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my jeep has been running really rough, it has misfire on cylinders 1,2 and 3. I changed the coil pack still having problems, found out the new coil pack was defective. I then tested the old coil pack and it works fine. I changed the spark plugs and cylinder 1 is still misfiring. cylinder 1 has...

Will the exhaust manifold or headers for a 1999 jeep cherokee 4.0L fit on my 2001 jeep cherokee 4.0L? I know that guys are using the 2001 4.0L intake mainfolds for 1999 and older cherokee with the 4.0L engine. I know that the 1999 exhaust manifold looks more like a header and is less restrictive...

my jeep fired instantly before this problem started. now i have to crank it over a few times before it starts. i have been smelling gas or something, diagnostic test showed misfires in cylinder 1,2,3. it idles really rough, when i take off from a light if i mash the gas it bucks severely, it...

i went to autozone and the diagnostic scan showed misfires in cyliders 1,2 and 3. i replace the plugs about 3 wks ago. everyone seems to think that it is the coil packs, the 2001 has a distributorless ignition and it has a bar with 3 coil packs on it that goes across all six spark plugs. i live...

I just had a diagnostic scan done on my 2001 jeep cherokee sport 4.0L: it showed misfires on cylinders 1, 2 and 3. it has a distributorless ignition system with a coil bar that has 3 coil packs on it. 1 for every 2 cylinders. i just changed the spark plugs about 1 month ago. what could be...