Notices
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

1986 f150 ignition problem?

Thread Tools
 
Search this Thread
 
Old Apr 27, 2003 | 09:37 PM
  #1  
jlieving's Avatar
jlieving
Thread Starter
|
New User
Joined: Apr 2003
Posts: 2
Likes: 0
1986 f150 ignition problem?

I hear a clicking sound when I turn the key on, but that's all that happens. The starter will run when I put a jumper across the solenoid. The battery is new and the solenoid is new. Any help please!! Could the relay be bad? IF so could someone tell me or lead me to some instructions as to how to replace it and or where this stuff is located. I don't have an owners or repair manual. Thanks in advance.
 
Reply
Old Apr 27, 2003 | 10:38 PM
  #2  
Franklin2's Avatar
Franklin2
Moderator
25 Year Member
Photogenic
Community Builder
Community Influencer
Joined: Jan 2001
Posts: 56,979
Likes: 2,734
From: Virginia
Club FTE Gold Member
1986 f150 ignition problem?

Will the starter run if you jump from the large battery terminal on the starter relay(solenoid) to the small terminal marked "s" on the starter relay(solenoid)? I am assuming you jumped across both big terminals?

If jumping to the small terminal makes the starter turn, then the starter relay(solenoid) is ok. Here's a short run down of the circuit.

Power comes off the starter relay battery terminal with some smaller yellow wires. These yellow wires eventually make it to the ignition switch. Turn the key to start, and power from the yellow wires is directed to the neutral safety switch on the tranny, or the clutch switch by a red/lightblue wire. This red/light blue then continues on back out to the starter relay where it hooks to one of the small terminals and activates the relay.
 
Reply
Old Apr 27, 2003 | 10:59 PM
  #3  
jlieving's Avatar
jlieving
Thread Starter
|
New User
Joined: Apr 2003
Posts: 2
Likes: 0
1986 f150 ignition problem?

I jumped to the small terminal on the solenoid and the starter worked so what else could be the problem? Would I still here a buzzing sound when the key is turned if the ignition switch is bad? or could it be something else?
 
Reply
Old Apr 27, 2003 | 11:08 PM
  #4  
steve83's Avatar
steve83
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
1986 f150 ignition problem?

If jumping from the battery terminal to the small relay terminal works, but the ignition switch doesn't, then it's definitely an ignition switch circuit problem. There are several wires & connectors involved, and so is the Neutral Safety Switch, but it's most likely the ignition switch that's bad. See how to replace it here.

Before you do that, though, try crushing the small terminal connector slightly (the one in the rubber "L" that slips on) so it grabs the terminal tighter.
 
Reply
Old Jan 31, 2005 | 09:17 PM
  #5  
tmooreagent's Avatar
tmooreagent
New User
Joined: Jan 2005
Posts: 3
Likes: 0
repeat

I am having a similar problem, except my ignition seems stuck on, I have to disconnect the main power line from the battery then turn the key to the "run" position then touch the power line to the solinoid terminal if I leave it hooked up the starter continues to turn over, I wanted to take a look at the link you provided but it tells me it is unavailable can you repost it or offer any other info???
 
Reply
Old Feb 1, 2005 | 08:08 AM
  #6  
FordTracMan's Avatar
FordTracMan
Senior User
Joined: Dec 2003
Posts: 166
Likes: 0
TMOOREAGENT
Your problem is usually caused by defective relay.
 
Reply
Old Feb 1, 2005 | 09:14 PM
  #7  
tmooreagent's Avatar
tmooreagent
New User
Joined: Jan 2005
Posts: 3
Likes: 0
I have already replace that, and no change. Any other ideas? Someone mentioned it may be the ignition control module, any comments?
 
Reply
Old Feb 4, 2005 | 08:01 AM
  #8  
FordTracMan's Avatar
FordTracMan
Senior User
Joined: Dec 2003
Posts: 166
Likes: 0
When the starter is cranking take the S wire off at relay[the small 90 degree connector].If it continues-BAD relay.If not probably bad ignition switch.
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

Top 10 Ford Truck Tragedies

 Joe Kucinski
story-1

AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

 Brett Foote
story-2

Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

 Michael S. Palmer
story-3

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

 Verdad Gallardo
story-4

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
story-5

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

 Brett Foote
story-6

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

 Michael S. Palmer
story-7

10 Most Surprising 2026 Ford Truck Features!

 Joe Kucinski
story-8

Top 10 Ford Trucks Coming to Mecum Indy 2026

 Brett Foote
story-9

5 Best / 5 Worst Ford Truck Wheels of All Time

 Joe Kucinski
Old Feb 13, 2005 | 02:04 PM
  #9  
tmooreagent's Avatar
tmooreagent
New User
Joined: Jan 2005
Posts: 3
Likes: 0
something else I noticed is that even if the key is in the "off" position the engine will still crank, but the engine won't actually fire until the key is in the "on" position, maybe the tumbler???
 
Reply




All times are GMT -5. The time now is 05:49 AM.

story-0
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-1
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-2
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-3
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-4
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-5
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-6
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-7
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-8
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-9
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