09-21-2015, 03:49 PM
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06-17-2013, 03:15 PM
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Join Date: Jan 2012
Location: Baltimore, MD
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Year: 1999
Model: Cherokee
Engine: 4.0 I6 HO
Ain't that the truth.
06-17-2013, 04:45 PM
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Join Date: May 2012
Location: East bernard tx
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Year: 1990
Model: Cherokee
Engine: 4.0
I Have a 90 Jeep cherokee with A 4.0 Straight 6. It idles ruff and will die after a few min. I have replaced the Map, O2, Crank shaft position sensor, Injectors, spark plugs, wires, did a fuel treatment, did a leak down, and checked for vac leaks. I don't know what else to look at. If it helps it started running ruff after driving in the ocean. It was Stupid i know. So anything would help. thanks
06-17-2013, 04:48 PM
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Click on the "pink link" in my signature. Do #1 , 3, 4 and 7.
06-17-2013, 04:49 PM
Moderator of Jeeps
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Location: Frederick, MD from Cleveland, OH
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Year: 1993 YJ Wrangler
Engine: 4.0 I6
I Have a 90 Jeep cherokee with A 4.0 Straight 6. It idles ruff and will die after a few min. I have replaced the Map, O2, Crank shaft position sensor, Injectors, spark plugs, wires, did a fuel treatment, did a leak down, and checked for vac leaks. I don't know what else to look at. If it helps it started running ruff after driving in the ocean. It was Stupid i know. So anything would help. thanks
Listen to cruiser. He knows what he's talking about.
06-17-2013, 04:55 PM
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
06-17-2013, 04:57 PM
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Join Date: May 2013
Location: latham ny
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Year: 2001
Model: Cherokee
Engine: 4.0
my fuel mileage is awful on my 01 sport after putting on my 31' tires. what can i do to balance it out? i was only getting like 15 or 16 mpg to begin with
06-17-2013, 05:01 PM
::CF Moderator::
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
06-17-2013, 05:22 PM
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Year: 2001
Model: Cherokee
Engine: 4.0
06-17-2013, 05:25 PM
::CF Moderator::
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
06-17-2013, 05:28 PM
::CF Moderator::
Join Date: Aug 2011
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Then one of two things has happened. Your odometer read high before leading you to believe you were getting better mileage than you were, or you really do need to change your speedo drive gear because now it reads too low. Define "pretty much" as far as speedo accuracy now.