I got a 95 1.8L Impreza.

 

Issue: When started, the RPMs shoot up to 3,000 or 4,000 and stay there.

 

Diagnosis: I originally thought it was the throttle cable or the throttle body. Not those.

 

Soooo, now I'm thinkin its a vaccum issue. Any thoughts on this?

I think it's the throttle position sensor or a stuck idle control valve.

 

Did you just buy this car? How many miles on it? What transmission?

I think it's the throttle position sensor or a stuck idle control valve.

 

Did you just buy this car? How many miles on it? What transmission?

 

I've had the car for over two years. Just turned over 190k. Its got a 5-speed tranny, not sure of any specific type.

 

I'm gunna check what the CEL code was. However, since I've never done this before, I need to know where to connect the OBD II Scanner I borrowed from a friend.

 

Also, whats the easiest way to do a vacuum leak check by myself? Never done that before either. But you live, you learn.

 

Thanks again for your help.

There may be a cover on dash to the left of the steering column that says "diagnostic connector" or "OBD" on it.

 

Checking vacuum is best done with a gauge but you can usually find a leak by ear if you know what to listen for.

 

It could also be possible that the throttle plate is stuck or binding, or the throttle cable is binding, or the gas pedal is stuck or jammed under the floor mat.