ZJ Not shifting into Overdrive
Recently bought a 1995 grand cherokee, 112k on the odometer. I drove today about 85 miles and the truck wasn't going in over drive . The light above the OD off button turned on too. Once the truck cooled down, light came off and went into overdrive. Ps. The truck was sitting for about 10 months from the previous owner. From reading on the forums, i have comprehended that is cause from the trans overheating
1. The trans fluid level is fine
2. The fluid does not look dirty
3. I am thinking that my trans cooler is clogged or one the lines
Any suggestions, things to check and test would be appreciated, Thanks!