IAC didn't fix the problem with my idle
06-19-2009, 05:14 PM
#1
On The Tree
Thread Starter
iTrader: (3)
Join Date: Jun 2009
Location: Southern Indiana
Posts: 194
Likes: 0
Received 0 Likes
on
0 Posts
IAC didn't fix the problem with my idle My 93 trans am has been idling about 300-400 rpm high at about 1100-1200 rpm.
Everyone told me it was my IAC, so i shell out 75 dollars and it didn't help.
I tried the hold the gas when starting and wait 5 seconds, it didn't help.
I just screwed the little pin in a few threads and stuck it in, should I do something different?
Everyone told me it was my IAC, so i shell out 75 dollars and it didn't help.
I tried the hold the gas when starting and wait 5 seconds, it didn't help.
I just screwed the little pin in a few threads and stuck it in, should I do something different?
06-19-2009, 05:16 PM
#2
My 93 trans am has been idling about 300-400 rpm high at about 1100-1200 rpm.
Everyone told me it was my IAC, so i shell out 75 dollars and it didn't help.
I tried the hold the gas when starting and wait 5 seconds, it didn't help.
I just screwed the little pin in a few threads and stuck it in, should I do something different?
Everyone told me it was my IAC, so i shell out 75 dollars and it didn't help.
I tried the hold the gas when starting and wait 5 seconds, it didn't help.
I just screwed the little pin in a few threads and stuck it in, should I do something different?
06-19-2009, 05:19 PM
#4
I would also check your intake elbow, PCV hoses, brake booster hose, all vacuum and air hoses for leaks. A vacuum leak can cause a high idle.
06-19-2009, 05:27 PM
#11
http://shbox.com/1/accelerator_stop.jpg
Adjust that screw so that the blades close all the way. It's on the back of the TB by where the cable attaches. If you pull open the blades by hand, you should see the screw protruding to stop the lever at a certain point. You might have to remove the TB to do so. FYI, alot of TB gaskets will block this adj screw, so you might not see it.
Adjust that screw so that the blades close all the way. It's on the back of the TB by where the cable attaches. If you pull open the blades by hand, you should see the screw protruding to stop the lever at a certain point. You might have to remove the TB to do so. FYI, alot of TB gaskets will block this adj screw, so you might not see it.
06-19-2009, 05:29 PM
#12
On The Tree
Thread Starter
iTrader: (3)
Join Date: Jun 2009
Location: Southern Indiana
Posts: 194
Likes: 0
Received 0 Likes
on
0 Posts
It turns out that the blades are closed, but it's not perfectly straight up and down, which I don't think that they could get that way am I right?
06-19-2009, 05:45 PM
#19
Look for holes visually. You can also spray starter fluid around your intake manifold at all the sealing surfaces and along all the vacuum lines. If there is a vacuum leak, when you spray at it, the idle will go up. Just don't go crazy and burn your engine down, lol.
06-19-2009, 05:53 PM
#20
On The Tree
Thread Starter
iTrader: (3)
Join Date: Jun 2009
Location: Southern Indiana
Posts: 194
Likes: 0
Received 0 Likes
on
0 Posts
I think I found it, just to the left of the intake there's a 90* rubber elbow connected to a 6 inch tube, that fitting is absolutley shot. Would that be it?