PricklyPear
New Member
- Joined
- June 24, 2018
- Messages
- 2
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- Year, Model & Trim Level
- 1991 explorer sport
Last Wednesday, our daily driver Explorer stopped shifting into OD like usual. Normally, it runs at about 1500 RPM at 60 MPH but it was suddenly running at 3000 RPM at 60 MPH. Stopped right away & checked the fluid & it was full, no smell or anything like that. It seemed that overdrive was simply no longer there as shifting between 3rd & OD made no difference to the sound of the engine or RPM. Since then, I've changed the MAF sensor, the speed sensor, the shift solenoid, the modulator valve, the OD servo, the chip in the dash, and changed the fluid & filter in the transmission, all to no avail. I tightened the bands. Fluid looked good & there was no metal or anything in the pan. Took it to a shop & put it on a code reader and it output no codes at all. I'm officially baffled. Any help would be appreciated.