Sounds like the fuel distributor. Mine makes a steady bzzzt sound on my
On Wed, 6 Sep 1995, Nick Craft wrote:
> >>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?
> >>Thanks much for any info!
> >Most likely Fuel Pump. If it is only noticeable at idle, probably
> >not a big deal. If it's loud and unsteady, fix it now! before it screws
> >up other stuff further down the line. There a quie a few people who
> >can diagnose in more detail if needed........ :-)
> >Mike L,
> >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.