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Old May 3, 2011 | 06:38 PM
  #1  
robby655's Avatar
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From: southern utah
Year: 1989
Model: Cherokee
Engine: 4.0
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so i have a 1989 cherokee "pioneer" with a 4.0l in it that is having some rough idle issues. so i called up my local 4x4 shop and they said this year didnt even come in a 4.0... so any info on this would be great! i am new to the 4x4 scene
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Old May 3, 2011 | 06:40 PM
  #2  
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From: Portales, NM
Year: 1989
Model: Cherokee
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I'm pretty sure they're full of baloney since I have one as well...
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Old May 3, 2011 | 06:45 PM
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From: southern utah
Year: 1989
Model: Cherokee
Engine: 4.0
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hmm the guy seemed to be in quite a rush so maybe he wasnt really paying attention. but i have changed air filter, plugs and wires and still am getting a rough idle.. hmmm? do we have check engine lights manz?
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Old May 3, 2011 | 06:48 PM
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From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
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Originally Posted by robby655
hmm the guy seemed to be in quite a rush so maybe he wasnt really paying attention. but i have changed air filter, plugs and wires and still am getting a rough idle.. hmmm? do we have check engine lights manz?
no 87 thru 90 are renix rea jeeps there is no check engine light or a way of accessing trouble codes by rough idle do you mean a stutter or idle goes up and down
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Old May 3, 2011 | 06:50 PM
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From: southern utah
Year: 1989
Model: Cherokee
Engine: 4.0
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well when starting it just is very hesitant... to a point where it almost dies just putting it into gear from park.. just no *****.. but its only like that sometimes
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Old May 3, 2011 | 06:53 PM
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From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
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search cleaning iac motor ,here the xj bible down load and enjoyhttp://www.filestube.com/537d2723635...ual-84-93.html
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Old May 3, 2011 | 06:54 PM
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From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
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oh and by the way i also have one of those rare 4.0s that are not in xjs
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Old May 3, 2011 | 06:54 PM
  #8  
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From: Everett, WA
Year: 1996
Model: Grand Cherokee
Engine: 5.2L
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Originally Posted by robby655
so i have a 1989 cherokee "pioneer" with a 4.0l in it that is having some rough idle issues. so i called up my local 4x4 shop and they said this year didnt even come in a 4.0... so any info on this would be great! i am new to the 4x4 scene
sounds like a typical auto parts store cashier
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Old May 3, 2011 | 06:55 PM
  #9  
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From: Havana fl
Year: 1995
Model: Cherokee
Engine: 4.0L
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check cap and rotor also? try fuel filter? check fuel pressure?
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Old May 3, 2011 | 06:58 PM
  #10  
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From: Salem Nh
Year: 1998
Model: Cherokee
Engine: 4.0
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Theres a write up on here on how to clean ur iac. Are u throwing an codes? have u tryed runnin seafoam throgh it

Last edited by jeepxj19; May 3, 2011 at 07:00 PM.
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Old May 3, 2011 | 07:06 PM
  #11  
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From: Tucson AZ
Year: 94
Model: Cherokee
Engine: 4.0
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My wife also has one of the nonexistent 89 pioneer 4.0s. Wouldn't take anything to that shop!!
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Old May 3, 2011 | 07:19 PM
  #12  
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From: southern utah
Year: 1989
Model: Cherokee
Engine: 4.0
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yeah what the heck. he sounded so sure of himself too! that kinda bugs me... specially cause its the only 4x4 shop in town!! haha ill try giving my iac a deep cleaning tomorrow in my auto tech class. any other suggestions? im kinda lookin in the dark without my precious obd2 (no codes!)
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Old May 3, 2011 | 07:20 PM
  #13  
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From: Salem Nh
Year: 1998
Model: Cherokee
Engine: 4.0
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Thats ok, a guy at my local advanced auto tryed telling me they didnt make wranglers in 96
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Old May 3, 2011 | 07:23 PM
  #14  
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From: southern utah
Year: 1989
Model: Cherokee
Engine: 4.0
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hey my jeep seems to also be running pretty hot for even just around the town driving... could these two problems be some how linked?
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Old May 3, 2011 | 07:26 PM
  #15  
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From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
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Originally Posted by robby655
hey my jeep seems to also be running pretty hot for even just around the town driving... could these two problems be some how linked?
not likely check the clutch fan out tomorrow
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