misfires 2001 jeep cherokee sport 4.0?

kev242

New member
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 the cause?
What else could cause this problem other than the coil packs?
Could it be the Crank sensor or another sensor?
or is the coil pack the only thing?
I live in south florida and it has been very hot down here, my pool is 90 degrees without a heater.
 
Your coil packs are heating up and causing a short.Heat is what kills coil packs over time.And then they short out.I had the same problem but it started back firing before it took its toll beofre replacing [email protected]
 
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