Relay is good checked several times pump does not prime however provides pressure when cranking ecm comes on energizes relay after some time tinkering I decided to look for a grounded fuel pump. Internally grounded as I have had an issue like this with a different vehicle. Removed 3 pin connector at fuel pump. Probed the yellow wire which supplies twelve volts to the fuel pump this test was done with harness d/c at the fuel pump between yellow wire and ground I have approx 50-150 ohms.
Friday, April 6th, 2012 AT 10:03 PM