1997 Grand Cherokee: Slipping and Hard Shifting when Transmission gets Wet
The transmission on my 1997 Jeep Grand Cherokee works smoothly without any problem on dry days. Its also fine on rainy days .... until I drive through a puddle and the underside is sprayed with water.
At that point, it will slip, and then start to hard shift and seem to be working in the wrong gears (while making aweful noises) . Usually it goes away in a few minutes. Last weekend when driving in slush, this started again and the transmission did not start to work properly even after I got it home.
So I towed it to a local mechanic. He looked at it and really didn't seem to want to get into it. He said that the tramsission was failing and he thought it was internal. He did not do a diagnostic. The fluid level is fine and the fluid is a new pink red colour. The whole transmission is encased in steel so water cannot be getting into it.
After hearing that the transmission was written off, I went to pick up the Jeep at the mechanics shop and when I drove away, the transmission worked again - smoothly shifting and perfectly on time.. Whats going on? Its directly related to something getting wet as the issue occurs immediately upon being spashed with water. Its been doing this for a year. Any help greatly appreciated.