So im having a problem with my 99 3.0 flex fuel ranger, at first it didmt like to stay running unless i was constantly in the throttle. At red lights i had to keep it at about 2000 rpms and i was just winging it. Then another problem started last week. It will start fine and idle but if i let it idle to long it with shut off. I did a fuel pressure test today and it jumped around a bit, went from 18 psi, died, next start 29 psi, died. Now i can even drive around the block without it dying.so im wondering if i should bite the bullet and put a new fuel pump in or check smething else first. Thank you in advance for any help.

 

Fuel filter?

 

+1 ^^^^

Fuel filter FIRST, you may still need to replace fuel pump but always fuel filter first

1999 Ranger(1998 and up) should run 55-65psi fuel pressure at the engine
1997 and earlier ran 30-40psi
So yours is very very low