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Air in the radiator system

Raymond Callahan
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  • 3 months later...
kbrandsma Member

kbrandsma

Posted
Posted (edited)

Year and make of car? 

 

Open relief valve flap by moving it straight up (yellow arrow below shows it down) and drive bringing the temp up for a while.

Pic4.jpg

 

Another thought might be if you may have a diverter flap in the heater core that lost it's foam.  The flap diverts the air from the heater or from the air conditioner depending on what is called for.   Do you have grey/blackish bits of foam coming out of your vents or on the floorboard?  If there is no foam covering the flap the heat can't get diverted to the ductwork.

Edited by kbrandsma

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