Just so I understand this, is it abnormal for the compressor to cycle on and off periodically, or are you guys referring to the blower fan than blows cool air into the cockpit? I noticed my compressor cycles on and off every minute or so, but seems to cool fine, even on 107 degree days. Is this abnormal for the compressor to cycle?

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1993 400E, 256,000 miles (totaled)
1994 E420, 200,000+ miles
1995 E420, 201,000 miles