No Heat.....!
Senior Member
Joined: Sep 2008
Posts: 897
Likes: 12
From: Sioux Falls, SD
Year: 1999
Model: Cherokee(XJ)
Engine: 4.0L
Does yours have the stupid "Heater Control Valve" in the heater core lines? If so, go buy 3 feet of 5/8 heater line and 3 feet of 3/4 heater line and delete the valve.
You will also need to flush your heater core. It's probably plugged up if your XJ has that heater valve.
You will also need to flush your heater core. It's probably plugged up if your XJ has that heater valve.
Member
Joined: Oct 2017
Posts: 227
Likes: 10
From: New Mexico
Year: 1998
Model: Cherokee(XJ)
Engine: 4.0 L I6
Cherokees have notoriously bad heater cores, they go out a lot. When I bought mine the heater core was removed and the hose going into it just made a loop right back into the coolant system without going into the core. I think you can look and see if antifreeze is dripping green onto your passenger side floor mat. Replacing them is a pain because you have to take off all the dash to get at it.
CF Veteran
Joined: Feb 2016
Posts: 3,683
Likes: 8
From: Northern New Mexico
Year: 1999
Model: Cherokee
Engine: 4.0
Cherokees have notoriously bad heater cores, they go out a lot. When I bought mine the heater core was removed and the hose going into it just made a loop right back into the coolant system without going into the core. I think you can look and see if antifreeze is dripping green onto your passenger side floor mat. Replacing them is a pain because you have to take off all the dash to get at it.
Member
Joined: Oct 2017
Posts: 227
Likes: 10
From: New Mexico
Year: 1998
Model: Cherokee(XJ)
Engine: 4.0 L I6
Yeah I think you are probably right. I always seem to hear about them going out more on Cherokees though.
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Junior Member
Joined: Oct 2015
Posts: 36
Likes: 1
From: Florida
Year: 1994
Model: Cherokee
Engine: 4.0 6V S


