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First of all, thanks again to everyone that took the time to share some
insight regarding the recent speedo/odo concerns. I certainly learned a
few things - this list is great for one's learning curve.
Well, as you may remember, I diagnosed my speedo sensor at the
transmission to be dead - open circuit. Mine, incidentally, is the
electronic type with a small square shaft that engages with the tranny
works as the unit is threaded into place. I got a new sensor, installed
it, but was still at 0 mph. [Then I started driving, but the needle
STILL wouldn't move! ;-) ] Took the sensor out, tested it - DEAD.
This "new" sensor came to me in a suspicious looking bag - opened, and
odometer mileage handwritten on the label. I figured that I must have
gotten a used, bad part that had been restocked by mistake.
Got yet ANOTHER new sensor today - tested BEFORE installing (for
variable resistance across leads 2 & 3 as shaft was turned) - looked
okay! Great. Problem solved, I thought...
Installed and started driving - needle at zero. Diagnosed sensor -
DEAD. Bummer. I had already checked the fuse panel (very first thing)
- fuse just fine. Something in the circuit appears to be frying my
sensors. Before I dive deep into Bentley's circuit diagrams, please -