97 zj output shaft speed sensor keeps failing.

Question

The output shaft speed sensor on my 97 zj keeps failing. Each time I replace it, it drives good for a little while then fails again and the check engine light comes back on and it starts shifting abnormally. I've replaced the sensor 4 times now and just replaced the PCM and sensor today. Took it for a drive and was working great then the sensor failed again. What could be causing it to continuously burn out?

Answer 1

The output transmission sensor also serves as the vehicle speed sensor, this sensor produces its own signal , for this to burn out there has to be a wire touching each other, your going to have open the convolution tube  look especially where there is transmission fluid leak there and where there is a possible zip tie , what happens is these wire tend to wire rot hopefully that would be it.