Grrrr....Woo-Woo Noise From Fuel Filler Door is Back.

[Gelbster]

Originally Posted by Run

I have had this issue for 3 YEARS. Recently (last year) my fuel sending unit started leaking. .... Mine would always do it at steady rpm let off the gas or brake and the sound was gone. I hope to get around to getting it fixed in the next month or so will be interesting if that damn sound goes away.

Sounds like this is vacuum related ? Steady rpm = low vacuum, idle/over-run =suddenly much higher vacuum