Ok, I really need some help here. Car will idle back and fourth from 500 to 700 rpms. Some times when the car is costing at like 15 to 20 mph it wants to stall, but after a few seconds the rpm's will kick back up. I've changed like every sensor IAC,TPS,MAP..ect nothing no chang . No check engine light , no codes. I Would appreciate any help here It's really getting on my nerves. Tahnkx

 

Search for vacuum leaks, clean the throttle body, check the TPS voltage, and make sure the fuel pressure remains stable.

Dr. Hunter Thompson?

 

I did all that and still nothing.