Turbo 400 upshifting too soon
My turbo 400 in my CJ is upshifting way too soon. (It's in 3rd at about 15mph.) If I manually shift, it shifts nice and hard. I replaced the modulator with one of the adjustable ones but no matter what adjustment I make the problem doesn't go away.
Somebody told me that there was some kind of switch that might be sticking, causing the early upshifts.
The fluid and filter are new, there was no crap in the pan when I changed the fluid, and yes, the o-ring is installed correctly on the filter tube.
Anybody out there a t-400 guru?