Cruise control
Mountain Pass
Joined: Jul 2020
Posts: 156
Likes: 13
From: Wichita
Well there is usually 2 things that cause this, #1 bad fuse, however if I remember right the fuse if also connected to the horn. So honk it, if it doesn't honk bingo. #2 Vacuum leak, your cruise control runs off of a vacuum, if it is leaking no cruise control. This one is difficult to pin down.
Hotshot
Joined: Jul 2020
Posts: 10,534
Likes: 2,664
From: Near Salt Lake City
Horn +
Brake lights (fuses)
Cable
On those old ones they used to make us substitute a known good part (amplifier)
The switches themselves and the contacts through the air bag clockspring if equipped are common failure points
Most common is a kicked off vacuum line under the dash on the clutch or brake pedal (vacuum dump valve)
Next most common was a broken cable from the servo
pull back on the rubber diaphragm and see if the throttle plate moves
Brake lights (fuses)
Cable
On those old ones they used to make us substitute a known good part (amplifier)
The switches themselves and the contacts through the air bag clockspring if equipped are common failure points
Most common is a kicked off vacuum line under the dash on the clutch or brake pedal (vacuum dump valve)
Next most common was a broken cable from the servo
pull back on the rubber diaphragm and see if the throttle plate moves
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New User
Joined: Aug 2012
Posts: 2
Likes: 0
From: ga
This looks like something I can try. Can you tell me where you found the information? I would like to print it out and take it outside to my trunk.
I have tried to print ot but it's comminh out to small for my old eyes.
Thanks,
Jefferson150
I have tried to print ot but it's comminh out to small for my old eyes.
Thanks,
Jefferson150
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A the fuse box. the commonly overlooked solution to complex problems and even despite it being freaking obvious to me to check those first. but yes a reminder for KISS is always helpful. I infact will yell at someone as if they didnt check fuses if they indicated that the specific fuse(s) didnt check out after a removal and replace no change necessary, because on buick forums, my car has 3 BECs and a maxifuse box and one is under a seat, hood, and the dash under wraps, so people often skip that step in a car with more modules than a loaded F series of this era lol in just the front half of the car
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1988midnightblue
1987 - 1996 F150 & Larger F-Series Trucks
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Jun 22, 2007 07:24 AM