"Jim Warman" > wrote in message
news:2xNAd.31163$KO5.7946@clgrps13...
.. Electric pumps "should" have some kind of Murphy device to shut
> them off in the abscence of oil pressure or rpm..... (think 'can't get out
> of the wreck and the fuel pump is still running'....).

A friend used to drive a Chevy Vega that had a fuel pump wired to run only
when there was oil pressure.
One day the wire from the oil pressure sending unit fell off.
The car ran until the carb was dry.
The car stopped.
The fuel pump would not run until oil pressure built.
oil pressure would not build until the engine fired.
Engine would not fire until the fuel pump ran.
Etc.

Cars today use an inertial switch that cuts off the fuel pump if the car is
in a wreck.

Erich