GM Engine & Exhaust Performance EFI | GEN I/GEN II/GEN III/GEN IV Engines |Small Block | Big Block |

Help, Truck won't start, electrical issue.

Thread Tools
 
Search this Thread
 
Old Apr 12, 2006 | 08:38 PM
  #1  
TG02Z71's Avatar
Thread Starter
TECH Veteran
iTrader: (2)
 
Joined: Mar 2003
Posts: 4,134
Likes: 0
From: Wisconsin
Default Help, Truck won't start, electrical issue.

I was just changing the switch for my boost controller and forgot to disconnect the negative terminal first, now it will crank but the fuel pump is not comming on and the fuel gauge as well as a couple others don't move but still illuminate?
The security light in the message center flashed a few times , but I thought that was normal.
Been pulling fuses and checking a couple with a continuity tester and see that the fuel pump fuse does not show continuity, neither does another fuse.
Left my damm meter at work.
HELP please!!
I know it has to be something simple. DOHHH!!
Reply
Old Apr 12, 2006 | 08:46 PM
  #2  
dewmanshu's Avatar
Moderately Differentiated
20 Year Member
Liked
iTrader: (4)
 
Joined: Nov 2004
Posts: 27,563
Likes: 3
From: Maryland
Default

Uhm, no continuity means blown fuse. Replace the fuse(s) that don't have continuity!!
Reply
Old Apr 12, 2006 | 08:52 PM
  #3  
TG02Z71's Avatar
Thread Starter
TECH Veteran
iTrader: (2)
 
Joined: Mar 2003
Posts: 4,134
Likes: 0
From: Wisconsin
Default

Originally Posted by dewmanshu
Uhm, no continuity means blown fuse. Replace the fuse(s) that don't have continuity!!
These are the large block type fuses for the fuel pump and the daytime running lamps. I'll check a couple more on accesories that still work to see if they have continuity.
Reply
Old Apr 12, 2006 | 09:04 PM
  #4  
TG02Z71's Avatar
Thread Starter
TECH Veteran
iTrader: (2)
 
Joined: Mar 2003
Posts: 4,134
Likes: 0
From: Wisconsin
Default

The horn works and that fuse does not show continuity either, they must be switches/relays not fuses.
Anyway I found the bad fuse, it was the (ECM B-20amp) just to the left of the (F/PMP) relay or whatever the hell those things are.
It all works fine now, thank god!
Reply
Old Apr 12, 2006 | 09:18 PM
  #5  
TIM Z's Avatar
11 sec. Truck Mod
iTrader: (12)
 
Joined: Dec 2005
Posts: 9,736
Likes: 4
From: OH IO :(
Default

Glad to see your going to be able to sleep tonight!!!
Reply
Old Apr 12, 2006 | 09:33 PM
  #6  
TG02Z71's Avatar
Thread Starter
TECH Veteran
iTrader: (2)
 
Joined: Mar 2003
Posts: 4,134
Likes: 0
From: Wisconsin
Default

Originally Posted by TIM Z
Glad to see your going to be able to sleep tonight!!!
Thanks, I'm soo freaking releived right now. Starting pulling out all the test equipment for a night of serious horseshit!

What the hell does a (ECM B) fuse do anyway???
Reply
Old Apr 12, 2006 | 10:24 PM
  #7  
RoninsDenali's Avatar
TECH Regular
iTrader: (1)
 
Joined: Aug 2005
Posts: 493
Likes: 0
From: State College, PA
Default

ECM B, as far as i can remember powers the PCM (in conjunction with PCM 1) as well as the fuel pump itself. Atleast i remember someone saying the fuel pump. I'd check my wiring diagram, but its in my truck and its raining out
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
wrb002
PROJECTS GALLERY
18
Aug 31, 2015 12:00 PM
chevyl33
GM Engine & Exhaust Performance
6
Aug 24, 2015 08:21 AM
cams 98 silverado
GMT 900 Trucks General Discussion
7
Jul 31, 2015 07:36 AM
InsaneDomestics
Tuning, Diagnostics, Electronics, and Wiring
5
Jul 27, 2015 02:42 PM
black6spdz
Trucks and SUV Classifieds
9
Jul 16, 2015 01:32 AM




All times are GMT -5. The time now is 11:55 AM.