Engine coolant overheating signalled by the instrument

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

‹ Prev Engine coolant overheating warning light not working Next › Engine coolant overheating signalled by instrument - with vapours visible

Fault diagnosisEngine coolant overheating signalled by the instrument

ENGINE COOLANT OVERHEATING SIGNALLED BY THE INSTRUMENT

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	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 3	Gauge stuck at maximum temperature	Restore the correct connections See See E4010 INSTRUMENT PANEL . If necessary, replace the instrument panel Op. Op. 5560B11 ANALOGUE CONTROL PANEL - R+R OR REPLACE
3	FAN CYCLE CHECK	All OK	Problems met	Operation
1.9 JTD 16V	Check that the fan cycle is correct	Continue to Step 4	Fans not working	Continue according to the instructions in See table See table K29 ENGINE COOLANT OVERHEATING SIGNALLED BY INSTRUMENT - WITH VAPOURS VISIBLE
			Fans operate at the wrong temperature: control unit and panel readings consistent	Restore the correct connections with the control unit See See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT . If necessary, replace it Op. Op. 1060G80 DS ELECTRIC INJECTION CONTROL UNIT - R R
			Fans operate at the wrong temperature: readings not consistent	Restore the correct connections with the instrument panel See See E4010 INSTRUMENT PANEL . If necessary, replace it Op. Op. 5560B11 ANALOGUE CONTROL PANEL - R+R OR REPLACE
2.0 JTS	Check that the fan cycle is correct	Continue to Step 4	Fans not working	Continue according to the instructions in See table See table K29 ENGINE COOLANT OVERHEATING SIGNALLED BY INSTRUMENT - WITH VAPOURS VISIBLE
			Fans operate at the wrong temperature: control unit and panel readings consistent	Restore the correct connections with the control unit See See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT . If necessary, replace it Op. 1056F82
			Fans operate at the wrong temperature: readings not consistent	Restore the correct connections with the instrument panel See See E4010 INSTRUMENT PANEL . If necessary, replace it Op. Op. 5560B11 ANALOGUE CONTROL PANEL - R+R OR REPLACE
3.2 V6	Check that the fan cycle is correct	Continue to Step 4	Fans not working	Continue according to the instructions in See table See table K29 ENGINE COOLANT OVERHEATING SIGNALLED BY INSTRUMENT - WITH VAPOURS VISIBLE
			Fans operate at the wrong temperature: control unit and panel readings consistent	Restore the correct connections with the control unit See See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT . If necessary, replace it Op. 1056B82
			Fans operate at the wrong temperature: readings not consistent	Restore the correct connections with the instrument panel See See E4010 INSTRUMENT PANEL . If necessary, replace it Op. Op. 5560B11 ANALOGUE CONTROL PANEL - R+R OR REPLACE
4	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 5	Coolant leaks detected	Continue according to the instructions in See table See table X10 ENGINE COOLANT LEAKS
5	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 6	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 6	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 6	Presence of fluid bubbling: cylinder head gaskets damaged	Replace the gaskets Op. 1016D11
6	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 7	Seal ineffective	Replace the cylinder head Op. 1016C20
3.2 V6	Check the hydraulic seal of the cylinder heads	Continue to Step 7	Seal ineffective	Replace the cylinder heads Op. 1016D30
7	MONOBLOCK HYDRAULIC SEAL TEST	All OK	Problems met	Operation
	CHECK ON BLOCK HYDRAULIC SEAL	Continue to Step 8	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
8	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis

‹ Prev Engine coolant overheating warning light not working Next › Engine coolant overheating signalled by instrument - with vapours visible

Parts & tools for this job For 2003 Alfa Romeo GT

Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.