My 87 Acura Legend with 210,00 miles has an automatic transmission slipping problem. Car will not start moving when in the D position (slips), but if i shift manually to 2 , then S3 , it shifts ok except for some shuttering when shifting to D at about 35 mph. It also does not lock into Park when shifting to P position( car will roll when on a hill.) The shift cable and adjustment are ok. The S3 light does not blink and there are no codes stored. The trans fluid was changed 5,000 miles ago and level and condition are both good.( I have only used Honda fluid for the life of the car and change it every other oil change.) I removed the shift solenoids to find all of the screens clean and all solenoids clicked when 12v applied. At this point i realize i probably have an internal problem (possibly bad clutch pack?) My question is why doesn’t the parking pin lock? Is this related to the slipping problem?
I don’t think your shift cable is in adjustment. Everything points to it being out of adjustment.
Maybe if we’re patient Transman will weigh in with his expert opinion on this. Transman?