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

no power

Thread Tools
 
Search this Thread
 
Old Sep 7, 2011 | 08:35 PM
  #1  
RobMidd's Avatar
Thread Starter
Teching In
 
Joined: Nov 2010
Posts: 17
Likes: 0
Question no power

so i got a 95 z28 t56 built motor with all the goodies but all stock computer. i check the battery 12v's its a red top. so then i connect it put the multimeter meter on it and nothing but then check the grounds its grounded but no power to anything in the car so is the battery bad? is it shorting out or is there something thats pulling all the power ? i checked every fuse and breaker im very confused and my friend whos training to be a master tech and really good with cars came and looked at it and he has no idea so maybe you guys mite know something we dont
thanks for your time
rob
Reply
Old Sep 7, 2011 | 10:26 PM
  #2  
draggin97s10's Avatar
TECH Fanatic
iTrader: (2)
 
Joined: Mar 2009
Posts: 1,471
Likes: 0
Default

ignition fuse, ignition switch, check your voltage at the computer with the key on, check the power in the harness leading into the car with the key on ect. Check shbox.com for wire diagrams. By no means am i a electrical expert, i was ase certified in it but that doesnt mean ****. Its going to be trial and error brother.
Reply
Old Sep 8, 2011 | 12:22 PM
  #3  
RobMidd's Avatar
Thread Starter
Teching In
 
Joined: Nov 2010
Posts: 17
Likes: 0
Default

thanks man that's what ive been doing hope i get her running soon this is my first build so everything has been trial and error im use to it
Reply
Old Sep 8, 2011 | 12:30 PM
  #4  
96TransAmboosted's Avatar
TECH Fanatic
iTrader: (8)
 
Joined: Jan 2011
Posts: 1,550
Likes: 0
From: Pinellas Park Florida
Default

Originally Posted by RobMidd
so i got a 95 z28 t56 built motor with all the goodies but all stock computer. i check the battery 12v's its a red top. so then i connect it put the multimeter meter on it and nothing but then check the grounds its grounded but no power to anything in the car so is the battery bad? is it shorting out or is there something thats pulling all the power ? i checked every fuse and breaker im very confused and my friend whos training to be a master tech and really good with cars came and looked at it and he has no idea so maybe you guys mite know something we dont
thanks for your time
rob
He is going to have a hard time making money if he looks at you and says i have no idea.

I agree with dragging, K>I>S>S start with where you do and dont have power, when you turn the key does the PURPLE wire on the starter energize with power?
IF NOT
go under the dash drop the colume and probe the Ignition switch, does it have power and is it switching power? unplug it does the connector or switch look burnt or melted at all?

Get back with some results and we can go from there.
Reply
Old Sep 8, 2011 | 02:20 PM
  #5  
Big Al's Avatar
TECH Resident
iTrader: (1)
 
Joined: May 2005
Posts: 970
Likes: 1
Default

Originally Posted by RobMidd
so i got a 95 z28 t56 built motor with all the goodies but all stock computer. i check the battery 12v's its a red top. so then i connect it put the multimeter meter on it and nothing but then check the grounds its grounded but no power to anything in the car so is the battery bad?
rob
I'm lost. Does it have power at the battery or not? You can check the voltage at the terminal block just behind the battery. Use a test lamp if you have one. Lots easier.

http://shbox.com/1/starter_charging_95.jpg

You can pill the plug on the ICM and check for power there with the key on IF you have power to the terminal block.

Al 95 Z28
Reply
Old Sep 8, 2011 | 10:35 PM
  #6  
RobMidd's Avatar
Thread Starter
Teching In
 
Joined: Nov 2010
Posts: 17
Likes: 0
Default

ill take it apart tomorrow and let you guys know and yeah the battery has power but when i connect it it doesn't if that makes any sense at all i just know that i can still check grounds but idk whats going on i just need to rip it apart and check everything something must be blown
Reply
Old Sep 8, 2011 | 11:12 PM
  #7  
shbox's Avatar
TECH Veteran
15 Year Member
Liked
 
Joined: Dec 2008
Posts: 4,144
Likes: 61
From: Little Rock, AR
Default

Has the battery been tested? It can show 12v with a meter and not have any reserve capacity to run anything.
Reply
Old Sep 11, 2011 | 05:10 PM
  #8  
RobMidd's Avatar
Thread Starter
Teching In
 
Joined: Nov 2010
Posts: 17
Likes: 0
Default

i didn't know that could happen to the battery ill bring it to auto zone tomorrow
that sounds like that could be the issue
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Verdad Gallardo
story-1

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-2

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-3

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-4

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

 Verdad Gallardo
story-5

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-6

10 Camaros You Should Never Buy

 
story-7

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
story-8

Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0

 Brett Foote
story-9

10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever

 Verdad Gallardo
Old Sep 12, 2011 | 08:14 PM
  #9  
RobMidd's Avatar
Thread Starter
Teching In
 
Joined: Nov 2010
Posts: 17
Likes: 0
Default

shbox you were right the battery was the problem the guy at auto zone said that normal battery chargers cant charge optima red tops. so they charged it up for me, now i got power. time to put her back together !
Reply
Old Sep 12, 2011 | 10:12 PM
  #10  
shbox's Avatar
TECH Veteran
15 Year Member
Liked
 
Joined: Dec 2008
Posts: 4,144
Likes: 61
From: Little Rock, AR
Default

Cool.
Reply




All times are GMT -5. The time now is 12:17 PM.

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