[Main 95 Bulletin Board | BBFAQ | Prev by Date | Next by Date | Post Followup ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos Fact of Nature, not a design flaw Like This Post: - Subscribe to Daily Digest for this Bulletin Board Posted by MI-Roger [Email] (#882) [Profile/Gallery] (more from MI-Roger) on Mon, 20 May 2013 09:30:46 In Reply to: Re: Two huge differences between you two, DT, Sun, 19 May 2013 19:25:22 Alert me when someone posts in this thread: Members do not see ads below this line. - Help Keep This Site Online - Signup

The temperature gage warns you if your coolant is hot while the Low Coolant message warns you that you have insufficient coolant. The temperature in every engine (except the very first generation Vega engines, which were subsequently corrected) is placed to allow accurate temperature readings through the normal range of coolant levels.

However a major leak can & will cause the coolant level to drop below the low limit of the normal range. When the sensing element is seeing only air in the coolant passages of the engine it has no way of sensing the coolant temperature. Locating the sensor lower in the bock would be of no benefit since it would no longer indicate temperatures in the higher elevation components which see the most heat. Two sensors would not benefit because the top one will run dry with a coolant leak and the driver would 'assume' the good reading of the lower sensor meant they do not have a problem.

The only answer is to watch the gages and respond to the alarm messages. Hopefully things are OK with your car. Just remember that the temp gage cannot be considered accurate when you have a low coolant level alarm.

_______________________________________
Saabs owned:
2008 9-5 Aero Sedan, sold at 227K miles
2006 9-3SC 2.0T - Wife's daily driver
2000 Viggen Convertible - Sold May, 2022
1964 Quantum IV Formula Car - Retirement project
2000 9-5lpt Sedan, sold at 318K miles

• HELP: broke down near Richmond (coolant?), DT, Sat, 18 May 2013 08:39:11
  • Re: HELP: broke down near Richmond (coolant?), Update #2 (all fixed), Tue, 21 May 2013 15:28:49
    • I have to take back that shop recommendation in NoVA, DT, Thu, 30 May 2013 09:39:13
  • Update #1 (got it in for service), DT, Mon, 20 May 2013 07:48:52
  • Re: HELP: broke down near Richmond (coolant?), DT, Sat, 18 May 2013 08:52:24
    • Re: HELP: broke down near Richmond (coolant?), bill h., Sat, 18 May 2013 09:39:05
      • Made it home (some notes and observations), DT, Sat, 18 May 2013 13:24:25
        • Re: Made it home (some notes and observations), SWEDECAR , Sat, 18 May 2013 14:08:49
          • Stunt or no stunt, Boris Bubbanov, Sat, 18 May 2013 14:17:16
            • Two huge differences between you two, SWEDECAR , Sun, 19 May 2013 08:34:20
              • Re: Two huge differences between you two, DT, Sun, 19 May 2013 19:25:22
                • Fact of Nature, not a design flaw, MI-Roger , Mon, 20 May 2013 09:30:46 <-- Viewing This Message
                  • Then there should be an oil temp warning, DT, Mon, 20 May 2013 10:39:21
                    • Can't argue with that, MI-Roger , Mon, 20 May 2013 12:17:16
                    • And now the temp gauges are disappearing too, SWEDECAR , Mon, 20 May 2013 11:45:45
                      • Re: And now the temp gauges are disappearing too, Larry West , Mon, 20 May 2013 13:09:16
                        • Re: And now the temp gauges are disappearing too, Bruce M, Tue, 21 May 2013 08:43:13
                        • Unlocked SID, MI-Roger , Mon, 20 May 2013 13:40:16
                • Re: Two huge differences between you two, SWEDECAR , Sun, 19 May 2013 20:20:02
            • Uh oh, DT, Sat, 18 May 2013 16:25:50
      • Re: HELP: broke down near Richmond (coolant?), Bill h., Sat, 18 May 2013 09:58:01
        • Caddy Catera is same part., Noel, Mon, 20 May 2013 05:36:28
        • Re: HELP: broke down near Richmond (coolant?), pme , Sat, 18 May 2013 17:26:38

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• Prev by Date: before ordering, at least perform ACC self-calibration, AeroEd, Mon, 20 May 2013 09:24:28
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