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Speed meter and transmission problem, please help me 850 1995

I have a volvo '95 850 turbo wagon. I have speed meter and transmission problems. Usually it happends when i start my car after parked for a while, especially in the morning. the symptom is that the transmission stacked in the 1st gear and the speed meter is not working when it is happening. when the speed meter starts working, the transmission started to work just fine. and i do not have trouble rest of my ride. i do not see the blinking arrow on the instrument. (usually it blinks when a car has transmission problem) how do you guys think?? thank you.








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    Speed meter and transmission problem, please help me 850 1995

    I'm guessing here, but it could be the transmission speedometer sensor.
    Might be a loose or bad connection or a poor ground wire.
    First, check the connections to make sure they are clean and not corroded.

    You say it happens early in the morning. That's when the humidity is high and condensation might have taken place on or near the sensor connection. If the connection is poor, the condensation might aggravate the situation.

    This sensor sends pulses to the speedometer and also is used to synchronize part of the transmission computer system, telling it what speed is taking place. The signal is also used as part of the cruise control circuitry. If the sensor is bad or if the connection to it is poor, then both the transmission and the speedometer will provide strange reactions.

    FCPgroton has a replacement for about $75. P/N 9148788
    http://www.fcpgroton.com/volvo850eng_electrical.htm#coil

    good luck.







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