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Trip computer reading wierd 850

posted by  Rick2/850's on  Wed Mar 15 19:14 CST 2006
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last visit: Thu Apr 25 15:59 CST 2013
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1996 850 turbo. My speedo and od are fine car is US based. when I bought this one Sunday the outside temp read in celsius, no problem I pushed the m and h at the same time and got Farenhiet. Problem solved, NOT. It appears the avg miles per gal, miles, and mpg are in liters or metric. Now for the kicker. The instant miles per gal go up to 16-19 when I floor it. and go down to 6-10 when I am coasting. My ave is around 10. the opposite of what one would think. What's up, did someone reverse a set of wires? The car appears to be getting around 20-22 mpg; by using the method of computing mpg prior to trip computers. You know, use a calculator and divide miles by gallons. HELP








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    Trip computer reading wierd 850

    posted by  KlausC on  Thu Mar 16 04:48 CST 2006
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    last visit: Fri Oct 24 10:15 CST 2014
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    LOL. Seems PO bought a new computer from Canada or Europe. Your computer is based on Kilos and Liters! There is no button to push to change it to Miles and Gallons.
    Compare the miles driven on the trip odometer with the amount driven on the computer. Then divide the computer 'miles' by 8 and multiply that result by 5 and you should have the same number of miles on the odo.

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








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      Trip computer FIXED 850

      posted by  Rick2/850's on  Sun Mar 19 15:44 CST 2006
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      last visit: Thu Apr 25 15:59 CST 2013
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      Disconnected battery for about 1 hour and now it is fine . reading in U S








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        Trip computer FIXED 850

        posted by  KlausC on  Mon Mar 20 04:37 CST 2006
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        last visit: Fri Oct 24 10:15 CST 2014
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        Now you have my curiosity. That means the PO did something to the computer to get Km and Liters, and when you "re-booted" the computer, it went back to its original state.
        I wonder what he did, and how he did it. My pocket data booklet has nothing in the A7 port for that. Perhaps when you get your PC conected you can figure this one out. Some of the Europhiles on this site might want to be able to jump back and forth between MPG and L/100Km.

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








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      Trip computer reading wierd 850

      posted by  Rick2/850's on  Thu Mar 16 05:11 CST 2006
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      last visit: Thu Apr 25 15:59 CST 2013
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      your right again. when my od says 1 miles my trip says 1.6. 1.6/8x5=1. can it be changed with a scan tool or by the dealer? I don't mean the unit ,I mean the software. Thanks Rick 3/850's 94,95,96 turbo sedans








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        Trip computer reading wierd 850

        posted by  KlausC on  Thu Mar 16 07:12 CST 2006
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        last visit: Fri Oct 24 10:15 CST 2014
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        I never did like that snobby dealership in your area, but you need to call them and ask. I didn't see anything in the pocket data booklet that would let you change the setting. At least it doesn't affect drivability.
        Have fun,
        Klaus
        --
        (V♂LV♂s 1975 164, 1995 854T, 1998 V70R)








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          Trip computer reading wierd 850

          posted by  Rick2/850's on  Thu Mar 16 07:18 CST 2006
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          last visit: Thu Apr 25 15:59 CST 2013
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          which snobby dealership? barrington volvo. the dumb ass said to hold the m and h button. It doesn't do crap except change the time and temp








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            Trip computer reading wierd 850

            posted by  KlausC on  Thu Mar 16 08:01 CST 2006
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            last visit: Fri Oct 24 10:15 CST 2014
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            Open the door and look at the build plate. If there is a maple leaf on it, it is a Canadian car!
            I just got off the phone with Borton, my local nice guys, and they said it would be very expensive to swap in an American instrument panel. There is no programmable memory.
            Sorry,

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








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              Trip computer reading wierd 850

              posted by  Rick2/850's on  Thu Mar 16 18:52 CST 2006
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              last visit: Thu Apr 25 15:59 CST 2013
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              Called Patrick Volvo The service guy asked a tech; might be able to do it myself, but the tech says it needs to be programed and needs a PIN # (?). Boils down to they will do it for $54.00. Thanks you all. I am going to buy a obd2 and see what I can come up with. This is not the end of the world; the car runs great. yo, Klaus or any one else, which one shoud I get (ob2) ?








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                OBDII 850

                posted by  KlausC on  Fri Mar 17 05:18 CST 2006
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                last visit: Fri Oct 24 10:15 CST 2014
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                If you have a laptop, try this:
                http://brickboard.com/AWD/index.htm?id=923978

                Laptops with a connector are best, easier to program and monitor all systems on your car.
                There is a guy in the Brit Volvo Club who builds his own scanner! Most scanners cost less than $150, but you will have to figure out what features you want/need.

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








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                  Guess What? TRIP COMPUTER 850

                  posted by  Rick2/850's on  Sun Mar 19 15:36 CST 2006
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                  last visit: Thu Apr 25 15:59 CST 2013
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                  I disconected the battery to do some ipod satilite wiring, when I put it back together the frickin' trip computer is reading in U S not metric. Note to self... a good old battery diconect can save alot of typing.








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    Trip computer reading wierd 850

    posted by  someone claiming to be ksg on  Thu Mar 16 02:44 CST 2006 [RELATED]

    Sounds like maybe the thing is reading in liters per 100 km. Don't the Europeans specify their fuel usage in this or a similar way (inverse of the US way?)








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      Trip computer reading wierd 850

      posted by  Rick2/850's on  Thu Mar 16 04:21 CST 2006
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      last visit: Thu Apr 25 15:59 CST 2013
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      you may be right. any idea how to change it to the U S mode. I got the temp. changed to ferinhight sp?








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        Trip computer reading wierd 850

        posted by  jmiked on  Thu Mar 16 15:42 CST 2006
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        last visit: Thu May 28 15:18 CST 2009
        [RELATED]

        According to the manual, the trip computer can be toggled between degrees Celsius and Fahrenheit, and 12 hour and 24 hour time, but not miles/km displays.

        It's apparently hard-wired into the unit depending on which country it's going to. You'll have to get a different driving computer unit.

        I may mis-remember this, but several years ago I was shopping around for a computer to put in my GLT and the US and Canadian ones had different part numbers.







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