car wont go past 3500/4000 rpm

1991 AUDI QUATTRO
117,000 MILES
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IANOWEN
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I have an audi 2.3 20v quattro and when i accelarate the car wont go past 3500/4000 rpm feels like brakes are on or its being held back brakes are fine drive train is fine when car is in newtral the engine revs fine
Feb 15, 2012 at 3:23 PM
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RASMATAZ
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Your transmission could be slipping or the exhaust system has restriction, also check the wide open throttle switch on the throttle body-
Feb 15, 2012 at 10:09 PM
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IANOWEN
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do you think it could be miss firing under load
Feb 16, 2012 at 7:56 AM
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RASMATAZ
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Refer to this links: https://www.2carpros.com/articles/engine-misfires-or-runs-rough and https://www.2carpros.com/articles/engine-hesitates
Feb 16, 2012 at 8:29 AM