Just got done fighting a similar issue with my car. After you have determined there are no vacume leaks, and closed your throttle blades and readjusted the TPS, pull the TB off and drill out the hole that is in the lower part down by the IAC, between the throttle blades a little bit bigger. This cured my problem.


I ended up drilling mine out 1/32" bigger than the original size. It seems a lot of cammed cars have this issue, I spent hours searching this site for info on it.

 

ok..how do I adjust the TPS? I will do that next. But it was working then it wasn't..how did it all of a sudden not get air or things change?


Brad

 

Mine popped up when i finally fixed the vaccume leak that I had. Have you been working on the car at all lately.

I thought you had had this problem since the cam install. Mine usually gave me more problems when the A/C was on.

You really need to get some sort of a scan tool. Thats how you adjust the TPS, you need to read the voltage. You might be able to do it with a multimeter. Check out shoeboxx tech page, he probably has instructions. You also need to look and see what your IAC counts are with a scanner.


Also, are you sure you dont have any big vacume leaks? Check under the TB where the PCV line goes into the front of the intake. That little elbow is prone to cracking.

Basically it comes down to you needing a scan tool. If your IAC counts are high, then you are not getting enough air, if they are low then you have a vacume leak somplace.