2003 Pontiac Aztec is running hot. have changed the thermostat, water pump and sensor. what else could it be?

Asked by Jan 17, 2016 at 07:54 PM about the 2003 Pontiac Aztek AWD

Question type: Maintenance & Repair

6 Answers

37,905

Air possibly needing to be purged from the cooling system, Possible fans not working, Possible head gaskets.

3 out of 3 people think this is helpful.

Fans are working. How would I know if it's a head gasket?

37,905

If you do a compression test on each cylinder, 1 or 2 cylinders would be low in compression.

1 out of 1 people think this is helpful.

On the Head Gasket….if it's the gasket, wouldn't my oil be milky? Meaning, oil and water mixed together?

37,905

All depends where it is leaking from. Yes it can get into the oil, and thats the way it would look, but it could be by a water jacket hole,

2 out of 2 people think this is helpful.
37,905

....water jacket hole then only seep into the cylinder.

1 out of 1 people think this is helpful.

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