I have a 95 mustang and have replaced MAF, TPS, put two diffrent IAC, and checked for vacuum leaks. do
you guys have any idea's what else can it can be? it idle's around 2000 to 2500 rpm

Before it takes a long ride off a short pier......

 

that is REALLY high. wat kind of mods do u have?

 

it is my dads car and it came just under drive pullys. Well i found out that when buying aftermarket IAC to check how the valve sets in the new IAC before you buy it. the three that i had the employee at the parts store go through all where no good. took one off old motor cleaned it up BABA BING it runs great...

 

Sorry to be off topic, but I have to ask. What do you have with 500 hp that weighs 4300lbs? Lightning?

 

my guess is its a crown vic. hes got a blown crownvic in his photo gallery.

 

it 's not a Lightning, It's what a like to call a family car 00 Crown vic fully loaded and supercharged