don't get anywhere, I'll send it to Tunedub and see if they can give me a straight answer. Might also do a little cost comparison between an AT replace and an MT import and swap, just so I know what I'm up against if it does pack up.
    Stefan
    -> '05 Urban Grey Passat Wagon TDI. Malone 1.5, De-chained BSM.
    -> '06 Silver Mazda 5
    -> Past rides: '98 Jetta K2, '01 Jetta TDI, '91 Mazda B2200, '81 Toyota Cressida

  11. #26
    Member Tuna's Avatar
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    Default Re: Passat engine pulsing

    Did you try insulting it's mother?

    Sorry I have nothing to contribute but really making me think twice about buying an older winter car.
    Jay

  12. #27
    less pump-per-nickel stefan's Avatar
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    Default Re: Passat engine pulsing

    Quote Originally Posted by Tuna View Post
    Did you try insulting it's mother?
    Yup. That's the first thing I thought to do...
    Stefan
    -> '05 Urban Grey Passat Wagon TDI. Malone 1.5, De-chained BSM.
    -> '06 Silver Mazda 5
    -> Past rides: '98 Jetta K2, '01 Jetta TDI, '91 Mazda B2200, '81 Toyota Cressida

  13. #28
    Diesel Nut
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    Default Re: Passat engine pulsing

    Remanufactured trans from VW is about $4k for just the trans. 5 speed manual half the price, and a 6 speed about $3k for parts. Labour will be 10-15 hours for the manual, probably 8 hours for the slush box.
    Ben
    2016 Ram 3500 Laramie
    2000 Jetta TDi, Dead and removing parts
    2005 Passat Wagon TDi, 310,000 km's and counting, BSM delete done....Trans died going to replace
    Her's
    2016 Toyota Highlander XLE Pearl White

  14. #29
    less pump-per-nickel stefan's Avatar
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    Default Re: Passat engine pulsing

    Quote Originally Posted by Benjamin View Post
    Remanufactured trans from VW is about $4k for just the trans. 5 speed manual half the price, and a 6 speed about $3k for parts. Labour will be 10-15 hours for the manual, probably 8 hours for the slush box.
    10-15hrs of your time is probably 15-30hrs of mine. Haha. But still, it would be a cool project if I could make time for it.
    Stefan
    -> '05 Urban Grey Passat Wagon TDI. Malone 1.5, De-chained BSM.
    -> '06 Silver Mazda 5
    -> Past rides: '98 Jetta K2, '01 Jetta TDI, '91 Mazda B2200, '81 Toyota Cressida

  15. #30
    Registered User dJ's Avatar
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    Default Re: Passat engine pulsing

    Ben can probably replace the slushbox in 3 hours with his eyes closed. He's done it several times the past year of two lol.
    2001 Jetta TDI GL Silver
    Malone Tune stage 5+ ,VNT17-22Turbo, OMI, PP Race Pipe, PD 150 Intake, 2 1/2" Straight back exhaust, no mufflers, 2 1/2" downpipe straight no Cat, Race 520 Injectors, 11mm Fuel Pump, Lift Pump, EGR Delete mod,DC Stage IV Clutch, Michelin X-Ice 2's, 26 lb/s of boost alll day long, Smoking like a train!

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