It's a known problem in these cars, and will generally fail and leave you
stranded at any random time.  Most just bypass the switch.

I think the same type of switch was used in a lot of cars in the 80's.  Ford
used someone similar.  If you really want to have a working switch, you might
try looking at other cars from the same era.

Alfa (and others) replaced this switch with the dreaded combi-relay.

The goal of such devices was to make the fuel pump stop pumping fuel if the
car was crippled or the engine wasn't running.  These devices seem to cripple
a lot of cars and engines.

bs

Sent from my iPad

On Feb 21, 2013, at 9:32 AM, Steve Cole <[email protected]> wrote:

> The cylindrical gray inertia switch in my 1977 Alfetta GT has failed.  It no
longer will pass current to the fuel pump and I've had to wire around it to
keep running.  I bought a replacement from a junker and it is just as bad.  Is
there anything that can be done to rehabilitate it or is there a suitable
alternative switch available?  I doubt there is anything Alfa-specific about
it; it is simply mounted to the firewall with two wires attached.  Do all cars
with electric fuel pumps have a similar device?  Does anyone know a suitable
substitution?
>
> Steve Cole
> 1977 Alfetta GT
> 2012 Alfa Romeo Stradale (2 wheels)
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