disconnect speedometer
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New User
Joined: Feb 2003
Posts: 4
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From: Austin, TX
disconnect speedometer
-1998 F-150 4X4 extended cab 5.4L automatic-
Anyone know how to disable the speedometer?
The illumination for the AC/heater controls is out: Is it a fuse or lamp issue?
I get in, close the door, hit ignition: the "door ajar" and interior lights stay on for about a minute or so. Anyone have this problem?
Anyone know how to disable the speedometer?
The illumination for the AC/heater controls is out: Is it a fuse or lamp issue?
I get in, close the door, hit ignition: the "door ajar" and interior lights stay on for about a minute or so. Anyone have this problem?
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
disconnect speedometer
Why do you want to disable the speedo? It's fed off a sensor on top of the rear axle, but that sensor also feeds the ABS, cruise, & transmission.
Do you have factory remote keyless entry OR anti-theft?
Do you have factory remote keyless entry OR anti-theft?
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New User
Joined: Feb 2003
Posts: 4
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From: Austin, TX
disconnect speedometer
A buddy bought a '99 pickup like mine from a woman. It belonged to her now deceased husband.
We found that sensor and plugged it back in, but speedo still does not work. There has to be something else that is disconnected or disabled. You mentioned ABS and trans. After we connected that sensor the ABS light went off. Could there have been any damage (to tranny or ABS) with that unplugged?
I have a factory remote keyless.
We found that sensor and plugged it back in, but speedo still does not work. There has to be something else that is disconnected or disabled. You mentioned ABS and trans. After we connected that sensor the ABS light went off. Could there have been any damage (to tranny or ABS) with that unplugged?
I have a factory remote keyless.
Elder User
Joined: Dec 2002
Posts: 550
Likes: 1
From: Effingham,IL USA
disconnect speedometer
about your dome light problem you can spray wd40 on your door latch to try to free up the switch. the door open/close switch goes bad a lot on your year truck. its on the door latch inside the door. try that and see if it helps. otherwise you probably have to change the switch. i dont think you have a cable to your speedometer.
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
disconnect speedometer
The trans MIGHT have been damaged, but I doubt it. You should unhook the battery for ~5min so the computer forgets that the sensor was unplugged, and after ~10mi of driving, it will relearn everything.
The speedo also needs power, ground, & switched power, so check it. Sometimes they just go bad, but it's not common.
The speedo also needs power, ground, & switched power, so check it. Sometimes they just go bad, but it's not common.
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
disconnect speedometer
I specialize in '80-96 trucks, so I can't tell you where to look, other than eBay. You can get a Ford Service CD for $5-10 that will show you everything you need and more.
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