My 2000 jeep cherokee had a misfire
07-24-2011, 01:03 PM
#1
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Model: Cherokee
My 2000 jeep cherokee had a misfire
In cylinders 1,2, and 3. Is that likely a spark plug issue? My brother owned it for about 4 years and I have now had it for about 3 years. I have never changed the spark plugs and as far as he can remember he never did either.
Any help would be greatly appreciated.
Any help would be greatly appreciated.
07-24-2011, 02:35 PM
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Year: 99
Model: Cherokee
Engine: 4.0
crank sensor....after driving for a while, shut it off, and then start it again...does it idle rough and have trouble keeping rpms
07-24-2011, 08:11 PM
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Year: 2000.1999,1996
Model: Cherokee
Engine: 4.0
Most likely your problem is the dreaded #3 missfire (it will cause the two cylinders before it to show misfires) You can get a heat sheild for #3 fuel inj. at the dealer for around 5 bucks it was in a factory breifing for mechanics years ago,also get yourself some heat sheilding for plug wires to wrap all your injectors.Next do a complete TUNE- UP plugs ,plug boots and new springs ( the rubber boots on the bottom of coil pack) also have your coil packs checked. (As far as a cks no its not that.) check the air filter too.This should fix you up for another 7 yrs. My 2000 xj went 5yrs before I had to do a tune up then I wrecked that one.Good luck
07-24-2011, 08:48 PM
#7
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Year: 2000
Model: Cherokee
Engine: 4.0 I6
Change the spark plugs for sure.
If it is that dreaded cylinder #3 misfire, space the back of the hood with about 10 washers per bolt. Allows some better airflow, fixed it for me.
If it is that dreaded cylinder #3 misfire, space the back of the hood with about 10 washers per bolt. Allows some better airflow, fixed it for me.
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07-25-2011, 05:42 AM
#10
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Year: 1999
Model: Cherokee
Engine: 4.0
Gotta start with fresh plugs. NGK V-Power copper plugs gapped to .035 are a good choice for the 00-01 4.0 engine with the distributorless ignition.
See where you're at after that. Simple stuff first. Always.
See where you're at after that. Simple stuff first. Always.
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