did search just need quick answer
ok my 525i overheats at idle. fan spins with resistance so i dont think its the clutch. just nearly took apart the entire engine cleaning and what not new head gasket. new thermostat, just flushed the coolant + flush cleaner. now when it overheats at idle it will go up to red and go back down, kind of like a cycle within 5 or so minutes . also if it goes up to red or near i gas it a few times and it goes back down. im thinking air pocket. am i right? if it is whats the best way to bleed it out?