I replaced the idle control valve on my 97 blazer and someone told me it needs to be reset and that it can only be done by the dealer. Is this true.

 

If you disconnect the battery for 10-15 minutes, the IAC position reference will be wiped and reset when the engine is run next. Just start the engine and let it run until idle sets to a constant 7-800RPM for cold, 5-600RPM for hot.

 

Cool thanks. I also replaced the throtle position sensor. Do I need to do anything speacial for that?

 

Nope.

 

Let me give the whole story. I have a code that says high RPM detected. I changed the IAC, TPS, New timing chain, Cleaned the EGR, new plugs, wires, distributor, rotor, cap, Crank position sensor and it still shows the code. It runs great except for at a stop it rough idles for 3 - 4 seconds and then is fine. During the rough idle, the oilpreasure gauge is going crazy and then it goes normal

 

test

 

Hey swartlkk, I wanna start with the complete list of what is happenning with my vehicle since I think people are just reading the first post about the IAC. Can I delete this one and make a new thread?

 

Sure, go ahead. Hopefully I can respond with more than 15-20 words...