Search found 2 matches

by StuckChuck
Fri Feb 21, 2020 9:34 pm
Forum: 2000-2005 (other than GXP)
Topic: Misfire cylinder 4 (P0304)
Replies: 2
Views: 1365

Re: Misfire cylinder 4 (P0304)

I triple checked the wires. I am unsure about fuel pressure. I believe it is okay, as all other cylinders work fine. I suppose it could be an icm. I have no way to the junkyard to get one yet though.
by StuckChuck
Wed Feb 19, 2020 7:55 am
Forum: 2000-2005 (other than GXP)
Topic: Misfire cylinder 4 (P0304)
Replies: 2
Views: 1365

Misfire cylinder 4 (P0304)

2002 Pontiac Bonneville SE. I was about to head to work, when I started the car, it sounded terrible. Bad missing, and some backfiring sounds at the valve cover area.

I recently changed plugs and wires, they were looking pretty rough. Replaced with AC Delco professional plugs, and Duralast Gold ...