Notices
1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck
Sponsored by:
Sponsored by: Moser

ignition wiring issue

Thread Tools
 
Search this Thread
 
Old Oct 1, 2011 | 06:19 PM
  #1  
will2045's Avatar
will2045
Thread Starter
|
Junior User
Joined: Apr 2009
Posts: 73
Likes: 0
ignition wiring issue

so when i try and connect the positive of the battery the starter cranks over. any ideas?
 
Reply
Old Oct 1, 2011 | 06:25 PM
  #2  
devino246's Avatar
devino246
Post Fiend
Joined: Mar 2011
Posts: 8,501
Likes: 4
From: Lynchburg, VA
Sounds like a stuck starter solenoid.
 
Reply
Old Oct 1, 2011 | 07:36 PM
  #3  
will2045's Avatar
will2045
Thread Starter
|
Junior User
Joined: Apr 2009
Posts: 73
Likes: 0
Originally Posted by devino246
Sounds like a stuck starter solenoid.
its brand new
 
Reply
Old Oct 1, 2011 | 07:36 PM
  #4  
will2045's Avatar
will2045
Thread Starter
|
Junior User
Joined: Apr 2009
Posts: 73
Likes: 0
what tells the starter solenoid to disengage
 
Reply
Old Oct 1, 2011 | 07:41 PM
  #5  
devino246's Avatar
devino246
Post Fiend
Joined: Mar 2011
Posts: 8,501
Likes: 4
From: Lynchburg, VA
Originally Posted by will2045
what tells the starter solenoid to disengage
Ignition switch.
 
Reply
Old Oct 1, 2011 | 07:47 PM
  #6  
will2045's Avatar
will2045
Thread Starter
|
Junior User
Joined: Apr 2009
Posts: 73
Likes: 0
Originally Posted by devino246
Ignition switch.
brand new ignition switch too. so wiring between must be failing somewhere. any idea which wire it is on the solenoid that tells it to shut off?
 
Reply
Old Oct 1, 2011 | 07:50 PM
  #7  
montana_highboy's Avatar
montana_highboy
Post Fiend
Joined: Apr 2008
Posts: 8,261
Likes: 15
From: Big Sky Country
Originally Posted by will2045
its brand new
Could be bad right outta the box, happens all the time.
 
Reply
Old Oct 1, 2011 | 07:52 PM
  #8  
devino246's Avatar
devino246
Post Fiend
Joined: Mar 2011
Posts: 8,501
Likes: 4
From: Lynchburg, VA
Originally Posted by will2045
brand new ignition switch too. so wiring between must be failing somewhere. any idea which wire it is on the solenoid that tells it to shut off?
There isnt one that tells it to shut off, just one that activates it. If you look at the solenoid, you'll see a smaller wire that attaches to the switch. When that gets energized, the switch connects the two larger gauge wires and sends power to the starter. For some reason, that wire is energized all the time. Are you sure everything is hooked up correctly?
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

 Verdad Gallardo
story-1

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
story-2

2026 Shelby F-150 Off-Road: Better Than a Raptor R?

 Brett Foote
story-3

2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

 Michael S. Palmer
story-4

10 Most Surprising 2026 Ford Truck Features!

 Joe Kucinski
story-5

Top 10 Ford Trucks Coming to Mecum Indy 2026

 Brett Foote
story-6

5 Best / 5 Worst Ford Truck Wheels of All Time

 Joe Kucinski
story-7

Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!

 Joe Kucinski
story-8

Every 2026 Ford Truck Engine RANKED from WORST to FIRST!

 Michael S. Palmer
story-9

The Best F-150 Deal of Every Trim Level (XL through Raptor)

 Joe Kucinski
Old Oct 1, 2011 | 07:52 PM
  #9  
will2045's Avatar
will2045
Thread Starter
|
Junior User
Joined: Apr 2009
Posts: 73
Likes: 0
Originally Posted by montana_highboy
Could be bad right outta the box, happens all the time.
could be i guess but it had worked at first. then i did a bunch of work on the motor and now its being sketchy. is there a ground wire or something that shuts of the IS that I should check?
 
Reply
Old Oct 1, 2011 | 07:53 PM
  #10  
will2045's Avatar
will2045
Thread Starter
|
Junior User
Joined: Apr 2009
Posts: 73
Likes: 0
Originally Posted by devino246
There isnt one that tells it to shut off, just one that activates it. If you look at the solenoid, you'll see a smaller wire that attaches to the switch. When that gets energized, the switch connects the two larger gauge wires and sends power to the starter. For some reason, that wire is energized all the time. Are you sure everything is hooked up correctly?
theres two smaller wires. which one? and no lol im not sure, diagram?
 
Reply
Old Oct 1, 2011 | 07:56 PM
  #11  
meborder's Avatar
meborder
Moderator
10 Year Member
Photogenic
Photoriffic
Shutterbug
Joined: Jul 2011
Posts: 6,504
Likes: 652
From: Sioux Falls Area
Club FTE Gold Member
Originally Posted by montana_highboy
Could be bad right outta the box, happens all the time.
x2 ...

replaced mine just for good measure .... dam thing stuck on at a gas station. it was also shorted across the 's' and 'i' so it left relays on and killed my brand new battery.... bad out of the box, so dont rule that out.

unhook your starter cable, the one that goes from the solenoid to the starter, and then hook up your battery.

start chasing wires with your volt meter. 12volts on the wire that comes from the ignition switch says the problem is upstream of that.

12 volts across the solenoid with the wire from the igntion switch disconnected tells you the solenoid is bad.

start there and report back.
that's what i'd do

good luck
 
Reply
Old Oct 1, 2011 | 08:09 PM
  #12  
will2045's Avatar
will2045
Thread Starter
|
Junior User
Joined: Apr 2009
Posts: 73
Likes: 0
Originally Posted by meborder
x2 ...

replaced mine just for good measure .... dam thing stuck on at a gas station. it was also shorted across the 's' and 'i' so it left relays on and killed my brand new battery.... bad out of the box, so dont rule that out.

unhook your starter cable, the one that goes from the solenoid to the starter, and then hook up your battery.

start chasing wires with your volt meter. 12volts on the wire that comes from the ignition switch says the problem is upstream of that.

12 volts across the solenoid with the wire from the igntion switch disconnected tells you the solenoid is bad.

start there and report back.
that's what i'd do

good luck
will do thanks!!
 
Reply
Old Oct 1, 2011 | 08:26 PM
  #13  
ctubutis's Avatar
ctubutis
Moderator
15 Year Member
Liked
Loved
Community Favorite
Joined: Nov 2007
Posts: 22,415
Likes: 92
From: Denver Metro Area, CO
Club FTE Gold Member
From Franklin2's diagrams:



The ignition switch sends power to the small #5 wire (should be labeled S on the solenoid) when told to engage the starter motor, at which time the solenoid connects #3 and #6.

Remove that #5 wire from the solenoid and connect the battery; if the starter begins to turn, the solenoid is stuck inside so beat on it with a hammer to try to un-stick it and/or replace it (Chinese-made variants are known for being bad out of the box).

If the starter DOESN'T begin to turn, hook up the battery; attach that small #5 wire; if the starter begins to turn by connecting that #5 wire, you have an ignition switch or wiring problem.

The solenoid grounds through its body to the fender.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Roswell
Georgia Chapter
8
Feb 10, 2016 08:08 AM
vinnyd62
1987 - 1996 F150 & Larger F-Series Trucks
2
Jun 2, 2015 10:08 PM
Alabama1988
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
18
Sep 5, 2014 06:06 PM
DeanBob
1973 - 1979 F-100 & Larger F-Series Trucks
3
Apr 19, 2010 08:10 AM
F250GH
1961 - 1966 F-100 & Larger F-Series Trucks
6
Feb 4, 2009 08:52 PM




All times are GMT -5. The time now is 03:32 AM.

story-0
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-1
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-2
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-3
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-4
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE
story-5
Top 10 Ford Trucks Coming to Mecum Indy 2026

Slideshow: Here are the top 10 Fords coming to Mecum Indy 2026.

By Brett Foote | 2026-05-04 13:49:49


VIEW MORE
story-6
5 Best / 5 Worst Ford Truck Wheels of All Time

Slideshow: The 5 best and 5 worst Ford truck wheels of all time

By Joe Kucinski | 2026-04-29 16:49:01


VIEW MORE
story-7
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!

Slideshow: Ranking the 5 things owners love about their Super Duty and 5 things they don't

By Joe Kucinski | 2026-04-29 16:36:49


VIEW MORE
story-8
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!

Slideshow: Ranking all 12 Ford truck engines available in 2026.

By Michael S. Palmer | 2026-04-22 13:32:20


VIEW MORE
story-9
The Best F-150 Deal of Every Trim Level (XL through Raptor)

Slideshow: The best Ford F-150 deal for every trim level (XL through Raptor)

By Joe Kucinski | 2026-04-21 15:59:01


VIEW MORE