C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

smog pump

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Old Jul 15, 2012 | 05:32 PM
  #1  
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c230 2006
smog pump

I have a c230 2006. When the car is started when cold a "hissing" sound comes from what seams to be the smog pump. It stops after about 30 seconds. Has anyone had this problem?
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Old Jul 15, 2012 | 07:06 PM
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2019 G70 6MT & 2022 Ford Maverick XL
It's normal secondary air injection.
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Old Jul 15, 2012 | 10:18 PM
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c230 2006
funny that I have never noticed it before. Is it normal to hear it very clearly from inside the car?
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Old Jul 15, 2012 | 10:50 PM
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From: fort worth, tx
06 C230 SS 6spd
Yea it sounds pretty loud. I hear clearly in my garage.
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Old Jul 15, 2012 | 11:43 PM
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2019 G70 6MT & 2022 Ford Maverick XL
Very loud on the 4-cylinders.
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Old Jul 16, 2012 | 12:21 AM
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From: fort worth, tx
06 C230 SS 6spd
Sounds like those bathroom hand dryers
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Old Jul 16, 2012 | 07:25 AM
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c230 2006
thanks, I'll be waiting for the next problem
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