1991 Toyota Pickup V6 3VZE Engine
Installed new fuel pump and does not run while cranking

Cannot figure out why fuel pump is not getting power after turning key on. Replaced the relays still no power. If I jump the fuel pump it turns on. Someone said it might be something with the mass air flow sensor. But I am stumped.
any Ideas?

Thank you

 

Fuel pump does not necessarily run just because the key is turned to run.
Does the pump run while cranking???

 

No the fuel pump does not run while cranking.

 

A) You don't have a Mass air flow sensor. You have a Volume air flow sensor (VAF). Different technology.

B) But you're close. You probably have a problem in your VAF-COR circuit. Here's everything I know about that: https://www.yotatech.com/forums/f116...-quits-312747/