It seems we are in the same position. I'm dealing with an 86 p/u 22R auto myself. The vacuum diagram from All Data (which I have) is wrong I know that. The one that Mitchel offers is from what I can tell a little different in a couple of places, and as of right now seems to be the cause of my problems. One key thing is the motor must be 100 % right in the way it runs, or it will affect the shifting of the transmission. Shift points, line pressure and the alike will and can be effected by a bad or poor running motor. If the trans has a vacuum and or electronic control to decide shift points that will be the source of your problem assuming the transmission was working correctly prior to now. The only help I can offer you at this point is to find a auto repair place that has the Mitchel system, and get the vacuum diagram from there on a print out. I cant do a copy and paste from my All Data screen to here. It wont allow that. It will go to paper but not screen. And as mentioned mine All Data diagram is WRONG. !! Thanx A/D for having me chase my tail for a day and a half!!
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