PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Dead Miss?

Old Sep 10, 2018 | 03:32 PM
  #1  
chevyss2008's Avatar
Thread Starter
Launching!
 
Joined: Jan 2016
Posts: 224
Likes: 1
Default Dead Miss?

I recently swapped the LS1 in my WS6 over to a LS3....The only things I used off the LS1 is the FI Adapters, coil packs and MSD wires. Every now and then it feels like a dead miss....Coming home last week it felt like I lost fuel or spark and felt flat, not hitting on all cylinders. I ordered 8 new EV1-EV6 adapters and changed those out....It did it again but this time, it would fall flat, then pick back up if I gave it a little throttle. Im replacing all the coil packs and plugs this week with new MSD....Any other idea what it may be besides those things listed? When it first did this it threw a code of P0200 which shows to be the ECM has detected a malfunction in the fuel injector circuit...the last time it did this (when it picked up after giving a little throttle) it did not throw a SES light....... The only other thing I could possibly think of is the ECU maybe?
Reply
Old Sep 10, 2018 | 04:11 PM
  #2  
truckdoug's Avatar
9 Second Club
10 Year Member
Liked
Loved
Community Favorite
iTrader: (26)
 
Joined: Nov 2013
Posts: 6,389
Likes: 558
From: Portlandia
Default

you got a data log of it doing that?
Reply
Old Sep 10, 2018 | 04:14 PM
  #3  
chevyss2008's Avatar
Thread Starter
Launching!
 
Joined: Jan 2016
Posts: 224
Likes: 1
Default

No, do not have anything to data log with. Its doing this intermittently...it done a few times in quick submissions the last drive and then ran fine all the way home...I drove it 10-15 miles and ran like a top...then had those quick hiccups and then ran fine...
Reply
Old Sep 10, 2018 | 06:59 PM
  #4  
truckdoug's Avatar
9 Second Club
10 Year Member
Liked
Loved
Community Favorite
iTrader: (26)
 
Joined: Nov 2013
Posts: 6,389
Likes: 558
From: Portlandia
Default

man it sounds like a classic intermittent ground or a sensor plug not fully seated. spend a dedicated 60 minutes examining each plug and making sure their seated right. follow grounds to the body and back of the heads.
Reply
Old Sep 10, 2018 | 09:46 PM
  #5  
qweedqwag's Avatar
11 Second Club
 
Joined: Dec 2016
Posts: 665
Likes: 5
Default

How are you converting the crank signal? Are you using the original ECU?
Reply


Thread Tools
Search this Thread

All times are GMT -5. The time now is 09:18 PM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
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-4
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-5
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-6
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-7
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-8
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-9
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