IAC Problems
02-21-2005, 12:32 AM
#1
1st Gear Member
Thread Starter
Join Date: Dec 2004
Location:
Posts: 141
IAC Problems
I think that my IAC is going out. When I first start the car, it revs to between 2 and 3 grand for about 5 seconds, and then drops down to around 800. The idle isnt steady either, especially once it warms up. My friend had the same problem with his thunderchicken, and a IAC fixed the problem. Any ideas? Thanks.
02-21-2005, 01:13 AM
#3
Join Date: Jul 2004
Location:
Posts: 29
RE: IAC Problems
Have you tried cleaning the IAC? My '92 GT used to have idle problems in the morning until i finally cleaned the IAC and now, no more of that b/s. Just add soap, water, and brush. But i did find out that after awhile, no matter how much you clean it the idle is still jumping around because of the motor in the IAC, so you may end up replacing the whole thing eventually.
Someone loan me their battery. 
02-21-2005, 10:39 AM
#6
1st Gear Member
Thread Starter
Join Date: Dec 2004
Location:
Posts: 141
RE: IAC Problems
Bobby- what should I have the TPS at, and how do I check it? And yes, I have tried cleaning it. It ran good for about 2 hours, and then back to the same old crap. I was afraid of it being the IAC. It looks like the one for my friend's thunderchicken. If it is, its about a 60 part. That sucks
02-21-2005, 02:01 PM
#8
I ♥ Acer
Join Date: Sep 2003
Location: United States
Posts: 8,826
RE: IAC Problems
no need to mess with the idle screw unless it doesnt idle high enough... if your surging then yea clean / replace the IAC and check the TPS, around .98v for best performance like they said... check it KOEO. 9 out of 10 its either the IAC or TPS with surging probs.
02-21-2005, 02:32 PM
#9
5th Gear Member
Join Date: Oct 2003
Location: Mishawaka,Indiana
Posts: 3,742
RE: IAC Problems
ORIGINAL: brando5.0
Bobby- what should I have the TPS at, and how do I check it? And yes, I have tried cleaning it. It ran good for about 2 hours, and then back to the same old crap. I was afraid of it being the IAC. It looks like the one for my friend's thunderchicken. If it is, its about a 60 part. That sucks
Bobby- what should I have the TPS at, and how do I check it? And yes, I have tried cleaning it. It ran good for about 2 hours, and then back to the same old crap. I was afraid of it being the IAC. It looks like the one for my friend's thunderchicken. If it is, its about a 60 part. That sucks
02-21-2005, 03:02 PM
#10
2nd Gear Member
Join Date: Aug 2004
Location: Richmond
Posts: 464
RE: IAC Problems
ORIGINAL: brando5.0
I think that my IAC is going out. When I first start the car, it revs to between 2 and 3 grand for about 5 seconds, and then drops down to around 800. The idle isnt steady either, especially once it warms up. My friend had the same problem with his thunderchicken, and a IAC fixed the problem. Any ideas? Thanks.
I think that my IAC is going out. When I first start the car, it revs to between 2 and 3 grand for about 5 seconds, and then drops down to around 800. The idle isnt steady either, especially once it warms up. My friend had the same problem with his thunderchicken, and a IAC fixed the problem. Any ideas? Thanks.
When i unplug the TPS it gets worse, when i plug it back in, it gets a little better, NOW when I unplug the IAC the car just shuts off[&:]
I have a new IAC valve at home and i was getting ready to take it back, does this sound like the same problem??
IF so, i'll replace that turd in a heartbeat.