HouseCallAuto 12/7/2010You have a bad Engine Control Module (ECM). Usually I give people other possibilities as to a cause, but in this case (a Stealth) the answer is always the ECM. If you have not replaced the ECM yet its time. There are other causes but those other causes are rare. I assume this also has no spark?
1. Check the 5-volt reference at the Throttle Position Sensor (TPS) and the Air Flow Sensor (AFS).
2. It is the Green/Yellow wire. It should be 5 volts.
3. If other than 5 volts and the power feeds and grounds are OK at the Powertrain Control Module (PCM), the PCM is faulty.
HouseCallAuto 12/7/2010Again, another way to diagnose it but a lab scope is needed - sorry- >>
1. Check for Battery Positive Voltage (B+) on the Red wire at the injectors with the key on.
2. Check the 5 volt reference on the Green/Yellow wire at pin 1 of the Mass Airflow (MAF) sensor.
3. If OK, scope the Camshaft Position (CMP) and Crankshaft Position (CKP) sensors.
4. If OK, do a dual trace on the CMP and CKP sensors to see if they are in sync. The timing belt may have jumped.
5. If the timing belt is not jumped, and the CMP and CKP sensors are in sync, then the Powertrain Control Module (PCM) is faulty.