3.4 and what I think is a misfire... - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat
GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat

Go Back   GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat > GM Technical Discussion and Questions > Performance, Brainstorming & Tuning

Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

LinkBack Thread Tools Search this Thread
Old 07-26-2007, 09:34 PM   #21
Senior Member
True Car Nut
Join Date: Dec 2002
Location: Sauk Centre, MN
Posts: 5,459
Thanks: 0
Thanked 0 Times in 0 Posts
OLBlueEyesBonne is on a distinguished road

Have you gotten the plug wire rerouted so it doesn't short out on the o2 sensor wiring?
If not get that done and you will most likely see a change, although if it should be shorting at all times it is in contact with the car running.
Also, you might want to test the plug wires..... I had a 3 month old set go bad on my old 95 Bonneville SLE SC. Had a big misfire and was going to the track. I was away from home for the week so I didn't have my ohm meter or any tools so on a hunch I stopped at NAPA, pulled the plug wires off went in, and they just asked what yr, make, model, engine and gave me a new set. Went back out and put them on the car and immediately I saw increase in throttle response, and no more misfire.
I also suggest you ask if you can exchange for the thicker (8mm Series I vs 7.5mm Series II) plug wires. The SI rears won't have nearly as much slack as the SII'*, but will still fit without being overly short.
OLBlueEyesBonne is offline   Reply With Quote
Old 07-26-2007, 10:06 PM   #22
Senior Member
Posts like a Corvette
Join Date: Jul 2004
Location: Winnipeg, Manitoba, Canada
Posts: 1,445
Thanks: 0
Thanked 0 Times in 0 Posts
captainmiller is on a distinguished road

Misfire is cured. It is not an issue anymore. Just wondering about my KR situation.
captainmiller is offline   Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
2 and 5 cylinder misfire brendaabbott 1992-1999 1 07-25-2008 08:28 PM
Rough Idle, Foul rotten egg smell, Think 02? Think again. SSEBONNE4EVA General GM Chat 6 01-20-2008 04:18 PM
Did a LIM/UIM and 20 miles later have a Cylinder 4 Misfire famouslee99gt 2000-2005 5 01-06-2008 09:39 PM
Detonation and misfire problem ?? kidturbo 2000-2005 23 01-16-2005 01:43 PM
Shudder / Misfire around 55 mph and accelerating fuddyduddy121 1992-1999 14 04-03-2004 06:22 PM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 10:33 AM.