My 97 Jeep Grand Cherokee Laredo 6cyl 4wd heater quit working.?
My suv overheated and I fixed the hole in the radiator (stop leak)and did a complete radiator flush and still working fine. However a few days later my heater quit blowing hot air. It blows great just cool air. It happend all of a sudden and temperature gauge wasn't affected when this happend. What could be the problem?
Jeep - 8 Answers
Random Answers, Critics, Comments, Opinions :
1 :
Heater core going out. When you smell antifreeze coming out the vents it's about completely shot.
2 :
its the radiator again or the heating core...you might have a slow leak somewhere........
3 :
I have a Chrysler mini-van. Same manu of jeeps, and I had that problem when my coolants run low. Just that first.
4 :
The heater core is out when you flushed the radiator you may have stopped up the heater core it is a radiator underneath the dash board,good luck.
5 :
for some reason the hot water is not getting to your heater core. why did the radiator overheat in the first place, Could maybe be your thermostat, which could have caused your overheat. maybe the vaccuum line to the heater core valve, maybe the core itself is now plugged by the stop leak. if i could physicaly be there, I could maybe tell you!
6 :
You have an air pocket in the cooling system, or the thermostat is stuck open. If you suspect an air pocket, which might not show up for a few days, loosen the heater hose clamp nearest the thermos at and partly remove the hose. Leave the engine off, and remove the radiator cap. Observe the coolant level. Fill if needed until coolant is present at the hose. You might have a heater control valve, if so manually hold it open. Once coolant is present re-install the hose and clamp, fill the radiator until it is full. Also fill the overflow reservoir untill it is aboce full-cold. Re-check the overflow every once in awhile to make sure it stays full. This should correct the problem. If you end up changing the thermostat use the above procedure to bleed the system, or anytime you repair the cooling system.
7 :
2 things, you have a air pocket in your heater core or you have plugged the heater core with stop leak. hold both heater hoses and see if there both hot, if there not then go from there.
8 :
Christiano hit it the closest,what happened is when you put in the stop leak it clogged the heater core,along with any rust in the system. what you need to do is replace the radiator,stop leak and fix a flat are 2 items that should have never been invented. but any way when you replace the radiator unhook both heater hoses from the water pump and thermostat housing. have one going to something underneath the jeep to catch th coolant and crap that comes out. through the other one run water from a hose.what i do is get the female hose repair end and screw it on then clamp the heater hose on the end that slides in.after doing that for a minute switch heater hoses. repeat until all the crap is out of the heater core. then flush the entire cooling system just run a short hose from the heater hose fitting on the thermostat to the one on the waterpump. after that hook the heater hoses back up and have at it.
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