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-   -   Relation Between Emissions & Water Temp Sensor? (https://www.revscene.net/forums/579212-relation-between-emissions-water-temp-sensor.html)

autobacs 06-14-2009 02:50 PM
Relation Between Emissions & Water Temp Sensor?
 
I'm wondering if there's any correlation between an aircare-failing vehicle and a possibly malfunctioning coolant temperature sensor.

Does the coolant temperature sensor have other purposes than simply controlling the needle on the water temp. gauge in the cluster?

nickmak 06-14-2009 06:35 PM
the coolant temp sensor is for the ECU, if it's malfunctioning then the ECU will think it's cold, and it will run rich. there is a separate sensor for the gauge, usually 1 wire

Lomac 06-14-2009 06:49 PM
It can also trigger a relay that will kick your "high" fan on/off.


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