Engine coolant overheating signalled by instrument - with vapours visible

Make: Alfa Romeo
Model: GT Factory Service Manual
Year: 2003–2010
Section: Instrument panel › Engine coolant overheating signalled by instrument - with vapours visible

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Fault diagnosisEngine coolant overheating signalled by instrument - with vapours visible

ENGINE COOLANT OVERHEATING SIGNALLED BY INSTRUMENT - WITH VAPOURS VISIBLE

2.0 JTS, 3.2 V6, 1.9 JTD 16V

1	CHECK ON RADIATOR	All OK	Problems met	Operation
		Results of the tests
2.0 JTS 3.2 V6 1.9 JTD 16V Heater	Check the condition of the radiator. In particular: There should not be distortions or irregularities There should not be dirt	Continue to Step 2	Radiator distorted	Reaplce the radiator Op. Op. 1088B20 ENGINE COOLING RADIATOR - R + R
2.0 JTS 3.2 V6 1.9 JTD 16V Heater		Continue to Step 2	Radiator dirty	Clean the radiator
2.0 JTS 3.2 V6 1.9 JTD 16V Air Conditioner	There should not be distortions or irregularities There should not be dirt	Continue to Step 2	Radiator distorted	Reaplce the radiator Op. 1088B24
2.0 JTS 3.2 V6 1.9 JTD 16V Air Conditioner		Continue to Step 2	Radiator dirty	Clean the radiator
2	THERMOSTAT OPERATION CHECK	All OK	Problems met	Operation
	Check that the thermostat is working properly	Continue to Step 3	Thermostat not working	Bleed the cooling system. If the problem persists, replace the thermostat Op. Op. 1088C40 THERMOSTAT- R + R
3	FAN ACTIVE DIAGNOSIS	All OK	Problems met	Operation
	Connect the diagnostic equipment (Examiner Plus or Smart) to the diagnostic socket. Carry out the active diagnosis for the fans	Continue to Step 4	Fans not working	Continue to Step 5
4	CHECK ON WATER PUMP	All OK	Problems met	Operation
2.0 JTS 3.2 V6 1.9 JTD 16V Heater	Check that the water pump is working properly	Continue to Step 11	Pump faulty	Restore the correct operation of the pump. If necessary, replace it Op. Op. 1088C10 WATER PUMP - R + R
2.0 JTS 3.2 V6 1.9 JTD 16V Air Conditioner		Continue to Step 11	Pump faulty	Restore the correct operation of the pump. If necessary, replace it Op. 1088C12
5	FAN OPERATION CHECK	All OK	Problems met	Operation
1.9 JTD 16V 2.0 JTS	Supply the fans directly and check their operation See See E5020 ENGINE COOLING	Continue to Step 6	Fans not working	Replace the fans Op. Op. 1088E10 RADIATOR COOLING FAN - R + R
3.2 V6	Supply the fans directly and check their operation See See E5020 ENGINE COOLING	Continue to Step 6	Fans not working	Replace the fans Op. Op. 1088E11 FANS WITH SINGLE ENGINE DUCT - R+R
6	ENGINE COOLING ELECTRICAL CIRCUIT CHECK	All OK	Problems met	Operation
1.9 JTD 16V	Check that the line between the engine management and the fans is working properly See See E5020 ENGINE COOLING	Continue to Step 11	Control unit fault	Print the parameters read by the control unit, then replace it Op. Op. 1060G80 DS ELECTRIC INJECTION CONTROL UNIT - R R
1.9 JTD 16V		Continue to Step 11	Connections not correct	Restore the connections See See E5020 ENGINE COOLING
2.0 JTS	Check that the line between the engine management and the fans is working properly See See E5020 ENGINE COOLING	Continue to Step 11	Control unit fault	Print the parameters read by the control unit, then replace it Op. 1056F82
2.0 JTS		Continue to Step 11	Connections not correct	Restore the connections See See E5020 ENGINE COOLING
3.2 V6	Check that the line between the engine management and the fans is working properly See See E5020 ENGINE COOLING	Continue to Step 11	Control unit fault	Print the parameters read by the control unit, then replace it Op. 1056B82
3.2 V6		Continue to Step 11	Connections not correct	Restore the connections See See E5020 ENGINE COOLING
7	COOLING SYSTEM LEAKAGE CHECK	All OK	Problems met	Operation
	Check the cooling system for leaks Op. Op. 0510C30 COOLING SYSTEM - TIGHTNESS TEST	Continue to Step 8	Coolant leaks detected	Continue according to the instructions in See table See table X10 ENGINE COOLANT LEAKS
8	BUBBLING CHECK	All OK	Problems met	Operation
1.9 JTD 16V	Check that there fluid in the coolant reservoir is not bubbling	Continue to Step 9	Presence of fluid bubbling: cylinder head gasket damaged	Replace the seal Op. 1016B10
2.0 JTS	Check that there fluid in the coolant reservoir is not bubbling	Continue to Step 9	Presence of fluid bubbling: cylinder head gasket damaged	Replace the seal Op. Op. 1016C10 SINGLE CYLINDER HEAD, REMOVED - OVERHAUL
3.2 V6	Check that there fluid in the coolant reservoir is not bubbling	Continue to Step 9	Presence of fluid bubbling: cylinder head gaskets damaged	Replace the gaskets Op. 1016D11
9	HEAD HYDRAULIC LEAKAGE TEST	All OK	Problems met	Operation
1.9 JTD 16V 2.0 JTS	Check the hydraulic seal of the cylinder head	Continue to Step 10	Seal ineffective	Replace the cylinder head Op. 1016C20
3.2 V6	Check the hydraulic seal of the cylinder heads	Continue to Step 10	Seal ineffective	Replace the cylinder heads Op. 1016D30
10	MONOBLOCK HYDRAULIC SEAL TEST	All OK	Problems met	Operation
	CHECK ON BLOCK HYDRAULIC SEAL	Continue to Step 11	Seal ineffective	Seal ineffective Op. Op. 1004E20 ENGINE - DISMANTLE AND RE-BUILD FOLLOWING OPERATION 1004E10 - WASH AND CHECK DISMANTLED PARTS - RE-FIT CYLINDER HEAD AND OIL SUMP - DOES NOT INCLUDE REPAIRS TO CYLINDER HEAD AND AUXILIARY UNIT
11	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis

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Parts & tools for this job For 2003 Alfa Romeo GT

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