Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

change plugs and now car problem

Thread Tools
 
Search this Thread
 
Old Mar 23, 2010 | 08:30 PM
  #1  
mikemunoz's Avatar
Thread Starter
TECH Apprentice
 
Joined: Feb 2009
Posts: 313
Likes: 0
From: Harlingen, Tx
Default change plugs and now car problem

Well my mods are in my signature, I had on NGK TR5 gaped at.52 or something, I changed over to NGK TR6s gaped a.35 since I'm on a nitrous tune.but now my car is running funny it feels like its running on 6 or 7 pistons but it idol it idol fine but then again its cammed. Can anyone help me. Can it be the gaping of the plugs?
Reply
Old Mar 23, 2010 | 09:05 PM
  #2  
Bo's 98 TA's Avatar
Launching!
iTrader: (4)
 
Joined: Jan 2009
Posts: 223
Likes: 0
From: Oklahoma
Default

If there not gaped right it won't run right.
Reply
Old Mar 23, 2010 | 11:32 PM
  #3  
Duffster's Avatar
11 Second Club
iTrader: (103)
 
Joined: Aug 2005
Posts: 2,633
Likes: 1
From: South of West Point Iowa
Default

might be damaged spark plug wires. . .
Reply
Old Mar 23, 2010 | 11:43 PM
  #4  
Jon@Texas-Speed's Avatar
FormerVendor
iTrader: (18)
 
Joined: Sep 2004
Posts: 3,043
Likes: 2
From: Lubbock, TX
Default

I would check the plugs and make sure none are cracked or damaged. If everything looks good I would ohm out the wires to check and see if they are good or if one is bad. Make sure you get them all pushed on good. Doing this should find or resolve your problem.

Jon
Reply
Old Mar 25, 2010 | 09:07 AM
  #5  
mikemunoz's Avatar
Thread Starter
TECH Apprentice
 
Joined: Feb 2009
Posts: 313
Likes: 0
From: Harlingen, Tx
Default

Took the car to auto zone and the code p0357 came out meanting it can be coil,plugs,wires ect. I took the plugs to get tested and they are good. Any one got and idea what it could be, car was fine before the plug change.
Reply
Old Mar 25, 2010 | 10:09 AM
  #6  
Duffster's Avatar
11 Second Club
iTrader: (103)
 
Joined: Aug 2005
Posts: 2,633
Likes: 1
From: South of West Point Iowa
Default

Did you test the wires? Put the multimeter leads (one in both ends) and turn to your lowest resistance setting (under 100 ohms) and as you're watching the scale, wiggle the wire around and again, make sure you've got contact with the leads. If you have resistance changes alot, might have a bad wire there. Thats the cheap/easy test.

Good luck
Reply
Old Mar 25, 2010 | 10:25 AM
  #7  
SOMbitch's Avatar
TECH Senior Member
iTrader: (8)
 
Joined: Sep 2007
Posts: 6,881
Likes: 3
Default

How old are the wires? Sometimes handling old wires will cause them to break up. I had this happen on my truck when I did the plugs at 100K
Reply
Old Mar 25, 2010 | 11:44 AM
  #8  
FUN LS1's Avatar
TECH Enthusiast
 
Joined: Jul 2005
Posts: 732
Likes: 0
From: Herndon, VA
Default

Yeah, I replaced all the wires when I put new plugs in just to avoid this. You can pick up a set of Taylor Spiro Pros at TSP for less than $50...

http://texas-speed.com/shop/item.asp...d=229&catid=11
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Mar 25, 2010 | 12:40 PM
  #9  
mikemunoz's Avatar
Thread Starter
TECH Apprentice
 
Joined: Feb 2009
Posts: 313
Likes: 0
From: Harlingen, Tx
Default

Ithought it was the wires to so I went to go buy new ones and put them on still doing the same thing. Iam thinking it might be that the wires are not pushed all the way in.But I do hear the click when I do push the wires in. Can it be a bad coil and how can I test them.
Reply
Old Mar 25, 2010 | 02:48 PM
  #10  
BTL FED's Avatar
TECH Fanatic
iTrader: (9)
 
Joined: Jan 2002
Posts: 1,245
Likes: 0
From: DFW
Default

Originally Posted by mikemunoz
Ithought it was the wires to so I went to go buy new ones and put them on still doing the same thing. Iam thinking it might be that the wires are not pushed all the way in.But I do hear the click when I do push the wires in. Can it be a bad coil and how can I test them.
If you still have them put the old plugs back in and see if that makes any difference
Reply
Old Mar 25, 2010 | 02:53 PM
  #11  
99FormulaM6's Avatar
TECH Junkie
20 Year Member
Photogenic
iTrader: (21)
 
Joined: Aug 2004
Posts: 3,162
Likes: 0
From: Virginia Beach, VA
Default

move the coil to a different cylinder and see if the problem follows the coil. p0357 is the #7 cylinder
Reply
Old Mar 25, 2010 | 02:54 PM
  #12  
Joshiedoom's Avatar
12 Second Club
iTrader: (4)
 
Joined: Dec 2007
Posts: 1,712
Likes: 0
From: Between Bowling Green/Owensboro
Default

http://www.gearchatter.com/viewpost14099.php

Check the connections to the coil packs and look for visible wear. If none found, switch back to tr55s gapped and .050 and see if the problem continues.
Reply
Old Mar 25, 2010 | 03:04 PM
  #13  
cowboysfan's Avatar
12 Second Club
 
Joined: Mar 2005
Posts: 1,498
Likes: 0
From: Corpus Christi
Default

at idle spray a little water on each header tube a couple of inches from the heads, they all should evaperate quickly. if one is miss fireing or not fireing at all thats the bad cylinder. swap wires and repeat, if still same remove plug and check it or just replace it with new one. easier way if you have/get a laser temp gun...
Reply
Old Mar 25, 2010 | 03:12 PM
  #14  
06 SS's Avatar
TECH Fanatic
 
Joined: Jan 2007
Posts: 1,029
Likes: 0
From: LITH, IL.
Default

You talked about narrowing up the gap for a nitrous tune. Did you change the tune at the same time? It sounds like a fueling issue to me. Might be good for idle with the narrow(er) gap, but at higher RPM you are flooding it out.
Reply
Old Mar 25, 2010 | 04:16 PM
  #15  
mike171562's Avatar
TECH Enthusiast
iTrader: (4)
 
Joined: Feb 2010
Posts: 506
Likes: 1
From: Spring
Default

mine had to click twice when putting wires on the coils
Reply




All times are GMT -5. The time now is 10:43 AM.

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