Question about 1998 Audi A4

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1998 1.9 tdi loss of power

I have a 1998 1.9 tdi 90HP diesel sometimes it goes flat as though turbo isnt working? have changed air mass meter! no difference? it doesnt happen all the time. If and when this happens as soon as you turn the ignition off and on again the acceleration is there again?

Any ideas as to what this could be

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  • rawstu Oct 17, 2008

    I have the same problem, have decided to change the thermostat coz it seems to take longer to loose power on a cold day, i'm thinking its temperature related. If this works i'll tell you

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Code read the ecu sound like turbo problem they are a variable vain type turbo and the vains stick try putting a good fuel system cleaner through it it may take several goes but its cheaper than a turbo,if you code read it it will most probably come up with-boost control pressur difference------millers or forte fuel treatment are the best i have tried ....let me know how you get on....vagman54@btinternet.com

Posted on Oct 19, 2008

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