[XfireZ51]

Originally Posted by aafc

1990 368 cu. in. 4l8OE transmission.
Went for a drive all temp normal ,good fuel pressure. In 3rd gear nailed it got a code 55 ( fuel lean monitor ) slowed down went back to garage . Did fuel test
both pumps connected receive a reading of 6.45 amps. removed Fp1 checked
the reading again it showed 4.29 amps. From memory it looks like secondary
fuel pump needs to be replaced. I'am i correct?
Thanks
John

I would do both.