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1994 Volvo 940

 

Question: wont go over 40 mph & doesnt seem to shift od light on when od isnt

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trok1833, Greenfield, MA, October 04, 2012, 11:29
 Rookie

also have heard some hissing noise as well, what is this caused by??? Thank you for your time

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  • Answer #1

    Bret Bodas from RepairPal Test Shop, October 05, 2012, 12:37
     Master

    It sounds like you have a few issues going on here.
    1. Won't go over 40 mph. There are several possibilities, could be a failing fuel pump, mass airflow sensor or fuel pressure regulator, or something else. Need a proper diagnosis to determine what is causing this.
    2. OD Light: Most likely the OD relay is failing, very common issue on the 940.
    3. Hissing noise: noises need to be heard and an inspection performed to determine where it is coming from, otherwise it's a very wild peculation, and will always be wrong.
    An experienced Volvo tech can figure these things out fairly easily, as these are fairly common complaints for this vehicle.

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    pushrod, October 06, 2012, 03:03
     Master

    Hissing noise, any problems with the cat. on these models?

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    Bret Bodas, October 15, 2012, 09:26
     Master

    No, the catalytic converters didn't have many issues at all.

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  • Answer #2

    c will December 10, 2012, 09:04
     Rookie

    i have just had those same symptoms, i replaced my transmission filter first
    actually i seen shavings on the filter but i replaced it anyway it helped but i had to replace the trans

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