The engine temp on my 300D never warms up; it used to get over 80 and stay there no matter what the outside temps, but now it doesn't even get to 40 regardless of the weather or how long I drive it.

I was thinking the thermostat was stuck open. Any other suggestions?

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- Brian


1989 500SEL Euro
1966 250SE Cabriolet
1958 BMW Isetta 600