Quote:
Originally Posted by jay_bob
Are you referring to the electric fan in front of the condenser or the belt driven fan on the water pump?
Electric fan operates off coolant high temperature or high a/c system pressure.
Mechanical fan has a viscous clutch that normally engages on high air temperature but on startup the fan will typically operate briefly (due to the oil pooling in the unit at rest?).
Does it roar like a garbage truck? If so that is normal and means you have a properly functioning fan clutch.
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I hadn't looked at which fan but will try to check tomorrow. I'm just guessing it is the one in front of the condenser because it's pretty loud. Even if it's working as a properly functioning fan clutch as you say, it's intermittent. Sometimes it will be on at a cold startup, sometimes it won't.