04 passat downshifts hard

Discussion in 'Import Vehicles' started by heyarn, Jun 3, 2017.

  1. heyarn

    heyarn Full Member

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    Please fill out the following to ask a question.

    MAKE:vw
    MODEL:pasat
    YEAR:2004
    MILES:129,
    ENGINE:1.8
    DESCRIBE ISSUE....after its warmed up, it downshifts hard at 30mph when coasting or braking , feels like the converter is locking up, also when i put it in reverse it bangs into gear, also like the converter is lock up
     
  2. kev2

    kev2 wrench

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    I am not much help with VW but-
    first suggestion - scan for codes even if light is out. Post all codes.
    Fluid check - sometimes easier said than done.

    And hopefully our trans guru will add some specific steps to take -
     
  3. billr

    billr wrench Staff Member

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    Use live-data to look at line pressure commanded, TCC commands, and TCC slip; see what is going on. If no joy from that, then you can use a mechanical gauge to compare "commanded" LP to what is actually being set. Yeah, I hope BP has a simpler solution...
     

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