[shiftdrift944]

ok ill see thanks outback porsche for clearing things up , well the DME it self should be fine since it stared up fine when i got the car, and then i replace the fuel pump and relay and i had to start it with starting fluid everytime... then after that i replace the head and new sensors.

so ill see if i can pull out the DME and check if 12 volt are going to the dme and on pin4 and with gnd pin 20 or on the car from the plug to the DME.

what the Pin # the first relay provide the 12 volt to the DME?

well i could lose signal from the sensor since; last time i tried to start it, it will start once i had the key back on the on position and then it dies 5 sec. later. i could also check the wiring from the connector of the sensor to the DME plug, and ill see if the resistance are correct.