Climate control system noisy / (in the engine compartment)

Make: Alfa Romeo
Model: 147 Factory Service Manual
Year: 2000–2004
Section: Noisy / vibrations › Climate control system noisy / (in the engine compartment)

Fault diagnosisClimate control system noisy / (in the engine compartment)

CLIMATE CONTROL SYSTEM NOISY / (IN THE ENGINE COMPARTMENT)

The climate control works properly, but there is too much noise coming from the engine compartment

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Disconnect the services belt and check whether the noise disappears. Do not let the engine run for long with the belt disconnected Check whether the noise only occurs with the engine switched off	Continue to Step 2	The noise disappears when the services belt is disconnected	See table S10 ENGINE WHILSTLING / SERVICES BELT NOISY
			The noise only occurs with the engine switched off	Check that it is not coming from the electric fan
			The noise does not disappear	Continue to Step 1
1	PIPES AND COMPONENTS FIXING CHECK	All OK	Problems met	Operation
	Check that the compressor and the system pipes and components are correctly fixed. In the following order: drier filter fixing pipes fixing (with bands and spacers) no interference between the pipes and other components in the engine compartment Compressor fixing to the engine	Continue to Step 2	Components fixing not correct	Restore the correct tightening. If necessary, replace the bands or spacers
		Continue to Step 2	Interference in the engine compartment	Restore the correct pipe layout
2	CORRECT OPERATION CHECK	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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