Question about Jeep Grand Cherokee
Hi expd, Moe here. Code P0300 means random misfire detected. P0301-303-304-305-306 indicate which cylinder is misfiring. P1391 means no definition. P0391 indicates cam sensor B Bank 2 circut out of range. It sounds like you have 2 cam sensors to check. Is this engine a v-6 or in-line 6 ? If you need a wiring schematic check with http://www.eautorepair.net/ . It seems you have multiple misfires but not all of them occur at the same time. Seems like sensors or bad wires to them. Rate if this helps. Moe
Posted on May 18, 2009
As you say it vibrates as well as misfires.after certain miles of running.this specifies that its the problem releated to timing chain as it gets streched after running the car for some time and then it starts misfiring and vibrating.
get the timing chain replaced at autozone or at dealer.you are absolutely right about timing chain issue creating this both problem in your jeep.
Posted on May 17, 2009
The misfiring is due to spark plugs problem
and vibration can be due to
#1 check the wheel tire balance weights the should not be over 1-2 ounces.
or 2)can be faulty torque converter , rear driveshaft and u-joints so replacing torque converter, rear driveshaft and u-joints and doing front end alignment could fix the problem.
as you have replaced the spark plug so ignore that check out other first before replacing.if every thing seems to be fine then its definately the timing chain faulty and needs replacement.
thanks. please do rate the solution.thank you for using fixya.keep updated.
Posted on May 17, 2009
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Posted on Jan 02, 2017
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