MY99TAWS6

iTrader: (3)

We scanned and did some tuning on buddies 2001 z28. The car is showing a lot of misfires on number six only. Mostly only at idle . We switched the plug wire and no effect. He put in new plugs and have not tried switching plugs or coil pack yet. So can't see anything other than plug or coil problem causing this.The car has obvious miss at idle. Car is also bucking and running terrible part throttle and getting very strange readings on one side for 02,and short and long fuel trims. Would assume his 02 is pooced on that side. Going to be replacing them soon.

sick01ws6transam

iTrader: (2)

mine is doing the same but replaced the o2 and didn't fix so if you get an answer please let me know!

Roadhouse

iTrader: (8)

Check the wiring to the coil, it could be the insulation has rubbed through and is shorting itself to the coil bracket.

MY99TAWS6

iTrader: (3)

We swapped out his rear 02s to the front and car is running fine. the misfire seem gone too. No idea why it was number six mostly.