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Noisy engine while A/C is on?

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Old Aug 2, 2010 | 11:25 PM
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chazzz's Avatar
chazzz
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From: Southern California
'05 MBZ C230K and '09 MBZ C350
Noisy engine while A/C is on?
I've noticed that the engine runs louder/noisy when the A/C is on at full blast. When I turned off the A/C, the engine is quietier and normal level of noise.

Is that normal? or am I having a problem with the engine or A/C system?

thanks
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Old Aug 3, 2010 | 04:36 AM
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LILBENZ230
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2019 G70 6MT & 2022 Ford Maverick XL
With A/C on full blast the car sounds like a jet and this is normal.
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Old Aug 3, 2010 | 12:33 PM
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glocati
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From: Portland, Oregon
2016 GLE 350
Originally Posted by LILBENZ230
With A/C on full blast the car sounds like a jet and this is normal.
Agreed ...It does sound like a jet. Mine has quite a bit of what i call "compressor whine" as well. I thought it was a bit much but dealer and indy shop say that is normal opreration.
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Old Aug 3, 2010 | 01:12 PM
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From: NoVa
2007 C230, S2000
Specially when very hot outside (100 degrees) and your AC in on auto.
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Old Aug 3, 2010 | 05:02 PM
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Much of the noise is the condenser/radiator fan cranking up to high RPM
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Will this fit the 2002 c230k?

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