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International Automotive Technicians Network
Re: Focus Fuel Pump Waveform
Posted to Technical Discussion Forum on 5/22/2003

Hi Tom,

When I have "hot wired" these fuel pumps, they typically draw between 6-8 amps and run about 5000 rpm. Even hot wired, the patterns are not real pretty, but it is easy enough to see the commutator humps (the ones I have checked have 8 com bars). If y... Login to read more.