PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

engine code p1637

Thread Tools
 
Search this Thread
 
Old Sep 20, 2008 | 08:43 AM
  #1  
mmorellicamaross's Avatar
Thread Starter
On The Tree
 
Joined: Apr 2004
Posts: 148
Likes: 0
Default engine code p1637

running engine code p1637, generator l-terminal ciruit, what is this and how do you fix it?
Reply
Old Sep 20, 2008 | 09:55 AM
  #2  
2001NBMZ28's Avatar
TECH Senior Member
 
Joined: Dec 2001
Posts: 5,399
Likes: 3
From: Jacksonville, FL
Default

Check the red wire and connection to the alternator. More info here: www.gearchatter.com/viewtopic8959.php
Reply
Old Sep 20, 2008 | 10:59 AM
  #3  
mmorellicamaross's Avatar
Thread Starter
On The Tree
 
Joined: Apr 2004
Posts: 148
Likes: 0
Default

Thanks your probably correct I replaced the alternator about a month ago.
Reply
Old Sep 28, 2008 | 08:18 AM
  #4  
mmorellicamaross's Avatar
Thread Starter
On The Tree
 
Joined: Apr 2004
Posts: 148
Likes: 0
Default

should you be getting the test light to come on when you touch the red wire connection and if yes what could the problem be? when I touched the wire the ingnition was 3/4 of the way on. I get not light when I touch the wire but I am getting light when I touch other connections so I know I have good ground.
Reply
Old Sep 28, 2008 | 08:24 AM
  #5  
Engine_HP's Avatar
TECH Fanatic
iTrader: (1)
 
Joined: Jun 2008
Posts: 1,752
Likes: 9
From: Middle East.
Default

https://ls1tech.com/forums/showthrea...453&highlight=
Reply
Old Sep 28, 2008 | 08:25 AM
  #6  
Engine_HP's Avatar
TECH Fanatic
iTrader: (1)
 
Joined: Jun 2008
Posts: 1,752
Likes: 9
From: Middle East.
Default

is there any problems reading the ECT ?
Reply
Old Sep 28, 2008 | 08:49 AM
  #7  
mmorellicamaross's Avatar
Thread Starter
On The Tree
 
Joined: Apr 2004
Posts: 148
Likes: 0
Default

I have the connecter, does the alternator ground need to be grounded for a + test light when you touch the red wire connection?
Reply




All times are GMT -5. The time now is 09:55 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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
story-8
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0

The world was a better place when it was still around.

By Brett Foote | 2026-01-23 09:20:37


VIEW MORE
story-9
10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever

Slideshow: The 7.0-liter LS7 was designed for absolute cutting-edge performance.

By Verdad Gallardo | 2026-01-07 18:36:00


VIEW MORE