Workshop Manuals Factory service & repair

Alfa Romeo GT Factory Service Manual (2003-2010)22 · Fault diagnosis

Alfa Romeo
GT Factory Service Manual (2003-2010)
Fault diagnosis
Engine
Engine coolant overheating signalled by the instrument / with visible vapour venting

22 · Diagnostics

Engine coolant overheating signalled by the instrument / with visible vapour venting

Make: Alfa Romeo
Model: GT Factory Service Manual
Year: 2003–2010
Section: Engine › Engine coolant overheating signalled by the instrument / with visible vapour venting

‹ Prev Low engine oil pressure Next › Engine coolant overheating signalled by the instrument / without visible vapour venting

Fault diagnosisEngine coolant overheating signalled by the instrument / with visible vapour venting

ENGINE COOLANT OVERHEATING SIGNALLED BY THE INSTRUMENT / WITH VISIBLE VAPOUR VENTING

1.8 T.SPARK

1	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Check the level of the coolant. Find out from the customer whether the problem has occurred previously Check the condition of the radiator. In particular, check for signs of deformation - traces of leaks - external dirt - fluid with excessive traces of rust.	Continue to Step 2	Level too low: the customer has never complained of the problem	Restore the correct level
			Level too low: repeated problem	See table See table X10 ENGINE COOLANT LEAKS
			Radiator distorted	Replace the radiator Op. Op. 1088B20 ENGINE COOLING RADIATOR - R + R
			Radiator dirty	Clean the radiator Op. 1088A20
			Radiator is leaking	Replace the radiator
			Liquid with excessive traces of rust	Clean the inside of the radiator and cooling circuit
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 system as per standard procedure. Replace the thermostat if the problem persists
3	CHECKING FAN OPERATION	All OK	Problems met	Operation
	Test using an Examiner Activate the fan in active diagnosis mode If the fan works, ensure it comes on at the required temperature	Continue to Step 4	Fan not working	Activate the fan motor directly, replace if it does not work, check the following in order if it does work: specific fuses and relays on the engine bay control unit, condition of 1st speed resistor, specific wiring continuity and insulation. Check that the control unit activates the fan speed relays. If not, replace the i.e. control unit. If it does, replace the engine bay control unit
4	BUBBLING CHECK	All OK	Problems met	Operation
	With the engine running, check there is no gurgling in the coolant reservoir	Continue to Step 5	Presence of gurgling in the coolant	Replace the cylinder head gasket Op. Op. 1016C10 SINGLE CYLINDER HEAD, REMOVED - OVERHAUL
		Continue to Step 5	No gurgling	Check the condition of the coolant pump vanes
5	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''

‹ Prev Low engine oil pressure Next › Engine coolant overheating signalled by the instrument / without visible vapour venting

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.