Check engine light came on, told I need to change coils $2600, now still happening brought it in to another mechanic for diagnosis, told still misfiring in 2 cylinders. Back in the shop now.
had this problem first in 2009 and had the dealer misdiagnose the source and changed all my spark plugs. ( expensive deal on this car)... But that wasn't the problem, apparently! Since then a number of times the check engine light would come up & I would validate with my OBD2 device that it was cylinder 11 misfiring. I took the car to the dealer again who saw BOTH cylinders 11 and 4 misfiring and requiring coil change at a cost of ~ $2k/coil !! If that recurs again I am dumping this lemon...
Very often occurring problem
engine light on, misfire codes for 6 cylinders, turn engine on and off take care of the problem temperary and happen again, now happen all the time.
failure left side misfire. Codes 300, 307,308,--9,10,11,12.