Engine Reving high
Thread Starter
Teching In
Joined: Apr 2006
Posts: 45
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From: S.San Francisco, Cali
Engine Reving high My camaro is reving high after a few minutes of driving, around 1100-1200rpms. This does not always happen but is becoming more frequent. Also after driving on the freeway the engine will hang at 1500 for a few seconds then drop to 1100-1200rpms. I got a can of carb cleaner and checked for a vacume leak. I also changed my fuel filter since I was told that could be the case. Nothing so far has helped. I appreciate any help I can get. Thanks a bunch
Thread Starter
Teching In
Joined: Apr 2006
Posts: 45
Likes: 0
From: S.San Francisco, Cali
Thanks. So i checked to see if the plugs were tight and the wires look in good condition and are all the way on. I checked the injectors,MAF,TB,and Manifold. Is there anything that im missing on the vacume leak check. Thanks for all the help buddy
Thread Starter
Teching In
Joined: Apr 2006
Posts: 45
Likes: 0
From: S.San Francisco, Cali
Is the throttle position sensor the same as the IAC. I took my throttle body off completely and cleanded all the carbon build up in it. I also took the what I think is the IAC (the golden round thing stickin out the side of the TB) off and cleaned it also. It didnt seem to dirty just a little chip of carbon build up.
No, they are different sensors. TPS monitors how open the throttle blade is, from 0 to 100%, while IAC controls air coming into your engine to keep the car running at idle since the throttle blade is closed at that point. The IAC is basically a controlled vacuum leak, with a tube that bypasses the throttle blade letting air go into the intake manifold.
If you have jumps in rpm's when the car is in idle, then it might be that IAC sensor. If the rpm's jump up while the car is in gear, then it should be either a vacuum leak or TPS sensor. hope that helps.
If you have jumps in rpm's when the car is in idle, then it might be that IAC sensor. If the rpm's jump up while the car is in gear, then it should be either a vacuum leak or TPS sensor. hope that helps.
