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1986 F-250 Cruise control

1970Custom

1970Custom

They call me Spuds
14,107
447
Middleton, ID
So I've go my '86 and the cruse hasn't worked for friggen ever, where should I start to get it working again, and what should I expect to pay for the parts?
 
TexasNomad

TexasNomad

FTFS Designated DRINKER!
17,057
676
Half past hell AKA Lubbock Tx
1970Custom said:
So I've go my '86 and the cruse hasn't worked for friggen ever, where should I start to get it working again, and what should I expect to pay for the parts?
Click to expand...
Well have you tried to track down what it might be?
It could be a sensor,relay broke wire fuse.
Dose it just not work at all or....
 
1970Custom

1970Custom

They call me Spuds
14,107
447
Middleton, ID
Nomad, I don't even know where to start to even try to fix it as I don't know/understand that system. it doesn't work at all...

Chris, the horn does work...
 
TexasNomad

TexasNomad

FTFS Designated DRINKER!
17,057
676
Half past hell AKA Lubbock Tx
1970Custom said:
Nomad, I don't even know where to start to even try to fix it as I don't know/understand that system. it doesn't work at all...

Chris, the horn does work...
Click to expand...
I would first try to track down the fuses and relays maybe some one can be kind enough to provide a diagram. If not I would get my hands on a Hayens or Cilltons.
My bet would be a blow fuse or relay.
 
Fellro

Fellro

Moderator
Staff member
7,953
360
Iowa County, Iowa
Clock spring on these is part of the steering wheel itself. In order to replace, requires a different steering wheel.
 
Mil1ion

Mil1ion

Still Da Man
6,277
221
Just Above a Huge Gas Source
First thing you do is check for power to the system.

It gets power in 2 places.

Check behind the instrument cluster first for a single wire going to the 3-way connector.

The cruise buttons are powered by the previous NON-Cruise Horn power.
I suppose that's why he asked if the horn works,but the horn gets its power another way.


I have a schematic of the cruise system and a TS guide.
 
Lost

Lost

PA Chapter leader
3,288
33
central PA
Check fuses.

Like said check switches for power.

Then check for power under hood .

The actuator or whatever u want to call it (hooks to throttle cable) go bad . I replaced several on my old 86 .
 
Fellro

Fellro

Moderator
Staff member
7,953
360
Iowa County, Iowa
On the 86's, there is a speed sensor in the hard cable line, that is the closest thing to a speed sensor in those days.
 
subford

subford

290
18
Easton, Kansas
His truck does not have a clockspring.
Check the vacuum dump valve.
If the fuses and the dump valve are OK then more than likely you need to clean the brushes in the column. Check the resistance when each is pushed.

I do not have a diagram for the 86 but I think that the 88 is the same so here are two diagrams for the 1988 speed control.

http://i54.photobucket.com/albums/g91/subford/Electrical/Speed Control/PG113.jpg

http://i54.photobucket.com/albums/g91/subford/Electrical/Speed Control/PG114.jpg

And here is one of how it works and TS tips.
http://i54.photobucket.com/albums/g91/subford/Electrical/Speed Control/PG115.jpg

Good Luck
 
Last edited:

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