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XJ Ask the Question Thread
03-13-2013, 05:24 PM
Seasoned Member
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Location: Vancouver BC
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Year: 1998
Engine: 4.0
03-13-2013, 05:26 PM
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Year: 1998
Engine: 4.0
03-13-2013, 05:30 PM
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Year: 1995
Model: Cherokee
Engine: 2.5 4 cyl.
03-13-2013, 05:35 PM
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Year: 1998
Engine: 4.0
03-13-2013, 05:37 PM
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Year: 1998
Engine: 4.0
03-13-2013, 06:18 PM
Herp Derp Jerp
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Location: Parham, ON
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Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Vancouver? Cold? lol
Do you have an IR thermometer? I'd start by verifying the real temp at the thermostat housing, then checking your heater hoses. If one of the hoses coming from the firewall is hot and the other is rather cold you've got a blockage. I suppose your Renix XJ also has one of those pesky heater control valves too... maybe vacuum can fail on them and they don't operate?
Also follow up on the AC cycling. Pull the fuse and see what happens.
Do you have an IR thermometer? I'd start by verifying the real temp at the thermostat housing, then checking your heater hoses. If one of the hoses coming from the firewall is hot and the other is rather cold you've got a blockage. I suppose your Renix XJ also has one of those pesky heater control valves too... maybe vacuum can fail on them and they don't operate?
Also follow up on the AC cycling. Pull the fuse and see what happens.
03-13-2013, 06:27 PM
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Join Date: Jun 2012
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Year: 1998
Engine: 4.0
Vancouver? Cold? lol
Do you have an IR thermometer? I'd start by verifying the real temp at the thermostat housing, then checking your heater hoses. If one of the hoses coming from the firewall is hot and the other is rather cold you've got a blockage. I suppose your Renix XJ also has one of those pesky heater control valves too... maybe vacuum can fail on them and they don't operate?
Also follow up on the AC cycling. Pull the fuse and see what happens.
Do you have an IR thermometer? I'd start by verifying the real temp at the thermostat housing, then checking your heater hoses. If one of the hoses coming from the firewall is hot and the other is rather cold you've got a blockage. I suppose your Renix XJ also has one of those pesky heater control valves too... maybe vacuum can fail on them and they don't operate?
Also follow up on the AC cycling. Pull the fuse and see what happens.
Ill see if i can borrow a buddies IR thermometer.
( any other way to check if i cant get my hands on a IR ? )
And they both seem hot, although i was just driving for about and hour.
03-13-2013, 06:31 PM
Herp Derp Jerp
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Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Ohh sorry. Well for the hoses you could try grabbin' 'em. Best of luck on that one lol. No heater control valve on a '98 then.
Definitely pop the AC fuse and see what happens.
Definitely pop the AC fuse and see what happens.
03-13-2013, 06:35 PM
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Join Date: May 2012
Location: Colorado
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Year: 1992 Cherokee Sport
Engine: Bone-Stock 242
Vancouver? Cold? lol
Do you have an IR thermometer? I'd start by verifying the real temp at the thermostat housing, then checking your heater hoses. If one of the hoses coming from the firewall is hot and the other is rather cold you've got a blockage. I suppose your Renix XJ also has one of those pesky heater control valves too... maybe vacuum can fail on them and they don't operate?
Also follow up on the AC cycling. Pull the fuse and see what happens.
Do you have an IR thermometer? I'd start by verifying the real temp at the thermostat housing, then checking your heater hoses. If one of the hoses coming from the firewall is hot and the other is rather cold you've got a blockage. I suppose your Renix XJ also has one of those pesky heater control valves too... maybe vacuum can fail on them and they don't operate?
Also follow up on the AC cycling. Pull the fuse and see what happens.
03-13-2013, 06:36 PM
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Location: Frederick, MD from Cleveland, OH
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Year: 1993 YJ Wrangler
Engine: 4.0 I6
03-13-2013, 06:39 PM
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Year: 1992 Cherokee Sport
Engine: Bone-Stock 242
03-13-2013, 07:08 PM
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Year: 1998
Engine: 4.0
Nope just strait to the core. It seems like the core might be plugged up its only 46 bucks so if i have to replace it not such a big hole in the wallet.