Hi All,

After driving on the freeway for about an hour with just a little over 80degC on the temp gauge, the resistance between the two pins on the CTS is reading 'bout 600 ohms. According to the manual, 80degC should be 'bout (293-370 ohms) and should be a little lower if over 80degC.

Is this be a bad sensor and should be replaced?
How does this effect the KE systems when a false (lower) temp is read by the system via bad sensor?
Do sensor like these deteriorate slowly or abruptly?

How dependable is the temp gause in the instrument cluster and where does it get its info? I need a baseline for coolant temp.

thanks...

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sjsfiji

'87 W124 260E (DD)
98K orig. mi. @7/15
CLK 7-Spoke Forged Wheels
Neuspeed springs/Bilstein Sport
4/3 bump (F/R)

'97 993 Carrera
106K orig. mi.
Always driven like it's stolen

I don't know that info, but as cheap as it is ($30), I replaced mine while fixing other coolant related issues. Cheaper and less effort than diagnosis...

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2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car