Question about 2000 Pontiac Grand Prix

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The low coolant light keeps flashing.I just had it flushed and it still flashes.What else could it be?

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Low coolant sensor could be bad, Air in cooling system, needs to be bled.

Posted on Nov 11, 2010

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Why is the low coolant light flashing?


The low coolant light is operated by a level sensor located in the coolant reservoir itself. If the low coolant light is on and the coolant level is full then wither the sensor is unplugged or the sensor is bad.

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My low coolant light flashes on and off then it will stay on.I have checked my coolant level it is good what could be the problem? 1999 Buick regal


Make sure you are checking the coolant level in the radiator as well as in the overflow tank. The sensor is located in the radiator, so if the level in the overflow tank is good, it could still be low in the radiator.

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1 Answer

Flashing Coolant Light + 1


this sounds like you may need to replace your oil cooler and to empty your water tank just take the outlet pipe off and flush it out with a hose pipe and on the radiator there should be a bolt at the bottom to drain it I would drain it all and refill it and see if it does it again if so it could be your oil cooler if this car has one if it doesn't then it could also be a crack in your head.

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