Engine overheating / with the fan working

Make: Fiat
Model: Multipla Factory Service Manual
Year: 1998–2010
Section: Engine › Engine overheating / with the fan working

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Fault diagnosisEngine overheating / with the fan working

ENGINE OVERHEATING / WITH THE FAN WORKING

The reading on the special instrument in the panel shows a high engine coolant temperature

The cooling fan comes on normally (Otherwise See table D31 ENGINE OVERHEATING).

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Preliminarily check: engine coolant level radiator cleanliness and condition condition of the expansion tank, and particularly the cap seal	Continue to Step 1	Insufficient engine coolant level	Top up the engine coolant level If the defect persists, See table X10
			Cap faulty	Replace the component (see Assembly 1048A)
			Air intake circuit component damaged	Repair or replace the cap (Op. 1088A10)
			Radiator dirty, damaged or deformed	Clean the radiator. If necessary, replace it Op. 1088B24
1	TEMPERATURE GAUGE OPERATION CHECK	All OK	Problems met	Operation
	Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket (in the engine management control unit ambient): read the engine temperature value shown amongst the parameters and compare it with the instrument reading	Continue to Step 2	Values do not agree, instrument reading faulty	See table K26
2	CHECK COOLANT TEMPERATURE SENSOR	All OK	Problems met	Operation
1.6 16v	Check that the engine coolant temperature sensor is working: See Test 1056C Checking engine coolant temperature sensor operation	Continue to Step 3	Sensor faulty	Replace temperature sensor Op. 1056B50
1.6 16v		Continue to Step 3	Connections not correct	Restore the connections ( See E4010 INSTRUMENT PANEL)
1.9 JTD 8V	Check that the engine coolant temperature sensor is working: See Test 1060E Checking engine coolant temperature sensor operation	Continue to Step 3	Sensor faulty	Replace temperature sensor Op. 1060G14
1.9 JTD 8V		Continue to Step 3	Connections not correct	Restore the connections ( See E4010 INSTRUMENT PANEL
3	CHECK THERMOSTAT UNIT	All OK	Problems met	Operation
	Check the condition of the thermostat unit that it is correctly calibrated	Continue to Step 4	Thermostat unit faulty	Bleed the system, replace the thermostat unit if the anomaly persists Op. 1088C40
4	WATER PUMP CHECK	All OK	Problems met	Operation
	Check the condition of the water pump the seal of the gaskets	Continue to Step 5	Water pump faulty	Replace the water pump or the gaskets Op. 1088C12
5	CHECKING 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'

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Parts & tools for this job For 1998 Fiat Multipla

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