Questions & Answers for: GMC iac

...Check for vacuum leaks and test the idle air conrtol valve. TESTING See Figure 2 Disengage the IAC electrical connector. Using an ohmmeter, measure the resistance between IAC terminals A and B. ...

...put it in gear it dies, give it gas it will run but not good It sound like your idle air control (IAC) valve is dirty and the fuel injectors. Try cleaning the throttle body and IAC with throttle ...

I have a check engine light that when trouble shot says iac valve or motor. 100K miles and when driven the idle is extremly high. But if you drive it 60 miles on howay and then stop and restart the ...

irradic idle and wants to die when decelerating or stopping Try cleaning your IAC (idle air control) Valve, it's located in your throttle body and is easily cleaned by spraying throttle body cleaner ...

but runs fine at highway speeds Clean your Throttle body and pay attention to the Idle Air Control (IAC) valve passageway to try to clean the IAC. A dirty or faulty IAC will cause your engine to stall

...it acks like it isn't getting any gas. What do you think the problem could be? Dirty or faulty IAC ( idle air control) valve. The IAC is located in the throttle body and 95% of the time can be ...

...compartment? If not, suspect the idle air control valve. I have pasted test procedures for the iac below. Be careful not to confuse the tps with the iac. The tps is centered on the ybro5ttle

engine idles too low Do you have any engine code.if not clean trottle body plate and around. remove iac valve clean the hole and iac pintle what is low idle for you . idle is control by iac valve, tps

ok so i got a question here i have a 1998 gmc seirra 5.7 vortec i would like to tap into the iac with a toggle switch for high idle when i want does anyone have any idea how to do this my old ford was

Why does IAC continually fail every 4 or 5 months? I have changed the IAC 3 or 4 times in a year and they continue to go bad.It starts here and there then it becomes all the time and it is a manual ...