Code 54 Help Pls

[79TransAm]

My bird is still not running... :( It's a 87 Trans Am WS6 with a 5.0L TPI engine. I actually got it to start this morning but it had a very erratic idle. and it eventually died. it acted like it isnt getting enough fuel which explains the code im getting, but when i hit the pin on the fuel rail where you can throw a gauge it shoots out real good. should i find a gauge and see what the pressure is? also the car seems to shut off when it warms up a little. any help would be great.



I'm getting a code 54:

low fuel pump voltage
OR
fuel pump relay
OR
EGR Solenoid No. 2 Failure
OR
Quad Driver Module output failure
OR
Mixture Control Solenoid - Circut voltage too high
OR