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Re MAF symptoms

Discussion in 'TDi - SEAT Diesel specific topics' started by micky 32, Nov 22, 2005.

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  1. micky 32

    micky 32 Full Member

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    Can a MAF give an intermittent fault? say sometimes turbo might not kick in properly and then when release accelerator and press again have the full boost?
     
  2. OLDOILER

    OLDOILER Full Member

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    Find some one local with a VAG COM and try it out - it could be the vari vane linkage?? - seeing its a Hybrid from your description - is it still under warranty (modified kit warranty)
     
  3. micky 32

    micky 32 Full Member

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    the turbo is only about 8 months old. A month or 2 ago it started to do this, it would happen at least once a day on average, i would put my foot down and it would take up slowly with more smoke, but if i let off the pedal and press again it was fine..

    Then a couple of weeks ago my fuel consumption dropped and then i got more lag and it didnt feel like it was pulling right a lot of the time, and then it would be ok

    so i took out MAF and sprayed with contact cleaner and ive done 1k since and it was perfect, no lag, pulled well, economy got better and turbo cut in everytime.

    Yesterday i only got 36mpg, lower than usual and today the turbo not kicking in happened once.... god i hope it aint the turbo.
     
  4. OLDOILER

    OLDOILER Full Member

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    Could well be MAF, on this site go to VAG COM you will find a thread listing holders who are prepared to help, there are several in Ireland.
    Would still go the the garage that installed your mod though, there is normally some warranty/ liability etc.
    Good luck
     
  5. sssstew

    sssstew Editing your spelling

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    i would say no. from my experience and what i have read MAFs die slowly, loosing performance over a long period of time, slowly getting worse and worse.

    Although saying that some people with the petrols have had them jsut go straight away, bang and its useless im sure ive read.

    But ive never heard of an intermittant fault with the maf.
     
  6. micky 32

    micky 32 Full Member

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    im hoping its not turbo, its only 8 months old (Allard). It doesnt go into limp mode becasue when it happens i let go off the pedal and press again and off she goes.
     
  7. micky 32

    micky 32 Full Member

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    One thing iforgot to mention, but it only happened once about a month ago. i was driving in third at about 2500rpm part throttle and the car started rocking backwards and forwards gently but hasnt happened since.
     
  8. OLDOILER

    OLDOILER Full Member

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    Have you spoken to Allards at Glostershire - they may be able to help via the phone???
     
  9. micky 32

    micky 32 Full Member

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    things have got worse, the car went into limp mode today and i was only at cruising speed at 75mph in 6th gear when it happened. Switched it on and off and it came back ok. I had vagcom but i lent the laptop to someone and i got it back broke.
     
  10. prc

    prc Sooty Meister

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    Not starting to sound like a MAF fault Micky. Could possibly be turbo, lets see what vag com brings up.
     
  11. basstard

    basstard Dropping Cogs is Useless

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    happens sometimes,,, I always thought it was the transmission,,,
     
  12. prc

    prc Sooty Meister

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    Or a broken motor mount... ;)
     
  13. basstard

    basstard Dropping Cogs is Useless

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    will check, thanx paulo!!
    :cheers:
     
  14. micky 32

    micky 32 Full Member

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    Well i got hold of a vagcom tonight, it read "boost pressure negative deviation" something in those lines anyhow.
     
  15. basstard

    basstard Dropping Cogs is Useless

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    'something in those lines anyhow' ain't exactly technical,,,

    check the IC pipes, might be a bad connection and you're loosing pressure,,,
     
  16. micky 32

    micky 32 Full Member

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    i noticed today when stationary and window down when i revved the car, as the revs slowed down i could hear some sort of a slight fluttering sound, must be a leak somewhere.
     
  17. basstard

    basstard Dropping Cogs is Useless

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    fill the tub, put the car into it and then boost it,,, you should find the leak,,,
    :hide:
    [already called a taxi, thanx]
     
  18. micky 32

    micky 32 Full Member

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    at the moment its hard to pinpoint it, it seems its coming from the turbo area and fairly oily around it too, i can see a drip of oil just hanging off the actuator thingy where the vac hose connects.. il have to get under it this weekend.
     
  19. sssstew

    sssstew Editing your spelling

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    rub some very lightly watered down washing up liquid on the joints. will bubble if theres a leak.
     
  20. micky 32

    micky 32 Full Member

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    thanks will do that ;)
     

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