D01 ENGINE NOT RUNNING SMOOTHLY / (HESISTANT) - Fiat - STILO - eLearn

3360204 - D01 ENGINE NOT RUNNING SMOOTHLY / (HESISTANT)

There are decreases in performance, possibly prolonged, during acceleration

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	First check: the condition of the air intake circuit	Continue to Step 1	Air intake circuit check	Restore correct operation of the intake circuit
1	CHECKING WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket. Verify: that there are no faults in the engine management control unit the plausibiilty of the parameters	Continue to Step 2	'Fuel system' error appears	See table Z50 MIXTURE STRENGTH ERROR
			'Fuel system' error appears	Continue following the instructions for the diagnostic equipment
			'Fuel system' error appears	Continue following the instructions for the diagnostic equipment
2	ROAD TEST WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Road test the vehicle, reproducing the conditions under which the fault arises, keeping the diagnostic equipment connected Verify: that there are no faults in the engine management control unit the plausibiilty of the parameters	Continue to Step 3	Error arises suddenly in the control unit	Continue following the instructions for the diagnostic equipment
		Continue to Step 3	Error arises suddenly in the control unit	Continue following the instructions for the diagnostic equipment
3	CHECKING FUEL PRESSURE	All OK	Problems met	Operation
	Carry out a road test, reproducing the conditions in which the fault arises. with the pipe constricted check that the filter outlet pressure remains below 2 bar.Check the fuel supply pressure Op. 0510C10	Continue to Step 4	Incorrect pressure: obstructions in the fuel delivery pipe	Remove the obstructions in the fuel pipe, and if necessary replace it
			Incorrect pressure: obstructions in the fuel delivery pipe	Restore tank ventilation
			Incorrect pressure: obstructions in the fuel delivery pipe	Replace fuel pump assembly Op. 1040A70
4	CHECKING CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present		Fault persists: control unit defective	Replace engine management control unit Op. 1056B82 Search for the fault starting from another symptom'