hello mustang guys, im new to this and i was hoping i could get some help. i have a 91 mustang with a 302, i pretty much have evey 93 cobra bolt-on, on it as possible. well heres the problem, when im at a dead stop like a red light or stop sign, my rpms start bouncing! ive changed my throttle control censor and ive changed my sparkplugs and rotor and cap and i bought new wires and i dont have a vacuum leak. i dont kno what else to do! any help would be very appreciated! thank you.

 

replace the Idle air control valve, or IAC.
Cylindrical thing on a 45 degree angle, bolted to the front of the throttle body.

 

o im srry i forgot to mention i changed that also. i dont kno what else to do

 

does the idle ever catch itself, or does it continue to bounce until you take off again?

 

yes when i changed both of those censors, like it helped out aliitle. and now it does it somtimes. it will bounce then stop then itll do it agin. like when i step on it and come to a stop its ok. but when im cruising and come to a stop it will do it agin! almost as if somthing heats up!

 

what kind of injectors you runnin?

 

ford racing 24lb

 

fuel pressure possibly that was my problem. I dropped mine lower and it runs great now

 

stock mass air??