Fuel Pump

[David Vanden]

Does anyone have an aftermarket Bosch Fuel Pump installed on their car?  I believe mine is a Bosch 040 "High-Output" Fuel Pump.  It may be overheating, or the circuit may be overheating.  It is loud but the buzz is inconsistent.  I know they are loud, but mine buzzes and then buzzes louder for a moment and then returns to its previous hum.  I wonder if sediment in the gas tank is clogging it.  This is my second post about this, but if anyone knows the score on this one please inform me.
David