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I have an F 150 four wheel drive automatic truck with an analog (no electrical display) speedometer odometer with a tachometer.
My odometer quit working a few days ago and I have done a lot of searching on the internet. My question is wouldn’t my set up have a cable that drives the gears from the transmission. Quite a few posts on the net seem to imply that they are all electrical inputs that run the odometer. My other question is the anti theft system. It seems that there are posts warning about removing the cluster and repairing it. They mention that the truck doesn’t start afterward because of the anti-theft system won’t allow it because of the removal of the cluster. My last question concerns instructions for the removal of the cluster. Does anyone know of a site or link that my explain the procedure?
You don't have PATS so the cluster issue is moot. You have a Vehicle Speed sensor for the speedo/odo often referred to as the VSS. IIRC there is a change between the tranny tailshaft and the rear end for the location of the VSS I can't remember if ours is on the tranny or rear end.
If the speedometer is still working but the odometer has quit working, then the problem should be in the head (cluster). Does the odometer still show a reading or has the display quit working?
Thanks for your reply Galaxie641. I have a couple of more questions. If the odometer is not working but the Speedometer and tach are does that mean the gears of the odometer and trip are the problem and the Vss is working?
If the speedometer is working, then the VSS is working. If the odo is gear driven, and it has quit, then the problem should be the gear driving it, which should be driven off the speedo head. If the VSS had quit providing a signal, neither one of them would be working. The tachometer has nothing to do with the speedo/odo. It's measuring engine speed.
Sounds like your cluster is like the one in my 97 Lariat. Mine has a analog odometer....not digital.
I had my cluster out back in the early spring I believe, to replace a burned out lamp. Wasn't hard to do provided you have some instruction.
I replaced all the lamps while I had it out and wouldn't you know it, the odometer quit working afterwards. So I pulled it back out and disconnected the main connector and shoved it back on and it worked after that.
Just be careful when removing the headlight switch, which to me, turned out to be the hardest part of the operation. Well, not really hard, just seemed like it.
my girls 98 mustang has a good speedo and no odometer. i pulled the cluster and there is a pair of gears that comes off the speedo and drives the old style odometer like they did 20 years ago. i bought a new set of gears on e-bay.
This site shows a worm gear does that look like the correct gear? I think I need two gears because my trip indicator doesn't work either.[IMG]file:///C:/DOCUME%7E1/FRANKH%7E1/LOCALS%7E1/Temp/moz-screenshot-4.png[/IMG]