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XJ Ask the Question Thread
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: Aug 2011
Posts: 1,994
Likes: 8
From: San Jose
Year: 89
Model: Cherokee
Engine: 4.0 I6
If I ran no lift and 35's my jeep would be taller, but only because I increased the ground clearance.
So I just puta RE 4.5 in superflex in my xj, I'm running 33x12.5 BFG A/T, I now need to get an alignment. Do any of you know if a local chain like Firestone or something will do an alignment on a lifted rig? Or should I just take the time and do it myself?
CF Veteran
Joined: May 2011
Posts: 1,458
Likes: 2
From: Glendale,Az
Year: 1990
Model: Cherokee
Engine: 4.0l 6Cyl
88 4x4 4.0 XJ
-Rough idle
-random rought throttle responses off green light/stop signs
-Runs smooth while accelerating after initial start to roll.
-Sometimes it almost dies when I let off the brake and give it moderate gas off a light, it will bog down for a split second like it died then take off as normal operation.
Heres what iv done in past 1000 miles with this issue not resolving it:
-New IAC.
-New adjusted TPS.
-Throttle set screw adjusted awhile back before this issue.
-New cap rotor plugs wires.
-Seafoam and Rena premium gas.
-Adjusted Transmission kickdown cable thing.
I was thinking possible map, oxygen sensor or cps. But I dont want to just throw $150 in sensors at it if I dont have to. Where should I start?
-Rough idle
-random rought throttle responses off green light/stop signs
-Runs smooth while accelerating after initial start to roll.
-Sometimes it almost dies when I let off the brake and give it moderate gas off a light, it will bog down for a split second like it died then take off as normal operation.
Heres what iv done in past 1000 miles with this issue not resolving it:
-New IAC.
-New adjusted TPS.
-Throttle set screw adjusted awhile back before this issue.
-New cap rotor plugs wires.
-Seafoam and Rena premium gas.
-Adjusted Transmission kickdown cable thing.
I was thinking possible map, oxygen sensor or cps. But I dont want to just throw $150 in sensors at it if I dont have to. Where should I start?
CF Veteran
Joined: Oct 2011
Posts: 1,812
Likes: 0
From: South Mills, NC
Year: 1998
Model: Cherokee
Engine: Rebuilt 4.0L I6
Ok its starting to get hot out here and the Jeep is running a little warm. Cam I run a 180° for the summer to keep it running cooler? It's already got a new radiator thermostat and water pump
Last edited by ccooper1234; May 8, 2014 at 04:24 PM.
Beach Bum
Joined: Jul 2011
Posts: 6,123
Likes: 22
From: Cape Hatteras, North Carolina
Year: 2000 WJ
Model: Grand Cherokee
Engine: 4.0
The ZJ fan clutch is what made the difference for me, after I replaced the entire cooling system.
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
If it overheats below 15mph, it's probably your fan clutch. If it overheats above 15mph, it's either your water pump, loss of pressure, or a blockage somewhere. If it overheats at all speeds, you have multiple problems.
CF Veteran
Joined: Oct 2011
Posts: 1,812
Likes: 0
From: South Mills, NC
Year: 1998
Model: Cherokee
Engine: Rebuilt 4.0L I6
Remember I can't run a ZJ fan clutch cause I have a 3 core radiator.





