2005 Jeep Grand Cherokee heat issue

Asked by Jan 14, 2016 at 09:37 PM about the 2005 Jeep Grand Cherokee Limited 4WD

Question type: Maintenance & Repair

Ok as a person who has worked on vehicles my
whole life, I am completely stumped. My 2005
Jeep Grand Cherokee Limited 4.7 V8 will warm the
engine and coolant as it should, but until I drive a
short distance (maybe a block or so) it will not
blow warm air in the cabin. Radiator hoses top and
bottom are warm and hoses to heater core are
warm. But until I actually drive it will not heat
inside. After I drive everything works as it should;
defrost, climate control, etc.  Anyone have an
idea??? Thanks

4 Answers


As these rigs are backwards flow the hot coolant comes in the bottom of the radiator and is forced up to the top, so it is critical that all of the air is out of the system. That being said my Grand Cherokee with the same engine does basically the same thing it will only blow just luke warm air until it is at full operational temp and the thermostat has opened. HTH

I checked and rechecked everything I could think of involving the actual cooling system. It all seems to be operating correctly. That being said I am obviously missing something ha ha


I don't think so, look how high the heater core is mounted and where the coolant has to come from, and then return. I thought mine had something wrong and I even went as far as replacing the water pump thinking it was either sucking air or the impellers were bad but it was fine and even after the new pump it still does it, I am going to change out the heater core this summer as now I am getting just a little whiff of coolant just after the thermostat opens but nothing leaking out the A/C drain yet so it is still just a small leak and my coolant level hasn't dropped. Who knows maybe that will fix it.

I just started having this problem with my 2005 Jeep Grand Cherokee. I always start it to warm up and defrost the windshield but this week the air blowing stays cold until I drive about 2 or 3 houses down. I'm wondering if it's related to a problem with the actuator which has been clicking a long time or thermostat though the engine temp is as it should be according to the gauge. So this is not an answer but just a comment.

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