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Cruise Control Not Operational

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Old Jan 31, 2016 | 11:24 PM
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Cruise Control Not Operational

The cruise control on my truck is suddenly not operating. The recall pigtail at the brake master cylinder was installed some time ago. There is power at that connector. My first thought was that it's fusible link was the issue, but I guess that is not the case. What else should I check?
 
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Old Jan 31, 2016 | 11:57 PM
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Does your horn work? Is your airbag light flashing? If you answer no and yes in order to those questions your clockspring is likely broken. If not disregard my post.
 
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Old Feb 1, 2016 | 12:56 AM
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The air bag light is not flashing and I believe the horn is still working. I'll check that tomorrow. I considered the clockspring, but since the air bag light wasn't flashing, didn't think it was likely the issue.
 
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Old Feb 1, 2016 | 07:54 AM
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I would try activating the CC with your foot pulling up on the brake pedal. If it works, your brake light switch is out of adjustment.
 
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Old Feb 1, 2016 | 09:38 AM
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Run the codes as a matter of course. Anything VSS could be related.

I book-marked Bill K's most recent troubleshooting of CC in-op if you missed it. Pretty good guide.

https://www.ford-trucks.com/forums/1...t-working.html
 
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Old Feb 2, 2016 | 11:14 PM
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Originally Posted by jas88
I would try activating the CC with your foot pulling up on the brake pedal. If it works, your brake light switch is out of adjustment.
It looks like you may have hit the nail on the head. I tried this and it seemed to have worked. The brake lights work normally though. What exactly needs to be adjusted?
 
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Old Feb 2, 2016 | 11:14 PM
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Originally Posted by Scndsin
Run the codes as a matter of course. Anything VSS could be related.

I book-marked Bill K's most recent troubleshooting of CC in-op if you missed it. Pretty good guide.

https://www.ford-trucks.com/forums/1...t-working.html
The trouble codes came back clear.
 
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Old Feb 3, 2016 | 01:10 PM
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the servo that pulls the cable working? that was my issue...
 
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Old Feb 3, 2016 | 01:11 PM
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20 at junk yard, the servo deals are no longer avalible at any stores including ford
 
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Old Feb 3, 2016 | 02:21 PM
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My current servo is from a 2K something Crown Vic, my original is probably still good. My PSOM turned out to be what was killing my CC function. I had no idea they weren't available.
 
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Old Feb 3, 2016 | 02:27 PM
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I just know they weren't available for these trucks, probably the same in other Ford vehicles tho
 
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Old Feb 3, 2016 | 03:20 PM
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The brake lights work normally though. What exactly needs to be adjusted?
I believe besides the brake light switch there is also a vacuum dump valve that could be out of adjustment. Don't have a wiring diagram with me here at work to tell if the actual brake light switch is also for CC, or if it has a separate circuit. Just look up at your brake pedal and you should see 2 plungers touching the lever, make sure those are snug up against the lever.
 
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Old Feb 15, 2016 | 10:14 PM
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What's the best way to test the servo?

This is what the brake switch on the pedal looks like. I only see 1 plunger.


 
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Old Feb 15, 2016 | 10:37 PM
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First thing I would do is check for a blown fuse.
 
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Old Feb 16, 2016 | 07:33 AM
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what vehicle? auto trans or manual trans?

since pulling up on the brake pedal makes it work, it sounds like a switch out of alignment, or worn bushings in the pedal assembly.
 
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