Whistle on startup

[SteveCanyon]

Originally Posted by Arctic91

AIR system most likely... same with my '91. You can probably feel the pump vibrating when it's operating and change when it turns off.

Scott

I also occasionally hear a sound that sounds like cards being shuffled (while driving) that lasts about a second, is that the AIR pump?

[Arctic91]

I don't think that there is any reason that the AIR pump would come on after initial start-up. Sounds like that is a completely separate noise/issue, though?

Scott

[BOB HDZ]

Mine made that noise it was a plenum bolt that I forgot to tighten!