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1971 eldorado 1999 deville
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8 Posts
Discussion Starter #1
my water light is on in the instrument panel on the dashboard. radiator is full and also the reservoir. any ideas what the issue could be?
 

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2003 Deville base, 69 Eldorado, 68 Impala, If I tell you the rest......well....
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492 Posts
Test your thermostat in boiling water, does it open all the way (the spring compresses) at the thermostat temp. If not get a new one. Check the temp sensor wiring, or could be the sensor.

Make sure you have circulation in the cooling system, water pump flow and it's not actually overheating. Having a infrared temp gun is a good tool for old cars, then you can check/verify temp of of the whole motor, heads, upper/lower rad hoses etc.
 
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