Sep 21, 2015, 03:49 PM
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XJ Ask the Question Thread
CF Veteran
Joined: Sep 2009
Posts: 6,322
Likes: 6
From: Summerville, Ga
Year: 1995
Model: Cherokee
Engine: 2.5 4 cyl.
Seasoned Member
Joined: Jun 2012
Posts: 380
Likes: 4
From: Vancouver BC
Year: 1998
Engine: 4.0
Herp Derp Jerp
Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
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.
Seasoned Member
Joined: Jun 2012
Posts: 380
Likes: 4
From: Vancouver BC
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.
Herp Derp Jerp
Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
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.
CF Veteran
Joined: May 2012
Posts: 3,242
Likes: 2
From: Colorado
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.
Moderator of Jeeps
Joined: Jul 2011
Posts: 21,029
Likes: 3
From: Frederick, MD from Cleveland, OH
Year: 1993 YJ Wrangler
Engine: 4.0 I6
CF Veteran
Joined: May 2012
Posts: 3,242
Likes: 2
From: Colorado
Year: 1992 Cherokee Sport
Engine: Bone-Stock 242
Seasoned Member
Joined: Jun 2012
Posts: 380
Likes: 4
From: Vancouver BC
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.
