Horn And Cruise Control
#1
Horn And Cruise Control
I bought a '99 F-150 XLT 4X4 and picked it up last night. On the way home, I couldn't get the cruise control to work (it has already been in for the recall to install the fusible link.) Today, I tried to honk the horn, and realized that it doesn't work either. I read through the threads talking about the clockspring and relay. Which would it be if my airbag light is NOT on?
The only other thing wrong with it is that darned intermittent digital odometer, which I've already learned how to fix from the tacked thread.
The only other thing wrong with it is that darned intermittent digital odometer, which I've already learned how to fix from the tacked thread.
Last edited by M4Madness; 01-29-2008 at 08:37 PM.
#2
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#4
I picked up the relay that Autozone said was the right one, and proceeded to try it out. I don't have the owner's manual, so I just had to experiment. I looked in the engine compartment fuse box. There were three just like it, and one empty space without one. I tried it in the empty space and substituted it for all three of the others, and none of them made the horn work.
Can it still be the clockspring, even though my airbag light is not staying on? It comes on at start-up, then goes out like it should.
EDIT: I just downloaded the owner's manual from the internet, and it says that the horn relay is #205. I checked just now, and that's not even one of the relays I tried. The one autozone sold me was one of the bigger ones. Hopefully I can track the one I need down at the local dealership, and it'll fix it.
Can it still be the clockspring, even though my airbag light is not staying on? It comes on at start-up, then goes out like it should.
EDIT: I just downloaded the owner's manual from the internet, and it says that the horn relay is #205. I checked just now, and that's not even one of the relays I tried. The one autozone sold me was one of the bigger ones. Hopefully I can track the one I need down at the local dealership, and it'll fix it.
Last edited by M4Madness; 01-30-2008 at 05:48 PM.
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#8
Well, my wife just took my expedition in to have the recall work done.
My horn works with the key off, but not with it running. Get this--their reply is that since the recall work was delayed (due to their not having the parts available!) the damaged horn assembly repair is going to run $2400.
We'll see how this one pans out, I've not looked at things yet--but holy cow, not impressed with them at this point.
My horn works with the key off, but not with it running. Get this--their reply is that since the recall work was delayed (due to their not having the parts available!) the damaged horn assembly repair is going to run $2400.
We'll see how this one pans out, I've not looked at things yet--but holy cow, not impressed with them at this point.
#9
Originally Posted by gunbug
...the damaged horn assembly repair is going to run $2400.
#10
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gunbug: The horn's failure has nothing to do with the cruise recall or any portion of that circuit. Do not attempt to link their failures together. Further, you must specifically identify your vehicle in order to receive technical assistance.
All:
It is possible for the clockspring to cause only one or two of the subsystems to fail without affecting the others. It all depends on the exact and specific nature of what failed.
It has been observed repeatedly that simultaneous failures in all three of the discussed sub-systems is usually the clockspring, but the lack of failure of all three simultaneously neither confirms or rejects the hypothesis that the clockspring is at fault.
A single failure of only one conductor of the clockspring will take out both the cruise and the horn. It takes the failure of an additional conductor (one of two) to knock out the airbag circuit as there is nothing electrically in common with either the horn or cruise circuits.
Steve
All:
It is possible for the clockspring to cause only one or two of the subsystems to fail without affecting the others. It all depends on the exact and specific nature of what failed.
It has been observed repeatedly that simultaneous failures in all three of the discussed sub-systems is usually the clockspring, but the lack of failure of all three simultaneously neither confirms or rejects the hypothesis that the clockspring is at fault.
A single failure of only one conductor of the clockspring will take out both the cruise and the horn. It takes the failure of an additional conductor (one of two) to knock out the airbag circuit as there is nothing electrically in common with either the horn or cruise circuits.
Steve
#11
My cruise is intermittent (and rarely works) but my horn works as it should. Does this mean I can rule out the clockspring being bad since the horn still works or is that still a possibility?
Thanks.
Thanks.
gunbug: The horn's failure has nothing to do with the cruise recall or any portion of that circuit. Do not attempt to link their failures together. Further, you must specifically identify your vehicle in order to receive technical assistance.
All:
It is possible for the clockspring to cause only one or two of the subsystems to fail without affecting the others. It all depends on the exact and specific nature of what failed.
It has been observed repeatedly that simultaneous failures in all three of the discussed sub-systems is usually the clockspring, but the lack of failure of all three simultaneously neither confirms or rejects the hypothesis that the clockspring is at fault.
A single failure of only one conductor of the clockspring will take out both the cruise and the horn. It takes the failure of an additional conductor (one of two) to knock out the airbag circuit as there is nothing electrically in common with either the horn or cruise circuits.
Steve
All:
It is possible for the clockspring to cause only one or two of the subsystems to fail without affecting the others. It all depends on the exact and specific nature of what failed.
It has been observed repeatedly that simultaneous failures in all three of the discussed sub-systems is usually the clockspring, but the lack of failure of all three simultaneously neither confirms or rejects the hypothesis that the clockspring is at fault.
A single failure of only one conductor of the clockspring will take out both the cruise and the horn. It takes the failure of an additional conductor (one of two) to knock out the airbag circuit as there is nothing electrically in common with either the horn or cruise circuits.
Steve
#13
Thanks for the info. I did try the key on diagnostics - got the dash light on the "On" button but didn't get any dash light on the "Set Accel", "Res", or "Coast" buttons.
It is entirely possible for the horn circuit to be intact and operational while the cruise is not.
It all depends on which conductors may have been damaged, if, in fact, the clockspring is the reason for the cruise failure.
I'd suggest trying the speed control diagnostics.
Steve
It all depends on which conductors may have been damaged, if, in fact, the clockspring is the reason for the cruise failure.
I'd suggest trying the speed control diagnostics.
Steve
#15
horn and cruise control fault
vehicle is 2002 f150 supercrew 2wd 4.6 L. My horn works with key off, once ignition switch is turned to on horn stops working. Cruise control does not work. Tried the key on diagonstics and did not get any lights. All fuses and relays are good. I am looking at replacing the clockspring. Any thoughts or info on this will be appreciated.