850GLT-new car, new questions

Discussion in 'Volvo 850' started by blurp, Feb 15, 2006.

  1. blurp

    blurp Guest

    Hi all,

    Goodbye 760, hello 850!

    I've had a new Volvo for almost 2 months before coming here with a
    question (that may be a record for me). Our new car is a 1995 850GLT
    with 160K km and is mainly like new.

    I have had one issue to deal with so far and that was tracing the lack
    of reverse lights (how did it safety?) and the occasional
    unwillingness to start in P (and having to jiggle the shifter in N to
    get it to catch) to a failing PNP switch which has since been
    replaced.

    I have two annoyances to deal with right now:

    1. This problem may be related to the PNP and that's what I'm hoping
    to find out here. In colder weather I find that once the car has been
    started and I step on the brake the shiftlock remains engaged. I can
    press the "shiftlock release" button and free it so this is still just
    an annoyance. In warmer weather I can feel the lock clicking off
    through the shifter. Also when I park I sometimes have to jiggle the
    shifter a bit before the ignition will release the key.

    So is this problem related to the fine adjustment of the PNP switch
    and its installation or is it likely that I just need to disassemble
    and lube something?

    2. All of the signals and lights on the EXTERIOR of the car work but
    about 75% of the time the left turn indicator arrow on the dash will
    not light. When it fails the red light above the hazard switch will
    flicker randomly (sometimes in conjunction with brake use). It has
    happened once or twice that the indicator will come on steadily
    instead of flashing but then cancelling+signalling again will rectify
    that.

    Is the relay that controls this likely to be the flaky bit and, if so,
    is it easy to test/diagnose/access/(fix)/replace?

    I guess I'll go looking for an 850 Haynes book too.

    Thanks in advance,
    blurp
    ps. as an aside, the replacement of the PNP resulted in the discovery
    that there was NO FILTER IN THE AIRBOX. I had driven it for at least 5
    weeks that way but I can't say how long it had been gone before I got
    the car. Any suggestions as to what I should do (besides put in a
    filter)? Is there likely to be damage now done that will reduce the
    life expectancy of the engine and, that said, do I get rid of this car
    ASAP?
     
    blurp, Feb 15, 2006
    #1
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  2. blurp

    Mike F Guest

    There's a microswitch that stops the shift lock solenoid from working
    when the brakes are applied except when the gear shift is in Park. This
    microswitch fails, causing the solenoid to not work at all.
    http://www.volvospeed.com/Repair/Microswitch.php

    Any time there's one switch causes some other random part to work, it's
    a problem with a bad ground. The electricity is finding the ground path
    through the other part.

    --
    Mike F.
    Thornhill (near Toronto), Ont.

    Replace tt with t (twice!) and remove parentheses to email me directly.
    (But I check the newsgroup more often than this email address.)
     
    Mike F, Feb 17, 2006
    #2
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  3. blurp

    blurp Guest

    Thanks Mike, the step-by-step seems like something I can tackle. As
    for the grounding, is it at all likely that the relay would be the
    first place to look for the problem? I'm reluctant to pull too much
    apart since everything else works so well... I don't want to make
    anything else worse!

    Any thoughts on the potential damage of running without an air filter?
    I may just be over-reacting to that one.

    Thanks again,
    blurp
     
    blurp, Feb 17, 2006
    #3
  4. blurp

    Mike F Guest

    Every electrical problem is unique. It may be obvious, or you may never
    find it, no matter how hard you look. If you have access to a relay,
    then it can't hurt to give it a try.

    As far as running without an air filter - some extra wear may have
    occurred. Change the oil and filter (since some dirt may have ended up
    in the oil) and hope for the best.

    --
    Mike F.
    Thornhill (near Toronto), Ont.

    Replace tt with t (twice!) and remove parentheses to email me directly.
    (But I check the newsgroup more often than this email address.)
     
    Mike F, Feb 20, 2006
    #4
  5. blurp

    James Sweet Guest


    Really depends on the air quality, if you're driving around in a dusty
    gravel pit with no air cleaner it would quickly turn the oil into
    lapping compound and wear down the engine in no time. Driving around on
    a clean road in a wooded area in the rain there's not likely to be much
    in the way of hard sandy particles in the air so it won't matter so
    much. I agree with the advice of install a new filter, change the oil
    and oil filter and not worry about it.
     
    James Sweet, Feb 20, 2006
    #5
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