No cruise control?
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Posting Guru
Joined: Jul 2011
Posts: 1,219
Likes: 2
From: Elk City, OK
No cruise control?
My 88 in the sig is factory equipped with cruise control. I've never tried to use it until a couple of days ago. I was going down the highway and i pressed on, set accel, and I let off the throttle. Nothing happened. It just kept losing speed. Am I doing it right or does my cruise not work?
Cargo Master
Joined: Mar 2007
Posts: 2,935
Likes: 34
From: Arcadia, Fla
There is no cruise light on these years of trucks.
2x on vacuum lines and throttle cable from the servo, check them 1st. After that, start checking the brake switch and/or clutch switch(if manual tranny).
There are several good threads on the cruise control diagnostics, just search for them.
2x on vacuum lines and throttle cable from the servo, check them 1st. After that, start checking the brake switch and/or clutch switch(if manual tranny).
There are several good threads on the cruise control diagnostics, just search for them.
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
From Steve83: 1983 Ford Bronco Diagrams picture | SuperMotors.net
The last photo and caption have great troubleshooting info.
The last photo and caption have great troubleshooting info.
Senior User
Joined: Feb 2013
Posts: 273
Likes: 0
From: California
Does your speedometer work? If the speedometer gear / speed sensor isn't working, then the cruise won't work. As others have mentioned, open up your cruise servo and check out the cable inside (the servo is the round thing on the driver side fender, just forward of the brake master cylinder / brake booster); my cruise was broken and the problem for me was that cable.
More Turbo
Joined: Oct 2012
Posts: 639
Likes: 2
Check the brake switch. Mine was not adjusted right so the cruise always thought my brake pedal was down which disables it.
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Cargo Master
Joined: Mar 2007
Posts: 2,935
Likes: 34
From: Arcadia, Fla
Does your speedometer work? If the speedometer gear / speed sensor isn't working, then the cruise won't work. As others have mentioned, open up your cruise servo and check out the cable inside (the servo is the round thing on the driver side fender, just forward of the brake master cylinder / brake booster); my cruise was broken and the problem for me was that cable.
These year trucks are cable driven speedometers. The cruise control vss is inline with the cable at the tailshaft of tranny or in xfercase if 4x4.
One thing could be is the switches in the steering wheel could be munged up and/or the slider contacts(clockspring) bad too.
Here's what took out my cruise control...
The ants got into the servo through that little vent hole. It worked most of the way home then quit on me! I checked the brake switch while gasing up the truck, but no luck till I got home and popped the hood to find that supprize !
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New User
Joined: Oct 2012
Posts: 19
Likes: 0
From: Rockdale , TN
The cruise control on my 98 wasn't working and I tried everything I read . Nothing worked . I was digging around in a wad of wires that the master cylinder tied into and there was a lot of tape . I unwound it and found a 2 amp inline fuse that was blown. I replaced it and the cruise works fine . Like I said I haven't read anything about this in my searches for no cruise control . I hope this helps somebody .
Bill
Bill
Tuned
Joined: Sep 2013
Posts: 368
Likes: 0
From: Virginia Beach/Wisconsin
How long ago did you replace that fuse? The fuse was the dealer recall for the defective/leaking brake switch there on the master. If that fuse was blown, it could indicate the switch is going. This little thing has burnt many-a-truck to the ground (and a few houses with it).
Postmaster
Joined: Nov 2011
Posts: 3,533
Likes: 17
From: SW Florida
Take it to Ford, they might give you one if it's the old (recalled) style.
Although when they install the fuse harness, they are supposed to check and see if the switch is the fire hazard model or not... and replace it if so.
Although when they install the fuse harness, they are supposed to check and see if the switch is the fire hazard model or not... and replace it if so.
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