Update... Installed a new Bosch alternator. Started truck and tested for AC voltage - zero AC. Drove truck 15 feet forward out of the garage and into the yard and let idle. 10 minutes later I check, belt tracking well and dash voltage gauge where it should be. Then I see the overdrive light flashing. I pull the fuel shutoff wire and the truck shuts down. I leave the ignition alone. I hookup the scanner to the two connectors under the hood, driver's side and trig the accelerator pedal as directed. Nothing. No marble rattling sound that these scanners usually cause.
I'm thinking that the TCM must be bad. I can get a replacement but the darned thing sounds like Ford built the truck around the TCM; hidden between the inner and outer fender.
Since the transmission faults sitting still I'm ruling out the speed sensor and the RPM sensor looks good. Since I've lost 2 replacement stereos (the last quit with a odor - not wires as much as a chip) I'm guessing the AC ripple may have damaged the TCM.
Thoughts ????
I'm thinking that the TCM must be bad. I can get a replacement but the darned thing sounds like Ford built the truck around the TCM; hidden between the inner and outer fender.
Since the transmission faults sitting still I'm ruling out the speed sensor and the RPM sensor looks good. Since I've lost 2 replacement stereos (the last quit with a odor - not wires as much as a chip) I'm guessing the AC ripple may have damaged the TCM.
Thoughts ????