2002 pontiac grand prix se runs hot going up mountains

Asked by Guru7ZFJT Jun 05, 2020 at 10:59 AM about the 2002 Pontiac Grand Prix SE

Question type: Maintenance & Repair

My car runs hotter going up mountains when weather is cold or hot and in city
stop and go slow driving when it's warm outside. Both fans run properly.

2 Answers

18,695

It runs hotter because the engine is working harder or, in the case of slow traffic its not getting a good supply of cool air through the radiator. That's normal. As long as its not overheating everything is fine. Make sure your coolant level is at the full mark and motor on.

20

Check radiator when cold. Reserve overflow tank is not the one to check. My fluid went down for years until I found the plastic fittings in hoses by the thermostat were cracked and you couldn't see water leaking. less than $5 to fix.

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