Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

Low volts to injectors

Thread Tools
 
Search this Thread
 
Old Oct 2, 2018 | 05:32 PM
  #1  
Philhippy45's Avatar
Thread Starter
TECH Regular
iTrader: (5)
 
Joined: Mar 2016
Posts: 458
Likes: 5
Default Low volts to injectors

When I turn the key to the start position my injectors only receive 1.5 volts and I can't seem to figure out why. At the fuse it gets 12.7. But at the injector its only 1.5. Why is this?

Last edited by Philhippy45; Oct 2, 2018 at 05:51 PM.
Reply
Old Oct 2, 2018 | 06:26 PM
  #2  
rpturbo's Avatar
TECH Addict
15 Year Member
Photogenic
Liked
Loved
iTrader: (47)
 
Joined: Nov 2008
Posts: 2,423
Likes: 223
From: A-Town, Ill side
Default

Probably a bad ground somewhere.
Reply
Old Oct 2, 2018 | 06:39 PM
  #3  
Philhippy45's Avatar
Thread Starter
TECH Regular
iTrader: (5)
 
Joined: Mar 2016
Posts: 458
Likes: 5
Default

Originally Posted by rpturbo
Probably a bad ground somewhere.
i played with the wires on run I get 1.5 volts but on crank I get between 10 and 11 now. But it still doesn't fire up.
Reply
Old Oct 2, 2018 | 06:42 PM
  #4  
G Atsma's Avatar
TECH Senior Member
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2016
Posts: 22,291
Likes: 3,616
From: Central Cal.
Default

Sounds like they're not getting juice on "RUN", but ARE on START(or cranking). While cranking, does it try to run?
Reply
Old Oct 2, 2018 | 06:49 PM
  #5  
Philhippy45's Avatar
Thread Starter
TECH Regular
iTrader: (5)
 
Joined: Mar 2016
Posts: 458
Likes: 5
Default

Originally Posted by G Atsma
Sounds like they're not getting juice on "RUN", but ARE on START(or cranking). While cranking, does it try to run?
it doesn't do anything on start besides crank. And why would I be getting only 1.5 on run? Fuel pump and iac have power. Also coil packs arnt working either. I measured it at the fuse box the one pink wire has 12v going to it on run but when you trace it it goes to the starter relay. The other pink wire that in the ing relay goes to The injector fuses but only has 1.5v. When I turn to start both pink wires receive 12v. So it seems that something will not let the other side of the relay to give the injectors 12v on run. But I tried new relays and nothing. Wtf is going on? There is also a black wire in there that has 12v as well seems to be all the time what is that for?

Last edited by Philhippy45; Oct 2, 2018 at 08:18 PM.
Reply




All times are GMT -5. The time now is 11:18 AM.

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