Hi:
Just bought a used 2003 Toyota Sienna.
When I turn on the ignition, prior to actually cranking the engine, I hear a
1-second humming noise from under the hood. I called the Toyota dealership service dept. from where I bought it and they tell me that it's coming from a little vacuum pump meant to clear out some fumes prior to or at ignition.
Any comments?
Thanks in advance,
AJ.