My 1999 F350 has abs light stay on. The overdrive flashes, miles do not move, speed needle does not move, miles do not move. I changed the abs speed sensor on top of rear axle 2X did not help at all. WHAT IS MY ISSUE ?? What do I change next to try and get miles/speed needle to work?? THANKS FOR ANY ADVICE !!!

 

Sounds like the Instrument Cluster might be bad?

 

Speed sensor on transmission.

 

Is there a way to test to see IF bad ? Where is the best place to purchase one for the $ ?

Thanks, Richard

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Ford has told me that speed sensor is located on top of rear axle. I have replaced it 2 X and did not help. What would that switch be called on transmission or part # IF it could be on transmission ??

Thanks, Richard

 

I had the exact same problem. My OD light would flash on the shifter and the speedometer would be dead. I replaced the rear wheel speed sensor on the forward side of the rear pumpkin ($12) and it fixed everything. It took me longer to find it than it did to replace it!

 

So is there 2 switches on rear axle? What is the part # for $12.00 switch?? THANKS Richard

 

http://shop.advanceautoparts.com/wcs...1_pri_larg.jpg

This is a pretty good picture although it may not be the exact one. It is held on with a 17 mm if I remember. It is on the rear differential at the top of the housing with a wire harness plugged into it. Every auto parts store should have them though.

 

Is the switch your talking about Ford part # F85Z 9E731 ? I changed it 2 times already

 

I had a similar issue on my 99 a few years ago. The previous owner had put so many taps on the fuse box under the dash that the fuses were loose in the holders. I ended up replacing the fuse box with one from a junk yard and it cleared up all my issues.

Took me a while to figure that one out because the fuse would show connectivity with a test light when i would look in the driveway, but then rattle loose when running down the road. Dealership thought i needed an outrageously overpriced GEM module.

I want to say it was the abs fuse, but its been a while. Had the exact same symptoms as yours though. New fuse panel was $50 at a pick and pull in NC.