Engine coolant overheating signalled by the instrument / without visible vapour venting

Make: Fiat
Model: Doblò Factory Service Manual
Year: 2000–2010
Section: Engine › Engine coolant overheating signalled by the instrument / without visible vapour venting

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Fault diagnosisEngine coolant overheating signalled by the instrument / without visible vapour venting

ENGINE COOLANT OVERHEATING SIGNALLED BY THE INSTRUMENT / WITHOUT VISIBLE VAPOUR VENTING

1	RADIATOR CHECK	All OK	Problems met	Operation
		Results of the tests
	Check the condition of the radiator In particular: it should not show signs of distortion or faults; it should not be dirty	Continue to Step 2	Radiator deformed	Replace the radiator Op. 1088B20
		Continue to Step 2	Radiator dirty	Clean the radiator
1.9 JTD	Check the condition of the radiator In particular: it should not show signs of distortion or faults; it should not be dirty	Continue to Step 2	Radiator deformed	Replace the radiator Op. 1088B24
1.9 JTD		Continue to Step 2	Radiator dirty	Clean the radiator
2	CHECK ON CAP SEAL	All OK	Problems met	Operation
	Check the radiator cap for leaks	Continue to Step 3	Cap faulty	Replace the radiator cap Op. 0010T21
3	CHECK ON COOLANT LEVEL	All OK	Problems met	Operation
	Check the level of the coolant Op. 0010T21 Find out from the customer whether the problem has occurred previously	Continue to Step 4	Level too low	Restore the correct coolant level Op. 0010T21. If the fault has already occurred previously,
4	INSTRUMENT PANEL OPERATION CHECK	All OK	Problems met	Operation
	Disconnect the water temperature sensor and check that the gauge goes down to the minimum value	Continue to Step 5	Gauge stuck at maximum temperature	Restore the correct connections See E4010 INSTRUMENT PANEL. If necessary, replace the instrument panel
5	FAN CYCLE CHECK	All OK	Problems met	Operation
1.2 8v	Check that the fan cycle is correct	Continue to Step 6	Fan not working	See table D36 ENGINE COOLANT OVERHEATING SIGNALLED BY THE INSTRUMENT
			Fan operates at the wrong temperature: control unit and panel readings consistent	Restore the correct connections with the control unit See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT. If necessary, replace it
			Fan operates at the wrong temperature: readings not consistent	Restore the correct connections with the instrument panel See E4010 INSTRUMENT PANEL. If necessary, replace it
1.9 DIESEL	Check that the fan cycle is correct	Continue to Step 6	Fan not working	See table D36 ENGINE COOLANT OVERHEATING SIGNALLED BY THE INSTRUMENT
			Fan operates at the wrong temperature: control unit and panel readings consistent	Restore the correct connections with the control unit See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT. If necessary, replace it
			Fan operates at the wrong temperature: readings not consistent	Restore the correct connections with the instrument panel See E4010 INSTRUMENT PANEL. If necessary, replace it
6	COOLING SYSTEM LEAKAGE TEST	All OK	Problems met	Operation
	Carry out the cooling system leak test Op. 0510C30	Continue to Step 7	Coolant leaks discovered	See table X10 ENGINE COOLANT LEAKS
7	CHECK THAT THERE IS NO GURGLING	All OK	Problems met	Operation
	Check that there is no gurgling/oil in the coolant reservoir	Continue to Step 8	Fluid or bubbles: head gasket damaged	Replace the gasket Op. 1016C10
1.2 8v Climatizzatore	Check that there is no gurgling/oil in the coolant reservoir	Continue to Step 8	Fluid or bubbles: head gasket damaged	Replace the gasket Op. 1016C11
8	CYLINDER HEAD HYDRAULIC SEAL CHECK	All OK	Problems met	Operation
	Check the hydraulic seal of the cylinder head	Continue to Step 9	Seal insufficient	Replace the cylinder head Op. 1016C10
9	MONOBLOC HYDRAULIC SEAL CHECK	All OK	Problems met	Operation
	Check the hydraulic seal of the block	Continue to Step 10	Seal insufficient	Replace engine block Op. 1012A10
10	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present		Fault persists	Search for the fault starting from another symptom'

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Parts & tools for this job Staging For 2000 Fiat Doblò

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