1995 Saturn SC2 Coolant Light Blinks
Were you and are you loosing coolant?
When you say the rad light blinks is it the light that looks like a battery and thermometer?
If it is the coolant level light blinking and you are not loosing coolant you can try to clean the switch. It is located at the bottom of the coolant resevior. It is not detachable so you must remove the whole plastic tank. Pretty easy a bolt or two, a hose or two, and an electrical connector.
Take the tank to the kitchen sink and fill it with a mixture of automatic dish washing detergent (or any low sudsing detergent) and water. Then shake not stir it vigorously. Rinse and repeat.
Reinstall and see if it helps. The switch is a simple float switch but is not replaceable seperately. If the cleaning does not help you will have to replace the coolant tank. I would check the junk yard.
I agree that the coolant should have been changed. Another often neglected maintenence procedure is replacing the automatic tranny fluid/filter every 30,000 miles. Use only mobile 1 synthetic tranny fluid. Only takes 5 or 6 quarts. Up to 8 if it is way low.
Why is there a question on something being added to the coolant? Gm sealer tabs or ginger root tablets are added by the factory to help seal the system. They are mostly used on aluminum engines after replacing a water pump or 2 or more hoses. Not really necessary with a flush and fill but some shops do use them even then.
The safety inspections vary state to state in the US but will include items such as a serp belt and even fluid levels. The idea behind it is strictly safety. If a belt were to snap or derail in a turn you would loose all power steering assist. Could be deadly. It must have been pretty bad or you got a new/by the book inspection mechanic. Either way it is for [b:035df30756]your[/b:035df30756] Safety.
God luck and let us know. :)
Suggested Repair
If the coolant-level light blinks and coolant is not being lost, remove the reservoir, wash the non-serviceable float switch with low-sudsing detergent and water, then reinstall it. If cleaning does not help, replace the coolant tank. A worn serpentine belt can fail a safety inspection because a broken belt can cause loss of power steering.
Conversation Summary
The owner of a 1995 Saturn SC2 reports a constantly blinking radiator or coolant light despite no overheating, even after a coolant flush. The old coolant looked foamy, and the car also failed inspection because of the serpentine belt. The expert says the coolant change was reasonable, asks whether coolant is being lost, and recommends cleaning the reservoir float switch or replacing the tank if the level light continues blinking. A bad belt can fail inspection for safety.
