Question about 1999 Jeep Grand Cherokee

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Heater wont blow heat but A/C works fine....

Hi I have a 1999 Grand Cherokee Limited 4.7 and my heat went out completely. At first it was jus the passenger side but now it doesnt heat at all. A/C works fine but really dont need it right now. Trouble codes on climate control read 20,46,52, and 56. Is there way to bypass some sort of circuit or would it have to be replaced? Please help im FREEEEEZZZZIINNGGGG!!!

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  • sandersj_87 Nov 24, 2008

    I have a problem with my heat not working in a 1998 jeep grand cherokee 4.0L 4WD. The A/C works fine but my heat went out all of a sudden. Any suggestions?

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Go to engine compartment, locate heater control valve. It will have the heater hoses connected to it that pass into the firewall. Unhook actuation plunger on the control valve. This will allow the coolant to flow though the heater core at all times. Now you have heat. If you get too hot, you can control it by the hot/cold settings to adjust the heater door.

Posted on Nov 21, 2008

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