Question about Pontiac 6000

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I replaced the heater core. After fillling the coolant I bled all the air out that I could thru the bleeder screw at the thermostat housing. However I had no heat. Pulled the cover back off and the core was cold even though the inlet and outlet hose to the core were very hot. The core was hot on the end where the inlet and outlet feeder tubes are but the core itself was cold. Assuming there was an air lock in the core I removed it, filled the core with water carefully reinstalled, filled with collant bled any residual air and the whole core was now red hot. Put the covers back on assuming all was taken care of. The next morning as I drove to work very little heat. Have not removed the cover again (bad back by now) but suspect a cool heater core again which is the sesult of air in the cooling system getting back in the core blocking water flow. Nothing else makes any sense. Any ideas or suggestions?

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Some cars like cavalier and sunbirds grand am
were the rad is lower then the motor or heater core
needs to be vacumed fill to get all the air out
otherwise very little heat in heater system even if engine temp
runs up

Posted on Mar 31, 2011

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Posted on Jan 02, 2017

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I have a 1997 chrysler concorde I'm having problems with the heat it quit OK now me on Christmas day had it check out couldn't figure out the problem it started working again on its on about the mid of...


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1 open radiator cap fill coolant and put heater in hi heat
2 start engine and wait until you see the coolant start to circulate
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--------------------------------------------------------------------
or find the coolant bleeder screw, do 1 and 2
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1 Answer

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