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Why does my A4 lack power

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AUDI A4 QUATTRO B6

when i accelerate the car it seems like its lacking power, i push the acceleration pedal all the way to the floor and still no juice. the car slowly gets up to speed. i changed the Mass air flow sensor but still lack of acceleration power. i waste so much gas trying to keep up speed. please help!

Year and mileage?

3 Answers
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Could be any number, or combination, of things. But if it is really down on power like that, being an Audi, it is probably the turbo. 

 

You don't want to know the cost to fix it.

thank you so much

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Most frequently, a turbo problem - does it have a boost gauge? Automatic or manual?

automatic

no boost gauge

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Have you already checked for simple things like a dirty air filter, clogged fuel filter & pressure tested the fuel pump?

Any codes?

i haven't pressure tested it yet or check the fuel filter

Is there smoke pouring out of the tailpipe? Any strange noises from the turbo?

no noise no smoke

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