I bought a 1991 Camaro 3.1 v6 TPI two years ago out of a barn. As to be expected after staying in that barn for so long, rats had chewed wires under the hood and a few parts had gone bad... after working on the car for nearly a year, it was ready to drive.. or so we thought.

After I started driving the car on a regular basis, I noticed that it had an idling issue, especially during the hottest part of summer. As long as you're going down the road the car runs fine, but if you have to stop at a stoplight the RPMs start bouncing up and down, anywhere from 500-750 RPM. Unless you hold it on about 1500RPM, it will eventually flutter and die.

This issue has just about driven us crazy. It seems almost like it's flooding; the cooler the air is, the better it runs. We've tried changing the temperature coolant sensor and it seemed to do better for a while, but now (er, when I parked it for the winter) it's back to square one.

Sorry for such a long post. Any advice would be greatly appreciated... A friend mentioned that it could be the computer? Never messed with fuel injection much, so it's safe to say that we're a little lost.

 

Codes? My maf sensor on my old v6 caused these symptoms. It took sat for years.

 

Hope on over to the V6 part of this froum. May find alot more help over there.

A 3.1L is a MFPI Multi fuel port injection.

 

musicfreako: I've never had it scanned... Where is the sensor?
fasteddi: Didn't know there was a v6 board. Thanks for the tip.