pravinkpant@hotmail.com wrote:
> Exactly, in other words, the tone was there whether the engine was on
> or off. This is why I am ruling out a fuel pump. I can't think of any
> other buzzers or beepers that the car has. The lead to the positive
> battery terminal did look as if something aftermarket had been
> installed (an alarm system perhaps?) so I'm going to further
> investigate to see if I can find anything. I'm still baffled though,
> because the tone was way too faint to be an alarm, yet too loud to be
> a keys-in-ignition buzz.

It was the fuel tank breathing in and the pressure (vacuum) relief
thingy caused the sound. Hint - almost completely close the back
of your throat and now breathe in with effort - you'll get a similar
noise!


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