2007 grand prix misfire
I have a 2007 pontiac grand prix, the car misfires a little(not
enough to throw a code) on cylinders 3 and 6, it does have
slight misfires on others but mainly these 2. I have already
replace the spark plugs, wires, the coil packs, and the control
module for the coil packs. It has a relatively new air filter as
well, maybe 10k miles on the filter. The car does have 165k
miles on it.