2.3L ('83-'97) Replaced everything....

[Jimmy B]

Hey guys I'm at wits end. 97 ranger 2.3. The truck starts and then dies and then sometimes it stays running but runs rough. It's so intermittent. Idle will spike high for a while then instantly go back to spuddering. Cleaned Mass air,new IAC,new 02 sensors,cleaning the TB in a ultrasonic cleaner. Also checked for any vacuum leaks. Checked valve in EGR. Codes throw p1130, p1409, p1506, p0122, p1100. I have replaced and tested everything I can. So I'm leaning towards recessed valves. But no misfire code. Not sure what to do now.

 

[SenorNoob]

P0122

Throttle/Petal Position Sensor/Switch A Circuit Low Input

P1100

Mass Air Flow Sensor Intermittent

P1130

Lack of Upstream Heated Oxygen Sensor Switch – Adaptive Fuel Limit – Bank No. 1

P1409

EGR Vacuum Regulator Solenoid Circuit

P1506

Idle Air Control Overspeed Error

That's quite the eclectic list. Most of them are circuit codes. Have you been running with things unplugged? If so clear codes and drive it a few miles and read them again.