Heat in '98 Cherokee blowing cold air - JeepForum.com

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post #1 of 2 Old 12-28-2012, 01:18 PM Thread Starter
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Heat in '98 Cherokee blowing cold air

I have a 1998 Cherokee 4.0 and I recently replaced the the radiator, however, now my heater/ac only works on the highest setting and in the warm setting the heat is only luke warm for about 5 minutes then it just blows chilly air. Any suggestions on what might have happened to my heat?

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post #2 of 2 Old 12-28-2012, 04:29 PM
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1988 XJ Cherokee 
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If your fan only works on High, you likely toasted the blower motor resistor. If you search the forum on "blower motor resistor", you'll find a ton of threads.

Make sure your radiator is full. Air gets trapped and can take a bit of running to purge out. If the coolant level is low, you won't get much heat.

Other suspect is the blend door control. Another term to search on.
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