1991 Pontiac Sunbird Q&A
1991 Pontiac Sunbird Question: OVERHEATING
running without thermostat will cause it to overheat. if you drive it overheating you can bet you have done internal damage to the motor. hard to say what the problem is at this point. take it to a shop and have them check for a clogged radaitor and a leak down test on cylinders. Roy - mastertech6371
Its a 91 Pontiac sunfire since this has been happening I hear a rubbing noise can you please help?
A door window may move slowly or stop in mid travel due to a failing power window motor. The affected window may start working again after the motor cools off. Replacing the faulty window motor...
A coolant leak may develop from the water pump. The engine may overheat as a result of the coolant loss. A leaking water pump should be replaced.