Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Hello, my name is Bobby. Thank you for the question. The most common cause of this on this engine is the ignition control module. When it begins to fail it is very prone to having poor readings in high heat conditions. It is located in the distributor housing. If you remove it you can have it tested at most auto parts stores for free. If it gets really hot during testing then it is the problem. If not then it may be a failing MAP sensor.