Heat Not Working In Jeep Cherokee There are two hoses coming to and from the heater core. they both should feel warm or hot to the touch with the engine on. if one of the hoses is hot, and the other one is cold, that is a pretty good indication that the heater core is clogged. if the neither hose has any heat, you may have air in the cooling system, low fluid, or low pressure. 2010 grand cherokee no heat. changed thermostat, heater cores is clean, no air in the lines hoses. there is no heat coming from any vent when turning the temperature control knob to hot. could be the blend doors are stuck. only other thing i can thihk of is to make sure that the coolant line heading into the firewall gets notably warmer when.
Jeep Grand Cherokee No Heat Youtube The heater may stop working in jeep cherokee due to low coolant level or air in the cooling system, clogged heater core, bad thermostat, faulty blend door actuator, bad water pump, dirty cabin air filter, bad blower motor, or hvac control unit malfunction. 1. low coolant or air in the cooling system. low coolant level or air in the cooling. J. jstrubberg. 2136 posts · joined 2010. #10 · jan 25, 2013. if the air was lukewarm at all the vents, then it's entirely possible that the heater core away the problem. if, as you said, it was only the drivers side, then replacing the core didn't do a thing and the issue will likely return. there is one heater core. Below are 13 of the most common reasons behind your jeep heater not working that you should be aware of: heater core difficulties. insufficient coolant. blend door actuator failure. dysfunctional thermostat. water leaks. contaminated coolant. water pump issues. melty blower switch. Jeep cherokee heater not working: how to fix. top up the coolant. replace the thermostat. fix the coolant hoses and tighten the clamps. check for radiator leaks. replace the faulty radiator cap. replace the thermostatic switch if faulty. flush the heater core’s internal passages. clean the heater core exterior.
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