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

Can't read codes any ideas?

Thread Tools
 
Search this Thread
 
Old Jul 24, 2006 | 08:39 AM
  #1  
z28fan's Avatar
Thread Starter
Staging Lane
 
Joined: Oct 2005
Posts: 68
Likes: 0
Default Can't read codes any ideas?

car is 97 trans am

The plug that is under the dash that you use the scan tool on. It does not seem to be sending any signal. Any ideas?

Someone installed aftermarket radio and some stupid under dash lights if that makes a difference.
Reply
Old Jul 24, 2006 | 08:50 AM
  #2  
brynnda's Avatar
TECH Fanatic
iTrader: (5)
 
Joined: Dec 2005
Posts: 1,005
Likes: 0
From: ORANGECOUNTY
Default

is the check engine light on?
Reply
Old Jul 24, 2006 | 09:06 AM
  #3  
02blutb's Avatar
Teching In
iTrader: (2)
 
Joined: Jul 2004
Posts: 41
Likes: 0
From: Texas
Default

it may be that you are using the wrong code reader. there are 2 types (dont remember the names) but one works on the older LT1's and another works on the new LT1's
Reply
Old Jul 24, 2006 | 09:21 AM
  #4  
brynnda's Avatar
TECH Fanatic
iTrader: (5)
 
Joined: Dec 2005
Posts: 1,005
Likes: 0
From: ORANGECOUNTY
Default

obd1 obd2
Reply
Old Jul 24, 2006 | 09:36 AM
  #5  
z28fan's Avatar
Thread Starter
Staging Lane
 
Joined: Oct 2005
Posts: 68
Likes: 0
Default

OBD 2 in a 1997 trans am.

yes the check engine light is on.

tha thing is I ran it through a scan tool myself and came up with no readings, So I took it to a friend who runs a mechanic repair shop, he had his scan tool - punched in the information (97, trans am, manual trans, etc) and his didn't come up with a reading either. What he thought was that it wasn't sending a signal out the plug.
Reply
Old Jul 24, 2006 | 09:44 AM
  #6  
mikes98z's Avatar
TECH Regular
iTrader: (9)
 
Joined: Jul 2004
Posts: 419
Likes: 0
From: Brandon, FL
Default

z28fan..check the fuse that says "cig lighter"...the port where the handheld scan tool runs off the same fuse....my 97 T/A had a blown fuse and the scan tool would not read it.

Good luck
Reply
Old Jul 24, 2006 | 09:48 AM
  #7  
z28fan's Avatar
Thread Starter
Staging Lane
 
Joined: Oct 2005
Posts: 68
Likes: 0
Default

Good idea- I don't think the lighters work either.

Be right back going into garage to check it.
Reply
Old Jul 24, 2006 | 09:53 AM
  #8  
z28fan's Avatar
Thread Starter
Staging Lane
 
Joined: Oct 2005
Posts: 68
Likes: 0
Default

Ok the fuse looks like it was blown, Now I have to see if I can get ahold of my parents to borrow the scanning tool.

Thanks for the info -

You know this forum is really great, lots of information and very helpful people providing it.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

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

 Verdad Gallardo
story-4

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

 Pouria Savadkouei
story-5

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

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

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

 Verdad Gallardo
Old Jul 24, 2006 | 09:57 AM
  #9  
mikes98z's Avatar
TECH Regular
iTrader: (9)
 
Joined: Jul 2004
Posts: 419
Likes: 0
From: Brandon, FL
Default

good luck, the board helped me find out about the fuse too..good to pass the info along.
Reply
Old Jul 24, 2006 | 10:22 AM
  #10  
Domestic Demon's Avatar
Banned
iTrader: (1)
 
Joined: Apr 2006
Posts: 373
Likes: 0
From: NJ
Default

Originally Posted by z28fan
Ok the fuse looks like it was blown, Now I have to see if I can get ahold of my parents to borrow the scanning tool.

Thanks for the info -

You know this forum is really great, lots of information and very helpful people providing it.
Thats the exact same problem my Cavalier had. I went to read the codes, and there was nothing. Turns out the Cigarette lighter and OBD port use the sae fuse, so I replaced it and problem solved
Reply
Old Jul 24, 2006 | 10:35 AM
  #11  
z28fan's Avatar
Thread Starter
Staging Lane
 
Joined: Oct 2005
Posts: 68
Likes: 0
Default

It works.

Except now it reads


PO441

Evap Emissons Control - Purge flow fault

What does this mean, is it serious? What do I have to do to fix it?

Last edited by z28fan; Jul 24, 2006 at 10:41 AM.
Reply




All times are GMT -5. The time now is 10:21 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