Audi Repair Questions? Ask a Mechanic for Answers ASAP
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One common cause for the engine to rev up by itself is a vacuum leak on the engine needing located and repaired.This can be a loose or damaged vacuum hose or even a leaking gasket like an intake gasket leaking or similar needing replaced.If you have not had the engine checked over for any leaks this needs done and in some cases a smoke machine is needed to inject smoke into the intake to locate any hard to see leaks like the intake gaskets leaking.
If the check engine light has come on with this issue here the fault codes need checked with a fully compatible scan tool to see what codes are set and from there repaired to correct this fault.
The other issue can be a fault with one of the injectors acting up allowing to much fuel which will cause an uneven idle or rev and jerk feel.This should be tested as well.
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