4.3 vortec missing only at idle P0301
January 24th, 2012, 4:01 PM
#1
CF Beginner
Thread Starter
Join Date: Jan 2012
Posts: 3
Likes: 0
Received 0 Likes
on
0 Posts
4.3 vortec missing only at idle P0301
I can not seem to figure out my issue on this miss. its got new plugs, newer cap and rotor (GM) plugs are good, has newer fuel pump. i first resolved it by blocking off the egr and it ran smooth so i replaced. miss came back. vacuum is holding steady at 19lbs so i don't think i have a cylinder problems. any ideas? i need to sell this car. I actually have two of them. both had the same issue. egr fixed the other so far.
1997 jimmy 4x4 auto.
1997 jimmy 4x4 auto.
February 16th, 2012, 11:56 PM
#4
I had an issue similar to this after changing to the upgrade FI. lousy mileage was an added bonus. I finally had a Tech check it and all it needed was an O2 sensor. Afetr that Power was great and mileage went up to 20 from 14-16
Thread
Thread Starter
Forum
Replies
Last Post
halverson82
S-10 & Blazer
5
June 19th, 2011 9:51 AM
