In an attempt to keep my car somewhat healthy as it is sitting waiting for me to install a new clutch, Helicoil in wheel bearing housing and general cleaning I decided to start and run the engine for a while. I noticed that the alternator wasn't spinning at idle. Is this normal? From what I understand the ecu makes changes to the output of the alternator based on electrical requirements from various systems on the car but it seemed to me that the alternator shouldn't be standing still. I don't really know however to be honest thus thanks for taking the time to help me understand this.