SO I finally got the part and changed the PNP switch. No change, except that if I rev vehicle quite high, it throws it into reverse for a second. I haven't changed the fluid yet. When I shift from Park to Reverse, it seems to trying to shift, but doesn't actually fully engage unless I rev it quite h...

Sounds a lot like the typical PNP switch to me. On another note, I see you're in Houston. Perhaps you'd be interested in coming out for the Texas Meet next month. Let me know if you're interested and I'll put you on "the list" :wink: . THanks for the offer. I'll try to let you know, that ...

How long has it been since the transmission has been serviced? It could be the PNP but it also could be something more serious. A trans flush may clear it up... Good Luck, T2 T2, The original owner kept very detailed servie records, and had all service done by Momentum Volvo in Houston (reputed to ...

The other day, my 850 GLT beign experiencing some transmission issue. Up util this point, I've noticed no problems with the transmission. I was driving along around 30 mph (residential area) and gave it a bit of gas to pass a vehicle, when it acted like it would not kick down into a lower gear. It a...