Hello,

My housemate has a 92 Skylark (3300) that stalls when the car is up to temp, coming to a stop. At first I thought it could be a bad ignition control module so I replaced that today. I thought at first it was the IAC valve, but that would happen even in neutral. We'll see if the ICM fixes it, but I was wondering if anyone has any other thoughts on the issue.

Also, his service engine soon light is on. Is there a way I can check the codes myself without having to go to the parts store? Is there somewhere I can jump the connections so the codes flash back at me?

TIA!

Yep. On GM vehicles 95 and older, they're all OBD-I, which means you can read the codes without a scan tool. Although I would recommend going to a shop and letting them run their scan tool on the car so that they can see the actual duty cycles for particular parts in question. But as far as checking the codes yourself, you'll see a port under the driver's side dash (typical location, actual location may vary). Once you're there, use a paper clip to jump the two terminals up the upper right hand side. From there turn the key to the "on" position, the check engine light will then begin to blink the codes at you. Each code will flash three times, with the first and last set of codes being a code "12". Everything in the middle are your problems. Example: - -- is a code 12, or --- -- would be a code 32 and so on and so forth. Hope that this helps you out.

I know this will sound weird but check the transmission! Welcome to the site!

I know this will sound weird but check the transmission! Welcome to the site!

I read about the trans having some sensor not kicking the car out of overdrive and causing it to stall. Good call! I'll see if it continues to act up for him!

TPS

Throttle positioning sensor.

My wagon did the same thing a while back, and seems to be common on those early 90s compacts.....