Friend of mine at work has a 1999 Mazda Protege with a 1.8L 4 cylinder.
He recently had a code for a bad MAF sensor, so he replaced it. It seemed to run better, but now the car will not idle (ie have to drive it will two feet when off the gas/slowing down), and is throwing a code P0302, which means cylinder 2 misfire detected.
The plug wires are only a year or so old, he put new plugs in it at the same time. He took out the new plugs recently, cleaned them, and reinstalled with no change, then he took the old plugs back in, with no change.
any thoughts? things to look for??
thanks,
clay