Backfire and Miss
May 7th, 2011, 5:40 PM
#1
CF Beginner
Thread Starter
Join Date: Apr 2011
Posts: 7
Likes: 0
Received 0 Likes
on
0 Posts
Backfire and Miss
1999 chevy silverado LS Z71 1/2 ton 4x4 5.3 eng. I have a backfire and Miss when hard throttle or pulling a grade on a highway. Check Engine Light On Too! Changed plugs and useing the E3 plugs, it ran great for 4 months and this problem has arrived... Thanks for the help! Clay
May 13th, 2011, 7:27 PM
#3
CF Beginner
Thread Starter
Join Date: Apr 2011
Posts: 7
Likes: 0
Received 0 Likes
on
0 Posts
Cleared codes but they were P0300 Random cyl. misfire and P0332 Knock sensor 2 circuit low input bank 2...... I bought AC Delco plugs today n will install soon.. After clearing codes it does run better but still misses n backfires when getting on it or pullin a grade on hyway. Thanks for the help...
May 20th, 2011, 6:29 PM
#6
CF Junior Member
Join Date: Feb 2010
Location: Texas
Posts: 57
Likes: 0
Received 0 Likes
on
0 Posts
mine did a similiar thing when i installed bosch oxygen sensors. problem disappeared when I replaced them with AC Delco brand oxygen sensors.
glad you got it figured out.
glad you got it figured out.
Thread
Thread Starter
Forum
Replies
Last Post
briefox89
Silverado & Fullsize Pick-ups
1
December 29th, 2010 12:51 PM
survivaldog
Silverado & Fullsize Pick-ups
2
December 7th, 2008 4:44 PM
rustedduck
Silverado & Fullsize Pick-ups
0
October 3rd, 2008 10:45 AM
