hey guys, my car has been misfiring for about 2 months now, so i took it to the nissan dealer and they said my tps was bad so i had them change it. i also put new plugs and replaced the coil packs with the ones that i had in my other max which ran great. the car is still misfiring in between 3-4k rpm. now the dealer is telling me that they don't know what it is and that they want to check the wiring harnessess that connect to the coil packs. they also checked all the sensors with a computer as the car was being driven and they all read fine, right voltage etc... would the seafoam treatment help me out in this mystery??
thanks for the help guys
Edgar

 

i think im going threw the same problem...when im in like 2nd gear and i doo i quick little like half throttle pull up to like 4 grand..i feel it break up really bad right between 3 and 4k i have no idea what it is but its driving me nutss!!