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Fiat Panda Factory Service Manual (2003-2012)23 · Fault diagnosis

Fiat
Panda Factory Service Manual (2003-2012)
Fault diagnosis
Engine
Engine not running smoothly / (hesistant)

23 · Diagnostics

Engine not running smoothly / (hesistant)

Make: Fiat
Model: Panda Factory Service Manual
Year: 2003–2012
Section: Engine › Engine not running smoothly / (hesistant)

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Fault diagnosisEngine not running smoothly / (hesistant)

ENGINE NOT RUNNING SMOOTHLY / (HESISTANT)

1.1, 1.2 8v

There are decreases in performance, possibly prolonged, during acceleration

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	First check: the state of the spark plugs and leads; the condition of the air intake circuit	Continue to Step 1	Spark plugs dirty or damaged	Replace the spark plugs Op. 5510D10
			Spark plugs dirty or damaged	Replace the spark plugs Op. 5510D14
			Spark plugs dirty or damaged	Restore the correct operation of the intake circuit
1	CHECK WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Connect the Examiner diagnostic equipment to the diagnostic socket. Check: that there are no faults in the engine management control unit; plausibility of parameters	Continue to Step 2	'Supply system' error detected	Continue according to the instructions See table Z50
			'Supply system' error detected	Continue following the instructions for the diagnostic equipment
			'Supply system' error detected	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 in which the fault arises, keeping the diagnostic equipment connected. Check: that there are no faults in the engine management control unit; plausibility of 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	CHECK ON FUEL PRESSURE	All OK	Problems met	Operation
	Carry out a road test, reproducing the conditions in which the fault arises. 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 the tank ventilation
			Incorrect pressure: obstructions in the fuel delivery pipe	Repair fuel pump electrical circuit
			Incorrect pressure: obstructions in the fuel delivery pipe	Replace fuel pump assembly Op. 1040A70
4	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists: control unit faulty	Replace control unit Op. 1056B82

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Parts & tools for this job Staging For 2003 Fiat Panda

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