fuel pump

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06-09-2012, 10:16 PM

Js88lx

3rd Gear Member

Thread Starter

Join Date: Jan 2011

Location: mid Cali

Posts: 837

fuel pump

can a bad fuel pump randomly work when cold?

06-09-2012, 11:53 PM

mattdel

6th Gear Member

Join Date: Nov 2006

Location: Spfld, MA

Posts: 9,240

yup. i wouldnt expect it to last long though. couple minutes at most.

06-10-2012, 12:39 AM

kmajka

Join Date: Jun 2012

Location: california

Posts: 6

oh ya, what prodably happening is one or more brushes are broken. tuss causing not enough power to rotate the armature. after the car sit for a while the armature can turn slightly and work again or more amps are drawn by the pump and starts it. Best is it get a scope that lets you see wave forms and determine if it is the pump or ECU.