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Old 04-14-2019, 05:46 PM   #4
boibuddha
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The inconsistent heat sounds like air pockets in the cooling system.
Could be from a head gasket failure or a leak.

I would check the oil for any signs of mayonnaise or smell the coolant for exhaust gasses; both are signs of head gasket failure.
Also, an over filled coolant expansion tank is another sign of gasket failure.
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