[boofool98gt]

i pretty much asked the question in the title i was wondering if anyone knew because i diconneted it and the runs better than with it being hooked up

 

[RandyStinchcomb]

if you disconnect the plug going to the IAC the car should die-out, sounds like you have a huge vacuum leak somewhere...........

 

[smasher41]

could his throttle body idle screw be set wrong ( aftermarket perhaps?)