Sudden engine problem, no clue what it is....

[dexetr30]

It seems as though it isn't getting enough fuel. What about throwing a pressure gauge on the fuel rail while it’s running? Couldn't hurt.

[OrangePeel]

ALright here is the low down...  :roll: I have replaced TPS, CPS, APS, and FPS. Now I am still getting the following errors.

24 Throttle position sensor over 4.96V
42 Automatic shutdown relay circuit open or shorted
OR
42 Fuel pump relay control circuit
OR
42 Fuel level unit - no change over miles
OR
42 Z1 voltage missing when autoshutdown circuit energized (The Z1 voltage is the voltage of the circuits fed by the autoshutdown relay. This typically includes fuel pump and switched-battery feed to the ignition coil)

Anymore suggestions?

[Jeffy]

So you're using the 'throw parts at it' method? :nothing:   Looks like nothing has changed either.  You're getting a lot fo fuel related codes so I'd still start there.  Probably look at the fuel pump relay first.

[OrangePeel]

Already replaced fuel pump relay.

Any other ideas???

[OrangePeel]

Could my fuel injectors cause this problem?

Can they be removed and cleaned???

[neale_rs]

Probably a faulty ground strap.  This is what I read on another forum for similar symptoms.