Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

Crank fuse continually blowing, need help

Thread Tools
 
Search this Thread
 
Old Today | 07:21 PM
  #1  
86IrocJoc's Avatar
Thread Starter
Junior Member
10 Year Member
 
Joined: Jun 2013
Posts: 20
Likes: 0
From: Virginia
Car: 1986 Iroc
Engine: LB9
Crank fuse continually blowing, need help

Hello all. So my 86 IROC just suddenly started cranking and not starting. I checked to see if I was getting fuel and it is, I checked for spark and its got spark. So I decided to check my fuses for the hell of it and found my crank fuse blown. I replaced it and tried starting it again and she just kept cranking. I rechecked the crank fuse and sure enough it was blown. I checked all the wiring to the solenoid and it all looks fine, (as suggested by youtube.) I'm looking for any help for places to look to find the problem. Any help at all would be grately appreciated!!
Reply
Old Today | 08:53 PM
  #2  
vorteciroc's Avatar
Supreme Member
15 Year Member
Loved
Community Favorite
Top Answer: 1
 
Joined: Jul 2006
Posts: 2,872
Likes: 789
From: 212 is up in this Bit@#
Car: Resto-Mod 1987 IROC-Z Clone
Engine: Alky fed L92 Vortec Twin-Turbo 6.8L
Transmission: My own built/ design 4L80M
Axle/Gears: Custom 12 bolt (4.10:1)
Re: Crank fuse continually blowing, need help

Originally Posted by 86IrocJoc
Hello all. So my 86 IROC just suddenly started cranking and not starting. I checked to see if I was getting fuel and it is, I checked for spark and its got spark. So I decided to check my fuses for the hell of it and found my crank fuse blown. I replaced it and tried starting it again and she just kept cranking. I rechecked the crank fuse and sure enough it was blown. I checked all the wiring to the solenoid and it all looks fine, (as suggested by youtube.) I'm looking for any help for places to look to find the problem. Any help at all would be grately appreciated!!
If the Engine that originally came in your vehicle was a TPI Engine...

Then the Crank circuit is only used for the Cold Start Fuel Injector circuit (often referred to as the 9TH Fuel Injector).

There is an issue in that circuit; high resistance of the Cold Start Injector will definitely draw more current than that minuscule Fuse can handle.
Reply
Old Today | 09:49 PM
  #3  
86IrocJoc's Avatar
Thread Starter
Junior Member
10 Year Member
 
Joined: Jun 2013
Posts: 20
Likes: 0
From: Virginia
Car: 1986 Iroc
Engine: LB9
Re: Crank fuse continually blowing, need help

Ty for the quick reply! Its still TPI but I put a 350 in it after the 2nd 305 blew up in it. Shouldn't make a difference right?
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
<CHeVy_GiRL>
Electronics
3
Mar 25, 2025 08:56 PM
RandyFlip23
TPI
2
Feb 22, 2022 08:10 PM
motoman04
Electronics
2
Apr 30, 2015 12:32 AM
sparkplug619
Tech / General Engine
5
Mar 3, 2010 10:18 PM
pairtoe
Tech / General Engine
4
Jun 12, 2007 12:59 PM




All times are GMT -5. The time now is 10:57 PM.