I have a 92 Bronco 4wd automatic trans. My problem is that my transmission seems to slip out of gear and back into gear when my engine is hot and the AC is running. I just drove a couple hundred miles the other day and no problems, but towards the end of my trip I turned my AC on and shortly there after began having problems. I have taken it in to dealer a couple times, but all they seem to do is flush the system.
Any advice or help?
Thanks in advance!!
Mike

 

Sounds like it could be overheating due to the added heat of the a/c condenser. I would add an extra tranny cooler in front of the condenser and see if that helps.
Jimmy