login.php?sid=c09f0e3dd14e68aa10472a30f5f3c3ca profile.php?mode=register&sid=c09f0e3dd14e68aa10472a30f5f3c3ca faq.php?sid=c09f0e3dd14e68aa10472a30f5f3c3ca memberlist.php?sid=c09f0e3dd14e68aa10472a30f5f3c3ca search.php?sid=c09f0e3dd14e68aa10472a30f5f3c3ca index.php?sid=c09f0e3dd14e68aa10472a30f5f3c3ca Timeslip Database

FastGM.com Forum Index » Tech Questions » LS1 misfires on #'s 4,6,8 only when warm under load...?
Post new topic  Reply to topic View previous topic :: View next topic 
LS1 misfires on #'s 4,6,8 only when warm under load...?
PostPosted: Mon Sep 12, 2011 4:45 pm Reply with quote
buick85gn
GM fanatic
Joined: 08 Oct 2010
Posts: 90




Ok my trans am developed a lifter tick and i didnt mess with it for like a week. Decided to drive it a little to see how bad the tick was and all but after starting to drive it i began to get misfires from #'s 4,6,8 once the motor warmed up and was in gear. If i stop and put it in N or P it will clear up after a minute and rev like normal with no misfire. Go back to D and start to move...misfires. Any idea's on this? ANY help is greatly appreciated.
View user's profile Send private message Send e-mail
PostPosted: Mon Sep 12, 2011 7:58 pm Reply with quote
dstappity
GM fanatic
Joined: 20 Apr 2010
Posts: 976




might be bad coils once they get hot they might stop firing. I have a set off my gto you can try out, I believe they'll work on your harness.

Don't see how the neutral safety switch would have anything to do with it, might possibly be wires are touching under the dash maybe.

Check your grounds.
View user's profile Send private message Yahoo Messenger
PostPosted: Tue Sep 13, 2011 2:34 pm Reply with quote
Green to da Bean
Blastin' Heaps since 2000
Joined: 23 Feb 2006
Posts: 10219
Location: Sleasley, SC




Friend of mine's vette would misfire on all cylinders after it was warm, it was a ground.

_________________
Nice Video

"Old is a state of mind. I'm 29, I fuck college girls, work 70 hours a week, run 30 miles a week, and so far so good. I'm doing this until I die!"
-The Nightrain
View user's profile Send private message Send e-mail AIM Address
LS1 misfires on #'s 4,6,8 only when warm under load...?
FastGM.com Forum Index » Tech Questions
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You can attach files in this forum
You can download files in this forum
All times are GMT - 5 Hours  
Page 1 of 1  

  
  
 Post new topic  Reply to topic  


Powered by phpBB © 2001-2004 phpBB Group

Totally optional donation link to help pay for the hosting costs, via paypal:

This site is in no way, shape or form a representation of GM, GMC, Chevrolet, Pontiac, Buick, Cadillac, or any other GM division. This site is privately owned and operated for the enjoyment and support of its members. All Trademarks are the property of their respective owners which are not affiliated with, do not sponsor or endorse, and are not responsible for the content of this web site.