Thread: Concerned over M103 engine temperature
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Old 09-07-2009, 08:37 PM
alienman alienman is offline
'90 300se, '95 c280
  
Join Date: Oct 2005
Location: Honolulu, Hawaii
Posts: 112
Hey ps2cho,

I think the two most common thermostats are the 79c and 87c. I'm not sure where my mechanic got the 75c unit, but that one and its replacement have the temperature rating stamped on the thermostat. I bought the replacement at a local shop so I could examine it before purchase.

My fan clutch engages in town a lot as well, but I think the fan clutch is operated mechanically. If I'm not mistaken, the sensors on the head are for CIS, gauge, and AUX fan.
Last edited by alienman; 09-07-2009 at 08:44 PM.
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