PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Miss fire issue

Thread Tools
 
Search this Thread
 
Old Feb 23, 2011 | 02:06 AM
  #1  
onebad400's Avatar
Thread Starter
Staging Lane
 
Joined: Oct 2006
Posts: 67
Likes: 0
Default Miss fire issue

I have a miss fire in one of the cylinders I believe, car stubles to about 3500 and then comes to life, with no change in throttle postion. How would I go about chasing this down. Number 1 was missing after having it scanned at a shop but it was due to a loose plug. Ran fine before parking it for the winter and now the miss is back checked all plugs for tightness and they were good. Also no engine codes.

2000 trans am, Mods on car consist of rear o2 delete sims. headers, offroad y pipe, msd wires ngk plugs.t56 car

is their a hand held that can give me live cylinder by cylinder read out also looking to delete the emissions, can I delete the codes with a hand held?

Last edited by onebad400; Mar 5, 2011 at 05:33 PM.
Reply
Old Mar 5, 2011 | 05:32 PM
  #2  
onebad400's Avatar
Thread Starter
Staging Lane
 
Joined: Oct 2006
Posts: 67
Likes: 0
Default anyone

no help from anyone
Reply
Old Mar 7, 2011 | 08:23 AM
  #3  
Old Geezer's Avatar
TECH Senior Member
iTrader: (3)
 
Joined: Jun 2004
Posts: 5,639
Likes: 71
From: GA, USA
Default

Suggest you have some data logs done, and see what shows up. B4 I did the delete thing, I'd correct the problem[s].
Reply
Old Mar 7, 2011 | 01:41 PM
  #4  
bene's Avatar
Trunion King
iTrader: (16)
 
Joined: May 2006
Posts: 4,394
Likes: 3
From: Texan in Colorado
Default

Check for leaks, exhaust/intake.
Reply
Old Mar 23, 2011 | 10:15 AM
  #5  
onebad400's Avatar
Thread Starter
Staging Lane
 
Joined: Oct 2006
Posts: 67
Likes: 0
Default

hooked car up to a live scanner at the local shop, and after about 45 seconds of running cylinder 8 missfired 6 times. could this be something as simple as a bad plug?
Reply




All times are GMT -5. The time now is 08:53 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE