'87 IROC TPI idle stall w/air on - Team Camaro Tech
Troubleshooting Diagnosing problems done here.

LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old Jul 17th, 06, 08:28 PM Thread Starter
Tech Team
Call me Jim
Join Date: Jul 2006
Location: Mebane, North Carolina
Posts: 91
Send a message via AIM to brightblue87iroc
Cool '87 IROC TPI idle stall w/air on

A couple of times lately in very hot weather I've cranked my IROC up with the engine cold, turned the a/c on, and the engine will die. Trying to restart it will run a few seconds, then die again, sounding like it's loading up, and the Service Engine light will come on. Once the air gets cooler the car will run fine as long as I don't turn the air on. The computer stores no codes and resets itself. I've been told it could be the IAC valve, the coolant temp sensor, fuel pump....etc. One knowledgeable fellow suggested an "Idle Re-learn" sequence, which I'll try if it does it again. I know next to nothing about TPI, and any help from you TPI wizards out there would me greatly appreciated.
brightblue87iroc is offline  
Sponsored Links
post #2 of 2 (permalink) Old Jul 17th, 06, 08:53 PM
Senior Tech
ZZ_430's Avatar
Join Date: May 2001
Location: Houston, Texas
Posts: 4,491
Re: '87 IROC TPI idle stall w/air on

Sounds like you should take the IAC out and clean it. It could have a build-up of carbon on the pintle and the passage. You could clean with carb spray.

Also the throttle blades could be dirty around the edges and the back side of the shaft. It doesn't take much.

So basically, clean the throttle body and remove what they call "coking".

As far as an "idle learn" that usually applies to a motor with an Idle Speed Control motor. (ISC)

It is done with the motor at operating temp, go into diagnostics, and run at idle for a couple of minutes in gear, then turn AC on and run for a couple more, and then put back into park and turn off key.

And it isn't setting a code when the check engine light comes on, it could just be that under 400 RPM or so, the ECM sees no distributor signal. (Code 12)

Don ~ TC Member #15 ~
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Don't mess with Texas!
ZZ_430 is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Team Camaro Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Similar Threads
Thread Thread Starter Forum Replies Last Post
MAF TPI rough idle shuanm Engine 1 Mar 27th, 06 03:23 AM
stall speed tech mmcillece Performance 0 May 15th, 05 08:35 PM
Holley tuning? railing68 Performance 22 Feb 13th, 05 03:55 AM
Holley tuning question wizard67 Performance 22 Sep 20th, 04 04:05 PM
My 1st Big Cam/ Trying to adjust Carb/Low Vacuum PERKS67-396 Engine 20 Oct 4th, 02 09:14 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome