SL/R230: COOLANT THERMOSTAT CODE
i have shown this to a few mechanics they don't think it's the convertors
could it be pressure sensors?



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Last edited by goth; Mar 29, 2019 at 11:30 PM.
Have you watched your coolant temperature to see if it is running low? Low coolant temperature may not be quite as obvious now that the weather is warming up. But I was able to verify that the thermostat was not functioning correctly by watching the coolant temperature, and I noted that it was running lower than it previously had.






