Questions and Answers

Chevy Truck Runs Bad Warm Q. I have a 1988 Chevy Truck 4x4 that I've added newer Vortec heads, headers, under drive pulleys, hypertec chip, fuel pump, a few other bolt-ons and been rebuilt so it's like a new engine. My problem is it runs really good when the weather is cool out but when the weather is warm it doesn't run like I think it should.

Do I need to replace the computer or is it something simple like a sensor? It has the stock TBI fuel system.

Thanks for any help...

A. It could possibly be a bad intake air temperature sensor or coolant temperature sensor.