05 Passat TDI transmission mystery oil leak

Discussion in 'VW Mk4 Jetta, Golf, New Beetle, Passat TDI forum' started by Frostyref, Apr 24, 2017.

  1. Frostyref

    Frostyref New Member

    Joined:
    Mar 8, 2016
    Messages:
    22
    Car:
    2X '05 Passat TDI, 2014 Passat TDI
    Location:
    Jerome Idaho
    Mods:
    BSM delete on 1 '05
    I was driving my car, and I felt a bang like I hit something, but I never saw anything in the road either before the noise, or in the mirror after the noise. At the time I thought it must have been a piece of rubber from a tire. From the sound and vibration I thought it hit the drivers door and maybe left a dent. I drove another 150 miles, and when I stopped, there was no mark on the door, which was good news. However, after letting the car idle for 5 minutes, there was a large puddle of oil under the car, which turned out to be the transmission oil. I had the car towed to a shop (nothing like being 400 miles from home with tranny trouble right?). They put it on the rack and told me that there was a big dent in the bottom of the pan, and that the oil was coming from around the gasket. They couldn't tell me why it didn't start leaking till after I stopped, but that's the case. Shop bought a new pan, and replaced the filter, gasket, and oil. and 2 weeks later I drove the 400 miles back to the car and picked it up. I went 30 miles to a hotel and the car seemed to shift and transfer power fine, but when I came out in the morning, there was a big puddle of oil under the car. Had the shop come back and get the car the following Monday (did I mention how much fun it is to have a disabled car 400 miles from my garage and tools?). They called me 5 days later to tell me that this oil leak appears to be coming from higher up in the transmission (he suggested a leaking pump or line?). I don't have any pictures and they told me that the oil runs out very fast and the car would not be drivable. They said that this is not their kind of thing and they wouldn't attempt repairs on the new problem. As I am not too familiar with the working of the transmission on my Passat, I was hoping that someone could tell me if I am screwed, or if there is some place else that the oil could be coming from?
     
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  2. db52282

    db52282 New Member

    Joined:
    Nov 30, 2010
    Messages:
    10
    Car:
    2005 Passat TDI
    Location:
    Sharpsburg, GA
    I'm not a mechanic ... but I also have a 2005 Passat TDI. I would have someone check the Tandem Pump which is located on the back side of the engine (head). Mine was leaking before I had it fixed and lots of oil would be on the belly pan when I changed the oil. You might also have a leaking valve cover gasket. Just a thought...
     
  3. Frostyref

    Frostyref New Member

    Joined:
    Mar 8, 2016
    Messages:
    22
    Car:
    2X '05 Passat TDI, 2014 Passat TDI
    Location:
    Jerome Idaho
    Mods:
    BSM delete on 1 '05
    What was the fix that you had to do the to tandem pump? I have an appointment to take it to an AMCO place this week to be evaluated.

    I don't think it is motor oil, as it really thin and not black. I think I can rule out the valve cover.
     
  4. db52282

    db52282 New Member

    Joined:
    Nov 30, 2010
    Messages:
    10
    Car:
    2005 Passat TDI
    Location:
    Sharpsburg, GA
    The fix for my tandem pump was to replace the gasket. It is very difficult to replace due to the location of the pump and it being so cramped.
     
  5. Frostyref

    Frostyref New Member

    Joined:
    Mar 8, 2016
    Messages:
    22
    Car:
    2X '05 Passat TDI, 2014 Passat TDI
    Location:
    Jerome Idaho
    Mods:
    BSM delete on 1 '05
    I'll let you know what the service guys say. Thanks for your advice.
     

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