Want this question answered?
The transmission shift solenoid on a Volvo s80 is located in the gearbox. It is inside the side cover and not easy to reach.
the spark timing has to be adjusted (on older vehicles only)
Volvo is a great technology in vehicles. Shift light indicator mean the indication given, that the vehicle is now comfortable to shift the gear. For Example, the Volvo car is moving on 60 mph and you are moving on 4th gear the shift light indicator will blink reminding now you can shift a gear further mean you can move by gear 5.
Shift into the far left corner.
P0785 Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
So that you don't shift the gear selector by accident
Trouble code P0750 means: Shift Solenoid A
Your shift lock solenoid may be bad.
Has recent work been performed?
VERY CAREFULLY.
A common problem with alot of Volvo's is the Overdrive. Basically the high gear. If it wont shift into high gear it means that the "Overdrive" is activated and won't shift into high gear. You need to see if there is a little upwards pointing arrow on your Dashboard Cluster. If there is then you need to replace your Overdrive Solenoid.
kick down cable to down shift tranny on your throttle linkage may be broken somewhere down the line if not then try changing tranny fluid and filter if filter is dirty they don't like down shifting at all .................if it backfires right after you try to get it to down shift then its just getting too much gas and isn't in the rpm range to take that much fuel