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Microswitch vs. PNP switch 850 1994

posted by  someone claiming to be whitewagon on  Thu Jun 15 19:15 CST 2006 [RELATED]

What are the main differences between symptoms of a failing microswitch or failing PNP switch?

Here's what I think:
Bad PNP switch-- one or all of these: Up arrow on dash, modes flashing, engine won't crank, CEL lights up.

Bad Microswitch: won't go in gear, ?, ?







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    Microswitch vs. PNP switch 850 1994

    posted by  mbsl98 on  Fri Jun 16 07:55 CST 2006
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Sat Feb 2 12:35 CST 2008
    [RELATED]

    Microswitch will keep you from shifting out of park into gear - it can be bypassed by depressing teh override btton on teh console and shifting with teh other hand. Has nothing to do with teh actual operation of teh transmission, only the movement of teh shift lever within teh console.

    One other symptom of teh PNP can be back-up lights that stop working (lights are controlled by the PNP). Also, PNP symptoms often include transmission going into "limp" mode, ie: only starting in third gear with lots of slippage.
    --
    Mike Sullivan ('95 855T (88k), '98 V70XC (92k), '95 855 NA (135k). Past Volvo's: '85 744 (256k), '86 245 (165k), '86 245 (195k), '88 745 (208k), '91 745 (196k), '93 965 (147k) .







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