Just changed the thermostat cuz the motor
seemed to be over heating. But now theNeedle
says that its overheating and the motor seems fine
also the second fan ( I'm guessing) won't shut off
I'm assuming it's a sensor of some kind
May still have air in the system bleed air from system like this remove cap from overflow tank fill with antifreeze to full mark leave cap off and start vehicle and let idle you will notice level in tank start to rise this is normal once thermostat starts to open level in tank will drop add more antifreeze to full mark then put cap back on.
Did that still doing it