LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Emergency!!

Thread Tools
 
Search this Thread
 
Old Apr 8, 2009 | 03:04 PM
  #1  
1slo_camaro's Avatar
Thread Starter
TECH Fanatic
15 Year Member
iTrader: (2)
 
Joined: Apr 2008
Posts: 1,169
Likes: 1
From: Born/Raised North East, MD Lived in VA, NC, MI Back in Yorktown, Va
Default Emergency!!

i think either my fuel system is bad or my ign. is bad. here is the story, my car will just randomly shut off. and not wanna start back up for a few minutes after a lot of cranks. and the car will missfire sometimes and other times it will be fine. it doesnt happen at any specific time. so here is what ive done. i have a brand new ign. coil, ign module, fuel filter. the MSD opti cap and rotor has less then 3k on it. plugs the same. and the wires are a lil older. injectors, FP regulator and pump and stock from about 100k i believe. im about to go check my injectors to make sure they are getting the right voltage because on two injectors when i pulled the connector off them the motor didnt act any different.


does anyone know what kind of voltage i should see? please hurry
Reply
Old Apr 8, 2009 | 03:07 PM
  #2  
1slo_camaro's Avatar
Thread Starter
TECH Fanatic
15 Year Member
iTrader: (2)
 
Joined: Apr 2008
Posts: 1,169
Likes: 1
From: Born/Raised North East, MD Lived in VA, NC, MI Back in Yorktown, Va
Default

o yea before when it wouldnt start i sprayed starting fluid in the flaps and it didnt fire. so thats making me think is something ign wise. but its got new plugs coil module and opti. just not wires. does anyone think its the worse as what i think?
Reply
Old Apr 8, 2009 | 03:20 PM
  #3  
95zsean's Avatar
Teching In
iTrader: (1)
 
Joined: Oct 2007
Posts: 44
Likes: 0
Default

Ignition switch could be bad. Mine did funny things like start on only 3 or 4 cylinders. If you turn the key forward to when its about to start cranking and your Dash lights(engine ect.) go out thats a good indication it the switch. I've read and had a friend with a Jimmy that it would just quit and after MANY tries start again. There cheap but hard to get at. Here's a link to a great How To site: http://shbox.com/ignsw/ign_switch_repl.html

Good luck.
Reply
Old Apr 8, 2009 | 03:25 PM
  #4  
djjab57's Avatar
TECH Addict
15 Year Member
iTrader: (17)
 
Joined: Jul 2007
Posts: 2,496
Likes: 0
From: Texas
Default

the ignition switch is really pretty easy to change, just not very comfortable being on your back on the door hump
Reply
Old Apr 8, 2009 | 08:34 PM
  #5  
1slo_camaro's Avatar
Thread Starter
TECH Fanatic
15 Year Member
iTrader: (2)
 
Joined: Apr 2008
Posts: 1,169
Likes: 1
From: Born/Raised North East, MD Lived in VA, NC, MI Back in Yorktown, Va
Default

Originally Posted by djjab57
the ignition switch is really pretty easy to change, just not very comfortable being on your back on the door hump
HAHAHAH ive been there a few times. thanks guys ill check that out. i found a ground wire that was corroded and broke. so ima rewire it and see if it helps. also some injector cleaner and higher octane to see if maybe the injectors were clogged or anything like that. when i replaced the Fuel Filter the first lil bit of fuel looked almost brown. then it came out clear. like it was really dirty. so i dont suppose pulling the pump and replacing that. and has anyone ever cleaned, flushed, or vaccuumed out their tank? maybe there is some sediments in there. idk how but any chance of that?
Reply
Old Apr 8, 2009 | 09:51 PM
  #6  
myltwon's Avatar
TECH Addict
iTrader: (1)
 
Joined: Jul 2004
Posts: 2,965
Likes: 7
From: Palm Harbor, FL
Default

changing the ignition switch is gaaaaay, my back hurt for a day laying upsidedown in my seat

especially when you're stranded in a parking lot changing it at 8+ p.m.
Reply
Old Apr 9, 2009 | 12:50 AM
  #7  
1slo_camaro's Avatar
Thread Starter
TECH Fanatic
15 Year Member
iTrader: (2)
 
Joined: Apr 2008
Posts: 1,169
Likes: 1
From: Born/Raised North East, MD Lived in VA, NC, MI Back in Yorktown, Va
Default

Originally Posted by myltwon
changing the ignition switch is gaaaaay, my back hurt for a day laying upsidedown in my seat

especially when you're stranded in a parking lot changing it at 8+ p.m.
o0o0o0o0o0o0o0 no bro damn that sucks. luckily ill be able to lay a pillow down on my back lol. but everyone is thinking that it might be my ign switch. i havent done the lil test thingy yet. and will i have to get a specific cylinder because oof the VATS???
Reply
Old Apr 9, 2009 | 05:40 AM
  #8  
Formula350's Avatar
TECH Senior Member
iTrader: (3)
 
Joined: Oct 2006
Posts: 7,564
Likes: 4
From: Decatur, TN (N-W of Athens)
Default

Check battery connections and grounds first! Sounds like that to me, as its happened before heh
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 Apr 9, 2009 | 10:15 AM
  #9  
1slo_camaro's Avatar
Thread Starter
TECH Fanatic
15 Year Member
iTrader: (2)
 
Joined: Apr 2008
Posts: 1,169
Likes: 1
From: Born/Raised North East, MD Lived in VA, NC, MI Back in Yorktown, Va
Default

Originally Posted by Formula350
Check battery connections and grounds first! Sounds like that to me, as its happened before heh
well i found a ground. the one right on the front by the coil/module, was all corroded. i pulled the bolt out. ran a thread saver threw the block, took the bolt to a wire wheel and put a new wire end on the wires and still nothing.


im about to go check everything you guys have said and ill let ya know it anything changed.
Reply
Old Apr 9, 2009 | 11:19 AM
  #10  
SickSixSpeed's Avatar
On The Tree
 
Joined: May 2007
Posts: 133
Likes: 0
From: Pembroke Ga
Default

mine did this when it was real cold out.. i was runnin wayyy to cold of plugs and the extra fuel that was being put into the engine because of it being cold was causing it to crank, run for about five seconds, shut off and not crank for AWHILE.. idk what your climate is like or what plugs youre running just thought this might help.
Reply
Old Apr 9, 2009 | 05:36 PM
  #11  
1slo_camaro's Avatar
Thread Starter
TECH Fanatic
15 Year Member
iTrader: (2)
 
Joined: Apr 2008
Posts: 1,169
Likes: 1
From: Born/Raised North East, MD Lived in VA, NC, MI Back in Yorktown, Va
Default

well the car was fine untill it warmed up. well i replaced my wires today and the missfire is gone. so i gues the wires were just shot. but it hasnt shut off on me in the last day or so, so im just gonna consider myself lucky and just wait for it to happen again.
Reply
Old Apr 9, 2009 | 05:48 PM
  #12  
djjab57's Avatar
TECH Addict
15 Year Member
iTrader: (17)
 
Joined: Jul 2007
Posts: 2,496
Likes: 0
From: Texas
Default

Glad you got her fixed
Reply
Old Apr 9, 2009 | 05:49 PM
  #13  
Formula350's Avatar
TECH Senior Member
iTrader: (3)
 
Joined: Oct 2006
Posts: 7,564
Likes: 4
From: Decatur, TN (N-W of Athens)
Default

Originally Posted by 1slo_camaro
well the car was fine untill it warmed up. well i replaced my wires today and the missfire is gone. so i gues the wires were just shot. but it hasnt shut off on me in the last day or so, so im just gonna consider myself lucky and just wait for it to happen again.
mmm Yea. I really need to do wires on mine too. She stumbles at idle (in P or at a light) and it makes her seem unhealthy heh Glad it's working now though, could've been a bad wire that just went totally bad, taking you from mis-fire to NO-fire.
Reply
Old Apr 9, 2009 | 06:39 PM
  #14  
1slo_camaro's Avatar
Thread Starter
TECH Fanatic
15 Year Member
iTrader: (2)
 
Joined: Apr 2008
Posts: 1,169
Likes: 1
From: Born/Raised North East, MD Lived in VA, NC, MI Back in Yorktown, Va
Default

thanks guys.



but yea thats what i was thinking but i just cant fathom how 1 plug/wire being garbage would shut the car off.
Reply
Old Apr 9, 2009 | 07:50 PM
  #15  
Formula350's Avatar
TECH Senior Member
iTrader: (3)
 
Joined: Oct 2006
Posts: 7,564
Likes: 4
From: Decatur, TN (N-W of Athens)
Default

Originally Posted by 1slo_camaro
thanks guys.



but yea thats what i was thinking but i just cant fathom how 1 plug/wire being garbage would shut the car off.
Grounding perhaps and shorting (see: tripping) the pcm causing it to kill the car. I mention tripping because I figured they'd have a failsafe for something like overvoltage that would shut the car off to keep from damaging anything else. Then again a spark is just a few volts over the 14 the system runs at
Reply




All times are GMT -5. The time now is 12:09 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