97 4runner Has a New Coil - prob solved
After the dealer replacing spark plugs repeatedly, they did finally check the coil more closely and sure enough, that was the problem causing the rough running and then fouling the plugs. I think some dealer auto techs are too familiar with hookin up...
My 97 Runner runs rough, like stuttering, when asked to go full throttle. One mechanic replaced plugs/wires... better for 300 miles then gradually got worse again. Drove for 5000 miles with same problem and check engine light on. Dealer then diagnosed and replaced plugs/wires again. Better...
