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CF Veteran
Join Date: May 2011
Location: va
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Year: 1996
Model: Cherokee
Engine: i-6 4.0
CF Veteran
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Location: Summerville, Ga
Posts: 6,322
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Year: 1995
Model: Cherokee
Engine: 2.5 4 cyl.
CF Veteran
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Location: Chickamauga Ga.
Posts: 3,493
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Year: 2000
Model: Cherokee
Engine: 4.0
Junior Member
Join Date: Mar 2012
Location: Grand Rapids, MI
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Year: 2000
Model: Cherokee
Engine: 4.0
Major Spark Plug Problem
Plug #3 out of a 2000 jeep cherokee 4.0L. The engine stopped running last night while towing a trailer. Check engine light came on blinking, sputtering started, ran very rough for about a mile, then died. Now I can't get it to turn over, even with the plugs removed. I have not tried to turn the crank manually, or back it up.
Plug looks like there is something loose in number 3, valve broke off or something. Anyway:
Worth trying to fix? What Do I do next?
Thanks for the help...
Plug looks like there is something loose in number 3, valve broke off or something. Anyway:
Worth trying to fix? What Do I do next?
Thanks for the help...
Junior Member
Join Date: Mar 2012
Location: Grand Rapids, MI
Posts: 42
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Year: 2000
Model: Cherokee
Engine: 4.0
additional info
The guys at the shop said if it won't turn over, start looking for another engine. It had 208,000mi so far.
Plug #3 out of a 2000 jeep cherokee 4.0L. The engine stopped running last night while towing a trailer. Check engine light came on blinking, sputtering started, ran very rough for about a mile, then died. Now I can't get it to turn over, even with the plugs removed. I have not tried to turn the crank manually, or back it up.
Plug looks like there is something loose in number 3, valve broke off or something. Anyway:
Worth trying to fix? What Do I do next?
Thanks for the help...
Plug looks like there is something loose in number 3, valve broke off or something. Anyway:
Worth trying to fix? What Do I do next?
Thanks for the help...
CF Veteran
Join Date: Sep 2009
Location: Summerville, Ga
Posts: 6,322
Likes: 0
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5 Posts
Year: 1995
Model: Cherokee
Engine: 2.5 4 cyl.
CF Veteran
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Location: Summerville, Ga
Posts: 6,322
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Year: 1995
Model: Cherokee
Engine: 2.5 4 cyl.
CF Veteran
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Location: Chickamauga Ga.
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Year: 2000
Model: Cherokee
Engine: 4.0
Pull the valve cover an oil pan, look for debris, pull the head and check out the cylinders, if a valve broke off, there are probably pieces of piston and valve in the oil pan.
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Join Date: Mar 2012
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Year: 2000
Model: Cherokee
Engine: 4.0
There has been a distinct rattle for quite a long time in the engine; however, once the engine warmed up, that always went away..
It started knocking quite bad, running rough when pulling onto the highway-- then a couple miles later when getting onto the off-ramp, it idled very rough- Since i was only a mile or two from home, i kept driving it.. then It sputtered, knocked, ran rough, stalled when I was going about 30mph. Then I got it started again and drove about a half mile, then it wouldnt turn over by the key and starter... it just clunks and everything goes dim (i have a good optima redtop less than a year old)
I let it sit on the side of the road about a half hour, then tried to start it again- it ran for about 3 seconds very rough.
Hasn't turned over again. I can try a wrench on the front crank, but Im not optimistic about it!
It started knocking quite bad, running rough when pulling onto the highway-- then a couple miles later when getting onto the off-ramp, it idled very rough- Since i was only a mile or two from home, i kept driving it.. then It sputtered, knocked, ran rough, stalled when I was going about 30mph. Then I got it started again and drove about a half mile, then it wouldnt turn over by the key and starter... it just clunks and everything goes dim (i have a good optima redtop less than a year old)
I let it sit on the side of the road about a half hour, then tried to start it again- it ran for about 3 seconds very rough.
Hasn't turned over again. I can try a wrench on the front crank, but Im not optimistic about it!
Last edited by ericsvb; 01-18-2013 at 11:43 AM.
CF Veteran
Join Date: Sep 2009
Location: Summerville, Ga
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Year: 1995
Model: Cherokee
Engine: 2.5 4 cyl.
There has been a distinct rattle for quite a long time in the engine; however, once the engine warmed up, that always went away..
It started knocking quite bad, running rough when pulling onto the highway-- then a couple miles later when getting onto the off-ramp, it idled very rough- Since i was only a mile or two from home, i kept driving it.. then It sputtered, knocked, ran rough, stalled when I was going about 30mph. Then I got it started again and drove about a half mile, then it wouldnt turn over by ignition.
I let it sit on the side of the road about a half hour, then tried to start it again- it ran for about 3 seconds very rough.
Hasn't turned over again. I can try a wrench on the front crank, but Im not optimistic about it!
It started knocking quite bad, running rough when pulling onto the highway-- then a couple miles later when getting onto the off-ramp, it idled very rough- Since i was only a mile or two from home, i kept driving it.. then It sputtered, knocked, ran rough, stalled when I was going about 30mph. Then I got it started again and drove about a half mile, then it wouldnt turn over by ignition.
I let it sit on the side of the road about a half hour, then tried to start it again- it ran for about 3 seconds very rough.
Hasn't turned over again. I can try a wrench on the front crank, but Im not optimistic about it!
Junior Member
Join Date: Mar 2012
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Year: 2000
Model: Cherokee
Engine: 4.0
I'll do that next. If I find pieces- is there any hope for repair? Can I replace valves as a novice-midlevel DIY mechanic? Im hoping the head isn't cracked, but it it is ill let everyone know.
I give me a couple hours and I'll post more info.
I give me a couple hours and I'll post more info.
CF Veteran
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Year: 2000
Model: Cherokee
Engine: 4.0
Id let a shop do the valves, if there's no damage to the block, then it's repairable. It just might not be economical to repair.
Last edited by bhennessee1; 01-18-2013 at 11:56 AM.
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Year: 1989
Model: Cherokee
Engine: 4.0
Well got the dimmer switch replaced, not rear running lights and front side marker lights still only come on when the dash lights are dimmed completely