[s-cars] Heater Control Temp vs Temp Gauge

[Vincent Frégeac]

Hi Jonathan,

I'm a bit surprised by your comment about the behaviour of the coolant
temp. on the heater control. Based on the Bentley, the Heater Control
takes its temperature from the ECT G62, at the back of the engine. This
sensor is on the hot side of the T-stat and so, should see a gradually
rising temperature. This is confirmed by the fact that you'll see the
fan speed react to the engine temperature much before the coolant temp.
reach the T-stat triggering temperature, either 82C or 87C depending on
your T-Stat. And this is good news in winter!

The temp gauge take it's temp from the ECT F76 which is on the coolant
pipe connected to the radiator top, more or less on the cold side of the
T-Stat. So the temp gauge should react to the T-stat and behave as you
described but not the heater control.

May be some other lister could give us their experience about this.



Vincent.

-----Message d'origine-----
De : s-car-list-admin at audifans.com
[mailto:s-car-list-admin at audifans.com] De la part de J. Khang
Envoyé : 12 décembre 2002 15:30
À : s-car-list at audifans.com
Objet : [s-cars] Failing thermostat - thanks

An observation that might be useful for anyone else
wondering about their thermostat is that the
temperature reported by the climate controller should
initially stay completely static whilst the car warms
up. It will then rise rapidly once the coolant gauge
approaches 90C.


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