I would like to open a polling about the MTBF (Mean Time Before Failure) of the speed sensors on 45RFE/545RFE Transmissions. My Jeep has about 147K miles on it and the trans is working well. I read around that the sensors MTBF is about 80K miles, mine has about the 50% of miles more. I was wondering if I was lucky or I need to change anyway the sensors as they should be degraded but still whitin the nominal behaviour.
My proposal is something like this:
Engine: 4.7 V8
2° OD Update done: YES
Transmission oil change: YES
Transmission behaviuor: Nominal
Transmission Ground Strip: YES
Front Sensor changed (if Yes write down also miles): NO
Back Sensor changed (if Yes write down also miles): NO
In the notes field you should write down anything you have in mind...related to the transmission!