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Why Jeep Cherokee XJS Commonly Stop Blowing Heat or Warm Air

Jeep Cherokee XJ 99 Classic
So for the past few months I bought my Cherokee back in September and I value hat had issues with the heat consistently. we changed out the thermostat we went back and forth about that really was cold or not. My Dad claims that the air was fine, because he drives a school bus and wears 3 layers of clothes everyday. He decided that when he got super cold that it was actually cold in there and blowing cold air and I was right. So the next thing that we try to do is we decide to flush the radiator and go through that and start ro do that. As you can see in the pictures attached the antifreeze was black kind of and brown and all of it was nasty we ran a peak brand antifreeze / radiator flush kit we did that yesterday I only drove around like an hour and a half because it was cold and I bitterly cold driving out no heat so today we tried it out again no heat so I guess now we have to try this water pump fix and see what we can do from there.

Want to know why your Jeep Cherokee XJ heat sucks? It’s not just needing to flush the radiator or heater core. It’s a small metal hose that serves as the life blood of heat. So I froze my ass off during this winter, I had a 97 Sport XJ and it had heat issues but they were only with the blower motor resistor. Michigan had a weird winter where it actually didn’t get extremely cold until about late January and early February. So while doing a gig job merchandising and driving all around, I had to have heat.

Radiator Flush-

So while it was still cold as hell and we couldn’t break out the hose because it would become frozen, but we flushed as best we could.

First time flushing the radiator in my 99 XJ Classic, the Antifreeze looked like chocolate milk. Ran a antifreeze flush and still no hotter heat. Plan on doing a more in-depth flush and cleaning this week. Further more the heat seems like it’s just as cold if not as cold as yesterday and it’s extremely annoying.

Looking into the Spiritual Guides on YouTube

So for the past few months I bought my Cherokee back in September and I value hat had issues with the heat consistently. we changed out the  thermostat we went back and forth about that really was cold or not. My Dad claims that the air was fine, because he drives a school bus and wears 3 layers of clothes everyday.  He decided that when he got super cold that it was actually cold in there and blowing cold air and I was right.

So the next thing that we try to do is we decide to flush the radiator and go through that and start ro do that. As you can see in the pictures attached the antifreeze was black kind of and brown and all of it was nasty we ran a peak brand antifreeze / radiator flush kit we did that yesterday I only drove around like an hour and a half because it was cold and I bitterly cold driving out no heat so today we tried it out again no heat so I guess now we have to try this water pump fix and see what we can do from there.

So that barely helped and then when I had extra money by a miracle my Water Pump went out and I had to with my dad brave the cold and actually do a proper flush. The best thing was that the weather broke and it was in the 40s, which allowed us to break out our hose and do a proper flush. CLR in the radiator and heater core busted out so much rust and rusty water flowed.

The biggest culprit  in all of this was the heater core in let hose, it was rusted shut and there was zero coolant flowing in and out of the heater core. However, in order to get the part I went to 3 different auto parts store to track down the heater in let hose. So when the water that’s flowing through your radiator and heater core over 20 years starts to clot. Your heater inlet hose rusts and captures all of it and sudden forms a blockage and stops your heater core from being able to function.

XJ Coolant System

As always more Jeep Cherokee XJ information and progress of my Budget XJ Build can be found at https://thejeepbank.com/

Also we have found that the XJ heater core is commonly issue prone.

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