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Engine still revs up when first started.... 850 1996

posted by  trey on  Thu Jul 17 15:52 CST 2003
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last visit: Sat Apr 14 01:19 CST 2001
[RELATED]

Our turbo wagon revs up to 2200 or so for a few seconds then back to normal idle when first started. I've checked all the vacuum lines I could find and cleaned throttle body per suggestions, but still the same thing.

It's always done this since we bought at 70k mileage. Is this normal? Seems like it shouldn't do that.







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    Engine still revs up when first started.... 850 1996

    posted by  someone claiming to be doug on  Wed Jul 23 11:00 CST 2003 [RELATED]

    I have the same trouble - 1994 T5 and so does a colleague - 1996 T5. Mine didn't always do it, it is not good for the engine to do this. must get a solution.








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    Engine still revs up when first started.... 850 1996

    posted by  cousineddy on  Fri Jul 18 03:39 CST 2003
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    I have a '95 850 Wagon and mine has done that sense day one. A Volvo tech. explained it to me and it goes somthing like this: blah...blah...yada...yada...it's normal and it will not hurt your engine. And don't touch the gas pedal before or during crancking. Good enough for me. I've goten used to it and it doesn't bother me any more.
    S








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    Engine still revs up when first started.... 850 1996

    posted by  someone claiming to be Punxsutawney Phil on  Fri Jul 18 01:51 CST 2003 [RELATED]

    Mine does this - sometimes - but I think it's usually when the edge of my Size-13 is resting on the gas pedal.

    This sometimes happens when I start my wife's Honda Oddy, too. Never with the ancient (and tiny) Porsche 944, tho.

    -Punxsutawney Phil

    '98 V70T5M, 122,222 paranoid miles







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    Engine still revs up when first started.... 850 1996

    posted by  Rick850R on  Thu Jul 17 16:06 CST 2003
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    It is normal. My 97 850-R has done it since new. I think maybe why it does this is because when the engine first fires up it is running extremely rich since it is cold and so the computer is compensating for the rich mixture until it runs sufficiently well. All of this takes only a few seconds.

    My .02








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      Engine still revs up when first started.... 850 1996

      posted by  someone claiming to be john on  Thu Jul 17 20:11 CST 2003 [RELATED]

      my 850 t5 does this, the only way to stop it is to turn the engine over a few times DON'T LET IT START!! and then start it like normal, this stops the over revving and any damage that might be happening.








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        Engine still revs up when first started.... 850 1996

        posted by  cancerman on  Fri Jul 18 08:14 CST 2003
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        last visit: Sun Oct 7 17:36 CST 2007
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        Dosn't this also cause the engine to have to crank longer without lubrication?
        --
        89 764 GLE 150k/ 86 745 GLE 240k








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          Engine still revs up when first started.... 850 1996

          posted by  Rick850R on  Fri Jul 18 09:32 CST 2003
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          Lest ye forget that the oil check valve keeps oil in the engine.








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            Engine still revs up when first started.... 850 1996

            posted by  cancerman on  Fri Jul 18 12:36 CST 2003
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            last visit: Sun Oct 7 17:36 CST 2007
            [RELATED]

            I am the student, and you are the master.
            --
            89 764 GLE 150k/ 86 745 GLE 240k








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              Engine still revs up when first started.... 850 1996

              posted by  Rick850R on  Sat Jul 19 09:44 CST 2003
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              The rude comment was not necessary. It is a matter of fact that the oil filter uses a backflow valve to keep oil in the engine for better startup performance. I was trying to be nice about it, --you weren't.








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                Engine still revs up when first started.... 850 1996

                posted by  cancerman on  Sun Jul 20 02:40 CST 2003
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                last visit: Sun Oct 7 17:36 CST 2007
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                Whoa... You've got me all wrong. I was *not* trying to be rude. I was paying you a compliment. You are obviously more knowledgeable of 850 engines than I am. I was simply admitting my fault, and your correctness.

                In all honesty, since this is my first 850, and first glimpse at the DOHC engines, I'll be relying on you (and others like you) for technical information.

                I appologise for any insult you may have taken.
                --
                89 764 GLE 150k/ 86 745 GLE 240k







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