1992 Chevy Lumina Temperature Gauge Rising

lumina

#1

When I start my car gauge start rising slowly and at high speeds it goes down to normal but rises again at slower speeds and gets back to normal…


#2

It sounds like it may be the radiator fan. Next time it is hot stop your car, turn the A/C off and check to see if there is a fan running.

Guess #2 would be the water pump. Has it ever been replaced? How many miles on the car now? Has the timing belt (assuming it does not have a timing chain)been replaced?

Other than the gauge is there any other indication of over heating? Have you checked the coolant level?


#3

Thanks a lot! I have looked at the fan and it is working. Topped up the coolant. I will watch and go to the next steps in a couple of days, Car has 102,000 miles and I am the second owner for the last 2 years. I do not know the age of water pump or thermostat.


#4

Has the coolant been flushed and filled in the last 2 years, or ever? If not, thats where Id start. If you can do it yourself, what Id do is get a bottle of Prestone Super Radiator Cleaner and follow the instructions.

Id also replace the thermostat if its more than a couple years old. Its cheap and easy to do. The thermostats on these cars dont seem to last very long, at least for me. Ive had a lot of GM V6s from this era.