View Single Post
Old 03-08-2009, 10:15 AM   #17
JL8Jeff
Hippy Mod, Bergermeister Meisterberger, Moderator
 
JL8Jeff's Avatar
 
Join Date: Aug 2004
Location: Ewing
Posts: 6,216
iTrader: (3)
Quote:
Originally Posted by Shownomercy View Post
Yea but if its not 02s, then you will ruin the new ones unless you figure out why its running weird...

I thought random misfire was a CPS failure?
Not necessarily, I replaced that as well and still got the P0300. Remember, the P0300 can start as a specific cylinder and then after multiple misfires on that cylinder will change to P0300. I actually saw the specific cylinder pop up one time before changing to P0300 so I swapped plugs and injectors with another cylinder and still had the problem. When my SES light would flash because it was happening, the car was running perfectly. So I think the 96 cars have an oversensitive computer. I think it reads a slightly lean condition and translates it into multiple misfire. Your car not starting when hot may not have anything to do with the misfires but a vacuum leak could through it off enough to mess up the mixture.
__________________
69 Z28 JL8 4 wheel disc brakes - being restored
09 Silverado Z71
JL8Jeff is offline   Reply With Quote