I have read several of the post on here about speedo's acting up, but I'm not finding anything that pertains to my specific problem. A few months ago I bought a 2000 Excursion, it currently has around 179,000 miles on it. When I got it the ABS light was on and this site is actually where I found out to replace the sensor on the rear end to fix that. My problem is that until a few weeks ago even with the ABS light on my speedo worked just fine and then it started acting up every time I hit the brake pedal and then eventually quit working all together and my cruise control light would flash as well as the OD light. I replaced the sensor in the rear end and also found out about a recall for the cruise control and had that repaired as well. Now the ABS light is no longer on and the cruise light is not flashing, however the OD light still flashes and 95% of the time my speedo does not work at all. On Monday while heading to town it started working, hit the brakes and all was good, set the cruise control and used it all the way to town, but as soon as I hit the brakes the needle started jumping around and went back to zero and stayed there. I have ohmed the sensors and wires from sensors to harness under the hood and all seems good. I am looking for any advice that I can get on this, the only code I can pull with my meter is P0500 which is just a generic code. I would like to get this fixed without having to pay an arm and a leg. Again any help will be greatly appreciated.

Moose

 

If your OD light is flashing I would start there. If you have to pay to have it checked somewhere at least you would know where to start. It's hard to say what it is until you have that code read.

 

Subscribed...

Joe.

 

I'm really hoping I can find something out soon. It's really starting to get on my nerves. By chance does anyone know if there is a way to pull the codes for the transmission using the blinking light? I know on some of the older vehicles you could get the check engine codes by turning the ignition on and off so many times and make the check engine light flash and it would give you codes that could be looked up. I'm almost certain there's a way to do it, just have to find someone willing to tell me.

 

Found some threads over in the Superduty Forum that may apply:

https://www.ford-trucks.com/forums/1...ml#post9897650 - "there's a chip inside the cluster"

https://www.ford-trucks.com/forums/1...l#post12069694 - "Recommend getting the ABS code read with a Ford ABS-capable reader."

 

we'll i heard this from a windser owner it sounded like your problem might be the speed sensor but he had a check engine light that told him

 

Ok, so with a little more checking and getting a little frustrated, I don't think the sensors are my problem. I'm now getting codes P0500 and P0503 and from what I can find these have more to do with the wiring and connections. I've also read on here about where other components can be causing interference with the wiring that feeds the speed sensors and cause them to malfunction. This is definitely a long sucky process to narrow down the problem. I would love to be able to take it to someone and say here, fix it... Unfortunately I don't have the luxury right now though, and besides that I hate having someone else work on my vehicles. Hard to find good mechanics these days, it all about replacing parts till they finally find the right one and then charging an arm and a leg for their guess work. Anyhow, will continue to narrow down the problem, one wire at a time.... I did print off several wiring diagrams for the X, so hopefully they will help to determine what wires go where....