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A4 2.0 Tdi shudder on hard acceleration!!!! HELP!!!

Discussion in 'Audi S4/A4/A4 Cab (B7 Chassis)' started by alastpa, May 13, 2009.

  1. alastpa
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    alastpa New Member

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    [May 13, 2009]
    Hello all
    My mother owns a 2005 B7 2.0 TDi with the 6 speed manual gearbox. For the past few months the car has had an intermittent shudder on hard acceleration. It comes and goes at random and occurs only during hard acceleration (eg: when the turbo is boosting) We have had it at the agent...who say that there is nothing wrong!! What could possibly be wrong??? I suspected a tired engine or gearbox mounting, but I have read some horror stories about failed dual mass flywheels etc! Has anyone experienced similar problems and if so how was it solved??? I am worried that ignoring this problem could cause serious damage to the car. Here in South Africa there have been numerous reports of A3's and A4's with failed gearboxes at fairly low mileages.
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  3. Dazmo
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    Dazmo Active Member

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    [May 13, 2009]
    Could be incorrectly balanced tyres?
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  4. gjrwilliams82
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    gjrwilliams82 New Member

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    [May 13, 2009]
    Most likely to be fuel starvation; check the fuel pumps - IIRC there's a pump near the tank which can be troublesome. This could cause the symptoms you describe. That sort of thing may well not show up on a computer diagnostic check, therefore the main agents (who are now 'technicians' and not mechanics) won't know anything about it.
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