relays

Hi again guys, I have another problem with my UZZ31 if you could lend some advice. Here's the issue: (Updated). One day the car refused to fire. Cranks but won't fire. No fuel delivery. Swapping the main relay with the dimmer relay does nothing. Other fuses seem good in engine bay... Applying...

Hello, i have a 1991 Lexus LS400, heres the problem, i know this car has a dual speed fuel pump, well one day, the car was acting like it was low on gas when u give it gas it acted as if it was struggling to get gas, i check the voltage at the fuel pump and it read 9 volts, well i know when the...