Re: [DML] Re: Electrical help / Starting problem - I'm stuck
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Re: [DML] Re: Electrical help / Starting problem - I'm stuck



The quick fuel pump pulse is not actually part of the design, but an innocuous side effect of powering the device up. On some cars you can make the fuel pump turn over for a second by flashing the headlights. It just puts a "spike" on the +12v rail to the RPM relay which it interprests wrongly as a pulse from the coil

Martin

David Teitelbaum wrote:

The older RPM relays act just as you describe. The newer ones will
pulse the fuel pump on for a moment when you first turn the ignition
on and then start running steadily once the motor starts.










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