09-21-2015, 03:49 PM
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XJ Ask the Question Thread
12-14-2013, 08:15 PM
CF Veteran
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Location: Mercer County, NJ
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Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
12-14-2013, 10:54 PM
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Year: 1992
Model: Cherokee
Engine: 4.0L
I've been having a problem where sometimes when I first start it the rpms go high then slowly come back down to normal. I cleaned the IAC to try to fix the problem. Now it won't start or idle unless I have the throttle partially open until it warms up. Did I do something wrong or is the problem somewhere else?
12-15-2013, 12:14 AM
Herp Derp Jerp
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Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Take a gander on here for a writeup on testing the TPS. The PCM uses the TPS to set IAC position.
I wouldn't be surprised that if, after 22 years of service, your IAC is junk.
I wouldn't be surprised that if, after 22 years of service, your IAC is junk.
12-15-2013, 05:04 AM
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Location: Frederick, MD from Cleveland, OH
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Year: 1993 YJ Wrangler
Engine: 4.0 I6
12-15-2013, 07:24 AM
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I still have my misfire. Haven't had the time to deal with it yet but here is my question. My xj runs "smooth" with the misfire until it hits over drive then starts really misfiring and shaking. Why does it do that? If I drive in the "3" position on the gear select it almost acts like there isn't any misfire.
So confuzzled!!!!!
So confuzzled!!!!!
12-15-2013, 07:30 AM
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Did you see the thread on OEM stats? Good stuff there on MotoRad/OEM vs Stant etc. Dealer for now. spend the $. I'm working on finding an aftermarket unit for less.
https://www.cherokeeforum.com/f2/oem...otorad-184645/
https://www.cherokeeforum.com/f2/oem...otorad-184645/
12-15-2013, 07:35 AM
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Year: 1993 YJ Wrangler
Engine: 4.0 I6
Did you see the thread on OEM stats? Good stuff there on MotoRad/OEM vs Stant etc. Dealer for now. spend the $. I'm working on finding an aftermarket unit for less.
https://www.cherokeeforum.com/f2/oem...otorad-184645/
12-15-2013, 07:41 AM
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
I still have my misfire. Haven't had the time to deal with it yet but here is my question. My xj runs "smooth" with the misfire until it hits over drive then starts really misfiring and shaking. Why does it do that? If I drive in the "3" position on the gear select it almost acts like there isn't any misfire.
So confuzzled!!!!!
So confuzzled!!!!!
12-15-2013, 07:45 AM
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Year: 1993 YJ Wrangler
Engine: 4.0 I6
12-15-2013, 08:10 AM
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Looks like good old Stant has gone the way of Fram. Drop the quality via out-sourcing, mass merchandise, and live off your old reputation and hokie advertising.
12-15-2013, 08:32 AM
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12-15-2013, 08:34 AM
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
12-15-2013, 08:37 AM
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Sorry it's a 2000 xj straight six. Cylinder head was replaced earlier this year and this last weekend I started getting a misfire on cylinder 3. Wrapped the injecter and fuel rail thinkin I had heat soak and still have it. Also as I stated I replaced the plug on cylinder 3 and it made no difference. Just the way it is acting while driving that I stated earlier had me a little confused
12-15-2013, 08:42 AM
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Sorry it's a 2000 xj straight six. Cylinder head was replaced earlier this year and this last weekend I started getting a misfire on cylinder 3. Wrapped the injecter and fuel rail thinkin I had heat soak and still have it. Also as I stated I replaced the plug on cylinder 3 and it made no difference. Just the way it is acting while driving that I stated earlier had me a little confused
Find a shop or store that carries BG 44K. Add a can to a full fuel tank. Run it down to 1/2 tank. Add gas back to Full. Run to 1/4 tank.