Based on posts to this group, I've noticed that the magnetic speeds sensors seem to be the weakest link of the 42LE transmission used in second generation LH cars, but that it is apparently not too hard to replace the sensors. I'm looking at the factory service manual, but it is unclear from the diagrams & directions if the sensors are accessible from above, or if the vehicle must be raised. (If the transmission is stuck in 2nd gear limp mode, I can imagine that the transmission may not like pushing a car up onto the lift). The step by step directions in this manual usually include the step raise vehicle when necessary, but they don't in this case.
Couple of questions:
Will autostick still be available to shift manually if the sensor(s) fail and the transmission goes into Limp Mode? This would be an ideal use for the autostick, and I can't imagine driving in 2nd gear for long to get to a place where I can repair.
For the sensors that failed, was it due to something simple like dirty sensors, or was it something internal to the sensor?
Looking at the parts manuals, I noticed that 1998 model year LH cars use Speed sensor (input/output) part numbers
4412878 / 4412879 while 1999 model year and later LH cars use Speed sensor (input/output) part numbers 4800878 / 4800879. Does the change in part numbers represent a more reliable sensor for later vehicles?Any hints on finding the sensor?
Thanks! (want to file this away in case or until I have this problem :)