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Weird Starting Situation V70-XC70 1998

posted by  Mike L. on  Mon Dec 12 00:55 CST 2005
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Yesterday, while starting my wife's '98 XC some really strange (even for Volvo) things happened. On the first attempt, the car started and immediately died. After several more cranking attempts, the engine finally started and ran rough for a while and then smoothed out to the normal idle. Now, here is the weird part, when it finally started, the the instrument lights would come and go off by themselves. This happened several times even though the light switch was in the OFF position. I shut the engine down and restarted it, everything was fine and there have been no further problems after driving it several times. This car never had any previous starting problems but my wife recalls one other time when the dash light flashed on and off by themselves. Does anyone have a clue as to what may be going on here?








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    Weird Starting Situation V70-XC70 1998

    posted by  KlausC on  Tue Dec 13 09:01 CST 2005
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    last visit: Fri Oct 24 10:15 CST 2014
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    There appear to be 2 unrelated problems. I don't think the lights and hard start are from the same problem.
    The occasional hard start could be from a slow responding AMM (cleaning the elctrical plug might help) which contributes to too much gas in the cylinder, making for a harder restart until the plugs are burned off. Make sense?

    The light switch may be going or just have a loose prong, bad coupling with the wires. Mine died a couple of years ago and was fixed. Just pop it out of the dash and have a look at the back.

    Klaus
    --
    (V♂LV♂s 1975 164, 1995 854T, 1998 V70R)








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    Weird Starting Situation V70-XC70 1998

    posted by  someone claiming to be ksg on  Tue Dec 13 07:47 CST 2005 [RELATED]

    Dirty or worn ignition switch contacts? Frequently reported on the 850 at least.








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    Weird Starting Situation V70-XC70 1998

    posted by  MadeInJapan on  Mon Dec 12 16:53 CST 2005
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    Sounds like a draining battery...normal if you cranked and cranked and cranked. If the battery charges up after some driving and this doesn't happen again, I wouldn't worry about it...but could be a sign of a dying battery...thus the starting issues to begin with.
    --
    1998 S70 T5 Emarald Green Metallic, 2004 V70 2.5T Ruby Red, Previous Owner of Black '94 850 Turbo Wagon. My cars have been running so well lately they've got me worried.








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      Weird Starting Situation V70-XC70 1998

      posted by  Erik A on  Fri Dec 16 02:57 CST 2005
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      Start/dies immediately can also be caused by a faulty key. The microchip inside does not send the correct code to the immobilizer... Got one myself that fails occasionally








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        Weird Starting Situation V70-XC70 1998

        posted by  Mike L. on  Mon Dec 19 05:06 CST 2005
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        I believe you are correct about the immobilizer/key being the problem. I didn't think that the '98 had this feature but I checked my electrical manual and, sure enough, its in there. My '99 V70 had a similiar incident a few years ago but without the flashing dash lights. Taking out the key and trying it again did the trick. Still can't figure out what causes the the key to be "misread" on rare occasions.







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