Engine starts, and cuts out straight away

Make: Alfa Romeo
Model: GT Factory Service Manual
Year: 2003–2010
Section: Starting › Engine starts, and cuts out straight away

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Fault diagnosisEngine starts, and cuts out straight away

ENGINE STARTS, AND CUTS OUT STRAIGHT AWAY

1.9 JTD 16V

The engine starts normally, though possibly with difficulty, then suddenly stalls

1.8 T.SPARK

0	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
		Results of the tests
	First, check: that the inertia switch has not been operated; state of the spark plugs; connections and state of the spark plug leads; no obstructions at the catalyzer	Move on to Step 1	Intertia switch operated	Restore correct operation
			Spark plugs dirty or damaged	Replace the spark plugs See Test 5510D10 SPARK PLUGS - R+R
			Spark plug leads damaged	Replace the leads
			Catalyzer(s) blocked	Replace catalyzer(s)
1	CHECK USING DIAGNOSTIC EQUIPMENT	All OK	Problems encountered	Operation
	Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket. Check: that there are no errors in the control unit; parameter plausibility	Move on to Step 2	Error detected in the control unit	Continue following the instructions for the diagnostic equipment
		Move on to Step 2	Parameters not plausible	Continue following the instructions for the diagnostic equipment
2	SUPPLY PRESSURE CHECK	All OK	Problems encountered	Operation
	Check the fuel supply pressure with the ignition ON and the engine switched off by carrying out Test 1056BY See Test 1056 PETROL INJECTION SYSTEM Start the engine and check that the supply pressure does not decrease	Move on to Step 4	The supply pressure decreases	Move on to Step 3
3	PETROL PUMP ELECTRIC CIRCUIT CHECK	All OK	Problems encountered	Operation
	Check petrol pump supply and earth See See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT	Move on to Step 4	Connections not correct	Repair the connections See See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT
4	CHECK ON CORRECT OPERATION	All OK	Problems encountered	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists: control unit defective	Replace the control unit Op. Op. 1056B82 CENTRALINA (UNICA) DELL''IMPIANTO INIEZIONE/ACCENSIONE - S.R.

1.9 JTD 16V

0	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
		Results of the tests
	Check the following, in order: No water, other fluids or dirt in the fuel filter No water, other fluids or dirt in the fuel tank that there are no obstructions in the exhaust system	Move on to Step 1 1	Water, other fluids or dirt in the fuel filter	1. Replace the filter element Op. Op. 1044B20 FUEL FILTER FILTERING ELEMENT - REPLACE
			Water, other fluids or dirt in the fuel tank	2. Clean tank
			3. Obstructions in the exhaust system	3. Replace the damaged system component
1	CHECK USING DIAGNOSTIC EQUIPMENT	All OK	Problems encountered	Operation
	Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket. Re-create the conditions under which the fault occurs and check: That there are no errors in the control unit; Parameter plausibility	Move on to Step 2 1	Errors detected in control unit	Continue following the instructions for the diagnostic equipment
			Parameters not plausible	Continue following the instructions for the diagnostic equipment
			No communication with the control unit	Restore the correct connections See See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
2	HIGH PRESSURE CHECK	All OK	Problems encountered	Operation
	With the diagnostic equipment connected to the diagnostic socket, check as described in the Test See Test 1060D ELECTRONIC DIESEL INJECTION CONTROL that the diesel pressure parameter is correct	Move on to Step 10 1	Pressure not correct	Move on to Step 3 1
3	LOW RETURN PRESSURE CHECK	All OK	Problems encountered	Operation
	Check as described in the Test See Test 1060A LOW RETURN FUEL PRESSURE CIRCUIT CHECK that the pressure in the return pipe to the tank is less than 1 bar.	Move on to Step 4 1	Pressure greater than maximum limit (return pipe to tank blocked)	Repair the pipe and replace if necessary
4	LOW SUPPLY PRESSURE CHECK	All OK	Problems encountered	Operation
	Check as described in the Test See Test 1060B LOW FUEL PRESSURE SUPPLY CIRCUIT CHECK that the diesel pressure between the filter and radial jet pump is between 2 and 3 bar.	Move on to Step 10 1	Pressure below the minimum limit or above the maximum limit	Move on to Step 5 1
5	LOW SUPPLY PRESSURE CHECK	All OK	Problems encountered	Operation
	Constrict the return pipe downstream of the low pressure regulation valve and carry out the Test again See Test 1060B LOW FUEL PRESSURE SUPPLY CIRCUIT CHECK with the pipe constricted, checking that the filter outlet pressure remains below 2 bar	Move on to Step 6 1	Pressure rises to 5 bar: pressure regulator valve on filter mounting incorrectly adjusted	Replace the valve Op. Op. 1044B16 DELIVERY ADJUSTMENT VALVE - R R
6	LOW SUPPLY PRESSURE CHECK	All OK	Problems encountered	Operation
	Check that the difference in pressure upstream and downstream of the filter is less than 1 bar	Move on to Step 7 1	Difference in pressure more than 1 bar	Replace the fuel filter cartridge Op. Op. 1044B20 FUEL FILTER FILTERING ELEMENT - REPLACE
7	LOW SUPPLY PRESSURE CHECK	All OK	Problems encountered	Operation
	Check that the supply pump pressure at the filter inlet is more than 2.2 bar	Move on to Step 10 1	Pressure below 2,2 bar	Move on to Step 8 1
8	LOW SUPPLY PRESSURE CHECK	All OK	Problems encountered	Operation
	Measure the difference in pressure between the electric pump outlet and the filter inlet and check that it is less than 0.3 bar	Move on to Step 9 1	Difference in pressure more than 0,3 bar	Replace the pipe
9	LOW SUPPLY PRESSURE CHECK	All OK	Problems encountered	Operation
	Check, as described in, that the pump supply voltage is equal to 12 volt and that the current absorbed is between 2 and 10 Ampere	Move on to Step 10 1	Voltage lower than 12 volts	Check the wiring at the connection leads See See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
			Current greater than 10 Amps: pump defective	Replace the fuel pump assembly Op. Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GUAGE CONTROL - R + R
			Current less than 2 Amps: Jet pump blocked	Replace the fuel pump assembly Op. Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GUAGE CONTROL - R + R and clean the tank
10	CHECK ON CORRECT OPERATION	All OK	Problems encountered	Operation
	Replace the DRV high pressure regulator and check that the fault is no longer present	End of diagnosis	Fault persists	Move on to Step 11 1
11	CHECK ON CORRECT OPERATION	All OK	Problems encountered	Operation
	Replace the high pressure pump and check that the fault is no longer present	End of diagnosis	Fault persists: control unit defective	Replace the engine management control unit Op. Op. 1060G80 DS ELECTRIC INJECTION CONTROL UNIT - R R

3.2 V6

The engine starts normally, though possibly with difficulty, then suddenly stalls

1	CHECK USING DIAGNOSTIC EQUIPMENT	All OK	Problems encountered	Operation
		Results of the tests
	Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket and check the following at the engine control node: That there are no errors in the control unit; Parameter plausibility	Move on to Step 2 1	Error detected in the control unit	Proceed as instructed by the diagnostic tester
		Move on to Step 2 1	Parameters not plausible	Proceed as instructed by the diagnostic tester
2	SUPPLY PRESSURE CHECK	All OK	Problems encountered	Operation
	Check the fuel supply pressure with the ignition ON and the engine switched off Op. Op. 0510C10 FUEL SYSTEM - CHECK DELIVERY PRESSURE Start the engine and check that the supply pressure does not decrease	Move on to Step 3 1	The supply pressure decreases	Replace the fuel pump assembly Op. Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GUAGE CONTROL - R + R
3	CHECK ON CORRECT OPERATION	All OK	Problems encountered	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists: engine management control unit defective	Replace the engine management control unit Op. 1056B82

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