B20 ENGINE STARTS, AND CUTS OUT STRAIGHT AWAY - Alfa - 166 - eLearn

3308587 - B20 ENGINE STARTS, AND CUTS OUT STRAIGHT AWAY

The engine starts, with difficulty and then immediately cuts out suddenly

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	First check: that there is no water, other fluid or dirt in the fuel tank the state of the spark plugs and leads the condition of the air intake circuit for a possible obstruction in the catalyzer	Continue to Step 1	Presence of dirt in the fuel tank	Clean the fuel tank Op. 1040A24
			Spark plugs dirty or damaged	Clean or replace the spark plugs Op. 5510D10
			Spark plug leads damaged	Replace the spark plug leads Op. 5510D14
			Air intake circuit component damaged	Replace component (See Assembly 1048A)
			Catalytic converter obstructed	Replace catalyzer Op. 1080B62
1	CHECKING WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
2.5 V6 3.0 V6	Connect diagnostic equipment (Examiner or other instruments) to the diagnostic socket. Check that there are no faults in the engine management control unit	Continue to Step 2	An error is detected in the control unit	Continue following the instructions for the diagnostic equipment
2.5 V6 3.0 V6		Continue to Step 2	Lack of dialogue with the control unit	Restore connection between the engine management control unit and the diagnostic connector ( See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT ).
2.0 TS	Connect diagnostic equipment (Examiner or other instruments) to the diagnostic socket. Check that there are no faults in the engine management control unit	Continue to Step 2	Idle failure detected	Carry out the idle procedure following the instructions ifor the diagnostic equipment
			An error is detected in the control unit	Continue following the instructions for the diagnostic equipment
			Lack of dialogue with the control unit	Restore the connection between the engine management control unit and the diagnostic connector ( See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT )
2	COIL CHECK	All OK	Problems met	Operation
2.5 V6 3.0 V6	Using the diagnostic equipment (Examiner or other iinstruments), carry out the active diagnosis of the coils	Continue to Step 3	Ignition coil connections faulty	Restore the connection for the coils with the control unit ( See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT )
2.5 V6 3.0 V6		Continue to Step 3	Ignition coils faulty	Replace the ignition coils Op. 5510C14
2.0 TS	Check, in order: coils supply connection of the coils with the engine management control unit connection of spark plugs to coils operation of the coils ( See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT ).	Continue to Step 3	Connections not correct	Restore connections
2.0 TS		Continue to Step 3	Ignition coils faulty	Replace the ignition coils Op. 5510C14 .
3	CHECKING FUEL PRESSURE	All OK	Problems met	Operation
	Check the fuel supply pressure Op. 0510C10	Continue to Step 4	Pressure not correct	Replace the fuel pump assembly Op. 1040A70
4	CHECKING ALTERNATOR	All OK	Problems met	Operation
	Verify: the correct operation of the alternator voltage regulator the connections between the alternator and the battery	Continue to Step 5	Voltage regulator not working properly	Replace the voltage regulator
		Continue to Step 5	Connections not correct	Restore the connections ( See E5010 STARTING AND RECHARING )
5	HECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists	Search for the fault starting from another symptom'