Question about 1997 Pontiac Grand Prix
.My low coolant light has been intermittently coming on and going off every 10 seconds or so. I added coolant and the light is still doing the same thing--I'm actually past the coolant level line now. Is there a way to re set this, or does it mean something bigger is wrong!
Sounds like your sensor unit in your coolant overflow tank. Like nearly everything man made that floats, they will eventually leak (become water logged). This is a relatively cheap fix, as long as the light is coming on and the coolant level in the overflow tank is between the MIN and MAX lines in the overflow tank. This means that the float in there is dropping below the actual fluid level (watter logged) and you need to get a replacement sensor unit (aka sending unit) for the overflow tank.
Otherwise, if the coolant level in the overflow tank IS BELOW the MIN level line on the tank, then you are losing coolant somewhere and that is when things start to get expensive (might be a radiator problem, head gasket, cylinder head, heater core, etc).
Posted on Jul 19, 2009
A lot of the time it will take a while for it to read it,but if it doesn`t go off(the low coolant light) install a new low coolant sensor,and it will take care of the problem.
Posted on Jul 19, 2009
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Posted on Jan 02, 2017
Tips for a great answer:
Inspect wiring harness for damage. Check for broken or chafed insulation.
Check for poor connection at the low coolant switch.
If fault is suspected to be intermittent, wiggling harness wiring may help in locating fault.
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