I have a 2004 Alfa 156 2.0 JTS. It will just turn over and not fire, Sometimes it will start and run for 1 second then it will stop again.
It has three codes present in the engine ecu,
1 , Phase Sensor (No Signal)
2, Fuel Pressue Sensor (Past High Limit)
3, Brake Servo Vaccum Sensor.
The Phase sensor has been replaced and the fault persists. I have checked the inputs & outputs of the phase sensor with a scope and they all read flatlines.
I get 5v on pin 1 (Black) , 12v on pin 2 (Yellow/Green) and Earth on pin 3 (Orange).
From past experience on other makes of vehicles I would expect 12v on pin 1, 5v on pin 2 and earth on pin 3. So normal running would generate a square waveform on the 5v line. Does alfa do things differently to everyone else?
Valve timing has been checked with the correct camlobe lock tools, & tdc with a dti gauge, Both are correct.
Any input would be appreciated, as it will be a nice car if I get it running.