PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

CEL with no codes, won't start!

Thread Tools
 
Search this Thread
 
Old May 14, 2014 | 10:55 PM
  #1  
sweetC5's Avatar
Thread Starter
TECH Regular
 
Joined: Mar 2005
Posts: 457
Likes: 0
Default CEL with no codes, won't start!

So we rebuilt my brothers ls1 in his 99 TA. We can't get the engine to start, at first we had a po335 voltage issue with crank sensor. We installed new sensor, plug and wiring. Still no start, code is gone but the check engine light is still on. I test with a meter and we do have the proper ground and power to the sensor and with the code gone I don't think this is our problem.

We had a wire mixed up at the starter and arched the negitive to the battery untill we realized what we did this happened 2 times! What are the chances the computer is fried? Not sure what else to do, everything is plugged in and we are code free at this point. It seems like we don't have spark still. How can we have a CEL and no codes?
Reply
Old May 14, 2014 | 11:19 PM
  #2  
1FastBrick's Avatar
TECH Senior Member
15 Year Member
Liked
Loved
Community Favorite
iTrader: (16)
 
Joined: Apr 2007
Posts: 9,723
Likes: 629
From: JunkYard
Default

What are you using to check the codes?
Reply
Old May 14, 2014 | 11:24 PM
  #3  
sweetC5's Avatar
Thread Starter
TECH Regular
 
Joined: Mar 2005
Posts: 457
Likes: 0
Default

Scanner is a CAN OBDII
Reply
Old May 14, 2014 | 11:39 PM
  #4  
1FastBrick's Avatar
TECH Senior Member
15 Year Member
Liked
Loved
Community Favorite
iTrader: (16)
 
Joined: Apr 2007
Posts: 9,723
Likes: 629
From: JunkYard
Default

Can it read body codes???
Reply
Old May 15, 2014 | 01:01 PM
  #5  
autogeek23's Avatar
TECH Enthusiast
10 Year Member
Photogenic
Liked
iTrader: (13)
 
Joined: Apr 2011
Posts: 685
Likes: 15
From: Parma Heights,Ohio
Default

This is what I'm going through right now. No spark.
Reply
Old May 15, 2014 | 02:00 PM
  #6  
sweetC5's Avatar
Thread Starter
TECH Regular
 
Joined: Mar 2005
Posts: 457
Likes: 0
Default

Not sure, tried our other PCM and nothing. I checked the voltage to the pink coil, and the volts are dropping to 8 during cranking! Still no spark, checked with a old plug during crank.
Reply
Old May 16, 2014 | 12:39 AM
  #7  
1FastBrick's Avatar
TECH Senior Member
15 Year Member
Liked
Loved
Community Favorite
iTrader: (16)
 
Joined: Apr 2007
Posts: 9,723
Likes: 629
From: JunkYard
Default

You need a scan tool that can read body codes.

They are different from engine and transmission codes. Not all code readers or basic scan tools are capable of this.

Sound like it could possibly be an anti theft issue.
Reply




All times are GMT -5. The time now is 11:03 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