How do I check the climate control servo on w116?
I have a 1979 300SD that does not have heat in any mode. Every button works and does as it should though. I hot-wired the water pump that is on the servo, and the pump did spin. Do you guys know what else I need to check to see if it is the servo before I buy a new one. (probably used though).
Thanks
David
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2000 Honda Accord V6 137k miles
1972 300SEL 4.5 98k miles
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