I just talked to my grandpa, who has worked with me on my truck, he said we had already replaced the IAC, what else could it be.

 

when you guys have said "they tend to get stuck what does that mean. is there suppose to be a peice that moves.

 

It does move. It screws in and out to adjust the air flow into the engine to keep Idle. Even new ones do fail. It is a very common problem.

 

i had the same problem with my 94, the new IAC cured it. mine was like $32 at o'rieleys.

 

we had replaced the IAC towards the end of the summer and it has just started to do this, and where is the engine coolant temp sensor

 

I had to replace the IAC 3 times in two weeks when mine went bad. Check to see if yours has a warrenty and go replace it again. We aren't trying to steer you the wrong way, and I wasn't joking when I said they are notorious for freezing up.

But I did figure this out since my truck has been a manual. If you are coasting and have it in neutral, the IAC keeps the engine idling at around 1000 rpms and as soon as you come to a stop (the VSS reads nothing), it drops the engine to its normal idle. Try doing that, and if the idle speed doesn't change from moving to stopped, you have a bad IAC.

 

ill give it a try in the next couple of days, and mine is a automatic, so if you have any suggestions.

 

Automatics still have neutral.

 

i just replaced the IAC and it has helped, but now when in park the rpm's rev up and down, hasnt stalled yet, any ideas

 

Give it a few days to learn the new IAC. Thats normal behavior. If it doesn't clear itself up, then there is another problem.