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  #13  
Old 02-07-2012, 08:22 PM
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Re: 2005 3.7 misfire

Does it run fine sometimes and then randomly misfires?
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  #14  
Old 02-09-2012, 07:59 AM
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Re: 2005 3.7 misfire

Have you done a compression test? If you've been through the electronics and are certain everything is good, do a compression test.
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  #15  
Old 02-09-2012, 08:40 AM
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Re: 2005 3.7 misfire

I think he's done everything except the crank sensor and cam sensor.
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Old 02-09-2012, 12:16 PM
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Re: 2005 3.7 misfire

I am sorry but the most common misfire cause on the 3.7 that I see is cylinder integrity, valve properly seating or carbon buildup... 9 times out of 10 with a 3.7l misfire your looking at having the head removed to either replace the head or valves. That is if your not lucky and a de-carb doesnt work.

It may be a CKP or CMP sensor with an intermittant signal but the likelyhood of one of these sensors A: causing a misfire that is actually counted as a misfire and B: that it would count a misfire on the same cylinder repeatedly is just about slim to none... I am just saying typically it is as stated above.
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  #17  
Old 02-15-2012, 03:33 PM
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Re: 2005 3.7 misfire

alright im back again fellas i've replaced my coil , plugs and injector . still runnin horrible ! anyone got any ideas of what i should try next ?
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Old 02-15-2012, 03:43 PM
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Re: 2005 3.7 misfire

Crank and or cam sensor.
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Old 10-15-2012, 07:33 PM
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Re: 2005 3.7 misfire

Im in the same exact boat and this is my post bout it, maybe it will be helpfull since i have been thru a fuel injector and a watepump, hope it maybe helps you out. I know ive had a rough time trying to figure it out and like you i dont have the money to be just trying parts!
2005 Cherokee Misfire and using coolant?? - Jeep Garage - Jeep Forum
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