This issue has been going on for a while.
When I step on the throttle in any gear, The engine just revs up high and then drops to around 2000-2500 rpms.

I think my clutch is slipping, but I still think there is something else.

any ideas?

 

First off, you need to give more specific information - spare us no detail.
Is your car S4 or S5, n/a or turbo, manual or auto? That's a good place to start.
Then giving a very specific account of what is happening, what causes certain things to happen ,etc, will let us figure out your issue better.


If you're manual, will it rev before you release the clutch, and won't go above 2k-2.5k in gear?

More information will really help with troubleshooting.

 

I was going to say no power when giving it gas is usually a sign of being n/a, but I resemble that remark...

 

the FC is a S5 N/A manuel.
To answer the reving issue:
I would have the car in ANY gear(1-5) and when I would depress teh throttle to speed up, it would just rev up and fall back down to around 2000-2500 rpms.

 

Does the car feel like it's bucking or have power surges within that RPM range?

Does this happen only when shifting into gear, or when you're sitting in gear and try to accelerate?
If it is the latter, will it rev beyond there if you stay on the throttle long enough?

Sorry for all the questions, but we need to break down what is actually going on here - it's always harder to tell when you can't see the car in person. You wouldn't happen to have any means of making a video, would you?


-Collin


p.s. Right off the bat, I have to say it sounds like a problem with your O2 sensor (or possibly your ECU or the wiring between the two.)

 

Its ok keep the questions coming.
Well it is when I am in gear and try to accelerate.

 

Okay. It does sound like a slipping clutch. When accelerating in gear -Does it overrev without gaining speed initially, then RPMs lower and pick up slowly and the car gains speed?

 

The engine overrevs without accelrating.

 

+1 bad clutch.