tnts94z

Helping my uncle on this car. It will crank over fine, starts hard but after a little massaging of throttle will finally start. It runs fine until the temp get up to where the fans kick in , about 10-20 minutes. It then starts running very rough, and eventually dies and will not start again. It has new plugs, rotor, cap, map sensor. Icm tests good. It thru a 35 code for the iac. He has it on order. Any suggestions. I told him possibley a 02 sensor since it runs good until its warmed up, isnt that where the 02s kick in and send signals to the computor. Its a 91 Camaro with the 3.1 litre v6. thanks for any suggestions.

calaban

Possible your coil is getting hot and flaking out. That would explain why it only does it at temp.

cadaver Puncher

Check the electronic egr valve.
Open the hood look by your left hand near the coil and exhaust manifold. I put block-off plates on mine and just had it programed out of the memcal.