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Temp Guage Reading 200 1991

uid 30890's pic
posted by  dnvolvo on  Sun Mar 27 04:00 CST 2005
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last visit: Wed Jun 16 03:19 CST 2010
[RELATED]

Temp guage reading is about 1st 3rd of guage or less.
1. What is the normal reading -- should it be about half way when warm?
2. What is the actual corresponding coolant temperature at this reading?
3. Also, in a moderate climate approx how long should it take for the vehicle to reach normal operating temperature?

Thanks


--
dnvolvo '89 765T - '91 245








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    Temp Guage Reading 200 1991

    posted by  Volvodad on  Sun Mar 27 04:37 CST 2005
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    last visit: Thu Oct 23 16:18 CST 2014
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    1 - fully warmed up should be halfway (9:00)
    2 - This corresponds to about 195F (90C)
    3 - about 5 minutes depending on how hard you are working the engine.

    Volvo incorporated a "smoothing" circuit into the gauge from about 1986-on to keep it from fluctuating as engine temps changed slightly. This was to keep nervous owners from worrying. This circuit is failure prone and then gives odd readings. IPD offer a "kit" to bypass this and return the gauge to pre-86 operating system...you can do the same with a piece of wire and a soldering iron in a few minutes.

    Now, given all that, the most likely possibility for your low reading is a failed thermostat. These are about $10 from FCPGroton.com, and I'd recommend the 92C unit.
    --
    Bob (son's 81-244GL B21F, dtr's 83-244DL B23F, 'my' 94-944 B230FD; plus grocery-getter Dodge minivan, hobbycar 77 MGB, and a few old motorcycles)








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      Temp Guage Reading 200 1991

      posted by  sstef on  Sun Mar 27 10:15 CST 2005
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      last visit: Mon Sep 1 10:40 CST 2008
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      poster mentions moderate climate. Did cooler thermostats get used for that? I'm getting my tstat checked out tomorrow as I suspect it is a cool one.
      --
      Stef -- 1981 245 B21A SU M46 chrome roofrack 320000km my volvo pages








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        Temp Guage Reading 200 1991

        posted by  jwalker on  Mon Mar 28 02:43 CST 2005
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        last visit: Fri Jun 6 08:39 CST 2014
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        From what I've read here, the cooler t-stats are meant for warmer climates like the southern U.S. For us folks in the northern U.S. and Canada the warmer t-stat is recommended...

        --
        90 244DL 1/4 million miles - original engine/drivetrain :)







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