Re: Buzzing noise in engine compartment (was: no subject)

[zm@mhcnet.att.com (Zafer Mehmood [209])]

> 
> >>I noticed a medium level buzzing noise coming from the passenger
> >>side rear of the engine compartment on the 5000S Turbo, is this normal?
> >>What is it?
> >
> >Most likely Fuel Pump. 
> > 
>> [stuff deleted]
> >
> >With 2 89 100's that both buzz at idle.......both with over 90k miles
> >
> 
> But why would the fuel pump cause a buzz in the engine compartment?
> 						^^^^^^^^^^^^^^^^^^^
> The fuel pump is in the gas tank, ain't it? I still reckon its the
> frequency valve - which your '89 100 may not have, Mike - due to having a
> differential pressure control valve instead.
> 

The noise could be from the fuel distributor and/or injectors if its from
the passenger side engine compartment. This buzzing noise is normal.

Zafer