99 WJ 4.0 tranny shifting issues

[TheDamnScoob]

I was heading about an hour from home. And after about ten miles it wouldn't shift into overdrive. After some tinkering with the od switch and a stop sign. It was in and out of overdrive. Then I got to my destination and shut it off. After I restarted it wasn't wanting to shift properly. Almost like slipping. Fluid is full and clean, not burnt. Could this be a dirty valve body issue or solenoid issue?

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[TheDamnScoob]

So, I drove it some more. It started jumping out of 2nd and staying in first. Then the CEL came on. I pulled the code and it was p0720 output speed sensor.

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[holliewood61]

Easy fix. Its the white sensor drivers side of the trans towards the rear. Just screws into the side of the transmission.

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