Question about 2006 Pontiac Grand Prix
Heat not as good as it did before I have changed thermostat, had the water pump replaced (NEW NOT REMANED) temp is fine and it heats better when driving but when you slow down the heat cools.
When you have that problem , almost all the time is the heater core clogged , you can have the engine running until reach normal temperature and touch both heater hoses at the fire wall, if one is hot and the other is not them the problen is your heater core.
Posted on Apr 16, 2014
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Posted on Jan 02, 2017
Are you sure you got all the air out of the cooling system? Air pockets are very common problem when you do any work to the cooling system. An air pocket will do what you discribe.
Posted on Mar 18, 2009
Are the cooling fans coming on during normal operation? If your ac works turn it on and see if it overheats with ac on.If it does not overheat the fans are not operating properly under normal operating conditions.The ac will force the fans on. What you can do to start is just let the car idle in park and see if fans will come on normally. The coolant temp should reach 200-210 before the fans will come on. Make sure the air is off at this time. If we can verify the fans are working or not working properly we can go to the next step. Let me know what you find out.
Posted on Oct 08, 2010
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