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International Automotive Technicians Network
Re: Speak of the devil - Bad 1994 jeep Cherokee fuel pump waveform.
Posted to Technical Discussion Forum on 2/7/2001

And the cause:

Worn Commutator

and Worn Brushes

The Old vs. New Waveforms.

(Take notice of the old pump turning only 3/4 of the speed of the new pump) Login to read more.

Files Referenced:

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