Code Chasing

[gizmo]

A couple days ago I started my truck (1994 K1500, 5.7) and before I got out of my driveway it stalled. I tried to restart it and it just turned over. I made several atempts and failed to start. I left it alone for a while it started with a rough idle and then smoothed out after a few seconds. I used the truck to move my trailer and then parked it because I never had the time or patience to deal with it. I then started it and it started normal. It still had a rough idle and the Service Engine Soon light came on. It went off after I restarted it at the Convience store. I checked for a code. The first code was 32 (EGR). I removed the EGR valvle and cleaned it. It did have carbon build up. The solenoid had vacuum as I revved the motor. As I forced the EGR closed the engine stumbled. I cleared the code and tryed to drive it the next day. I had to gas it to get it started and the idle was higher than normal. The Service Engine Soon light came on again. Code 34 (IAC error). I removed the IAC and cleaned it. I cleared the code and now it barley idles at 200rpm. I change the fuel filter and scanned the ECM again and came up with code 54 (Fuel pump low voltage). It seems to be running rich and the spark from the distributor cap and the plug is a yellowish color rather than blue. Any input would be greatly appreciated.

[gizmo]

I used seafoam and it seemed to correct my problem. I poured it into the PCV hose with it running. Amazing stuff. The engine must had been full of carbon.