Samson3113

Hi Folks

Does anyone know where I should start to figure out why my Cruise Control stopped working ?
The panel Cruise Control light comes on, but the I cannot set the speed for some reason

Thanks
Jim

millball

First place I'd look is to see that the vacuum servo is sound, and will pull the throttle back.

Samson3113

Thanks millball

i will have to see where that is located, but how do i test it ?

Jim

wyoming9

iTrader: (1)

You might want to look and see if the parts are even there .

They quit working and get tossed

millball

Easist way would be with a Mityvac hand pump, but it would be possible to imprivise and use direct engine vacuum, if you disconnect the cruise cable from the throttle before testing.

Samson3113

wyoming9
You might want to look and see if the parts are even there .

Not sure what you mean by this statement

Jim

Samson3113

Thanks millball

Jim

atcfixer

iTrader: (1)

He means, make sure the parts are under the hook that makes the cruise work. These trucks are getting old and people swap parts around. You might have the controls and light in the dash, but the parts under the hood could be missing. On the throttle plate there should be 2-3 cables, one for throttle, one for the trans if you have an automatic, and the last one for the cruise control. Cruise control cable should go across the engine and end at a control unit of some fashion (unsure what that gen looks like, newer ones are electric motor based).

ewong

also - take a pic of your cruise control stalk

It was common for dealer's to ADD it.

There are VAC servo and also "stepper" motor servos...

millball

Don't think you'll find an electric servo cruise on an '86 unless it's later aftermarket.

cbr600rx7

I have a full working cruise control system if you need one. I removed it when I did the rebuild to open up space.

Samson3113

Thanks atcfixer

I am original owner, that's why I was confused

Jim

Samson3113

Thanks ewong

I will take a look
I am sure that it was from the factory, but I will check

I am lookng for interior parts (gray)

Jim

Samson3113

Thanks for the offer cbr600rxy

I would like to fix mine if I can

Jim

ewong

If the cruise control buttons are on a their own stalk - its afternarket

But since you mentioned a light (that is located on the dash by the key) its likely OEM

atcfixer

iTrader: (1)

Shoot me a pm on what dash parts you need. I have a 4x4 86 pickup I'm parting out with gray interior, and I'm a bit on the fence on the other 2wd 86 pickup I have which has a good cab and pretty much flawless interior (it's like 60k miles on it). I don't have SR5 exact parts (door panels, arm rests, window switches), but most other things should be pretty much the same.

I can't really help much with the cruise problem, I have details on the newer ones but not the older ones.

One thing to check is your clutch pedal height (if you have a manual trans), there is a switch on the clutch, and if your clutch is worn, it could be possible it doesn't return high enough to hit the switch. Another switch that can stop it from working is the brake switch, similar setup as the clutch, but you'd probably know about it since your brake lights would be effected as well.

Samson3113

Hi atcfixer

well it looks like all the parts I am looking for you don't have (window switches, arm rest, door panel,etc)
thanks for the offer anyway\

any seat belts that are in good shape ?

I am pretty sure all my brake and clutch switches are working

Thanks
jim

Samson3113

Hi ewong


yes, definitely OEM

jim

atcfixer

iTrader: (1)

Darn, those sr5 parts seem extra desirable for some reason, I'm always being asked on ebay if I have sr5 arm rests when I had normal ones listed.

I'll have to check on the seat belts, the body is pretty rusty, so they might not be simple to remove.

Samson3113

Thanks atcfixer

sr5 parts are hard to get these days. not much after market interior parts it seems
thanks for your time anyway

Jim