1992 Chevy Lumina Low Coolant Light

When did it start? Did you do something before it started happening or was it completely random?

Last time you topped it off did you follow the proper coolant fill procedure?

Steve

It has been doing it for over a year or so. It is completely random. I can drive it all around the neighborhood on short trips and never see it. I know that there is coolant in both the radiator and overflow tank so I just kind of ignored it. I have had the cooling system flushed after it started thinking that maybe it would clean up the sensor or something, but that didn't work.

It usually seems to manifest itself after a highway drive for over an hour or so when the engine is nice and warm.

Does the sensor possibly need to be changed?

Thanks for the reply.

I had one of these doing this once and it was just cruded up with the junk from the pink anti-freeze. Drain your radiator down a little and clean the sensor about 3-4 below the radiator cap.

Replace the sensor in the tank. It is a common problem. You should be able to change it without draining the coolant. Just do it when it is cool....