car suddenly wont start - never ran great anyway, esp. cold, now cranks, but won't st

[rjSupra]

I can hear the whoosh of fuel in or next to the throttle body / fuel rail area. I just put the ignition key in and turned to 'on' and then jumped the FP & B+ connections. I could clearly hear fuel then, so I think that part is good.

I have tons of stuff in the car so was not able to verify if the fuel pump under carpet is clicking on ignition key in. Do i still need to check that if I can hear the fuel pumping while I am doing the above bypass?

(also there is that 21 code - Ignitor / ECU and code 14 O2 sensor / ECU happening, so could that shut me down from re-starting?)

and how the heck do you know if it's a bad ECU instead causing problems? Seems like a lot in the error codes, the lower possible culprit is - ECU!

Thanks.