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Speedo/Odometer randomly quits, NOT speed sensor problem...
My 99 F550 Ford 7.3L diesel runs great. The transmission sounds like it shifts just fine. However, while driving the speedometer and odometer will randomly stop working, and the overdrive button will begin to flash. I've replaced the VSS, and it continues to have the same problem. If I am at a stop light, put the truck in Park, then back to Drive, the speedometer/odometer begin working again and the overdrive flashing stops after a minute. No fuses are bad. And no, the ABS light is never illuminated.
I don't know if it is related or not, but the reverse lights AND trailer hook up connector closest to the reverse lights do not work...again, no bad fuses.
I've seen some folks mention having the transmission codes read because of the flashing ODS light, but the light is not always on.
What should I do?
Last edited by CobbAndCobb; 02-24-2014 at 05:54 AM.