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Now do you get any fault code reading ??? in your car in the engine compartment there 2 small box OBD stand for on board self diagno..
it will tell you what is wrong with the transmission...
first change the transmission fluid these 850 have many problem with gear shifting.. change the fluid.. very easy you can flush it out without get under the car...
do you have the airow flasing on the dash board ??? if you do this mean your NPS Your Nuatrual switch is bad this will put the car in the limp mode run very slow it will not making it pass 25 mph...
this swithch can be replace easy ... the part cost $75 this is the main problem that dealer will sell many people a new transmission when this switch is bad... every easy to reaplace...
Now to learn how to read the code and flush the transmission and replacing this switch... go to this website www.volvospeed.com click on maintain and it will show you all the detail with picture step by step..
great site for 850 only.... 93-95 model we have the OBD tell us what is wrong with the car without take to dealer..
hope this hepl but the transmission now....
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