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  #1  
Old 01-21-2003, 08:35 AM
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Join Date: Aug 2002
Location: Connecticut
Posts: 57
ticking sensor?

There is a sensor/switch located near the front drivers side of my '02 C320. It has a metal tube attached as well as an electrical connector. It is about the size of a small aspirin bottle. I noticed it makes an audible tick, tick, tick noise similar to a high voltage electrical arcing sound. It will do this for a minute or two, then stop, then start again. The ticking is relatively fast. About 2-3 times per second. Also, you can "feel" the tick if you touch the unit.

Can someone tell me what this is and should it be doing this?

Thanks
Brian
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  #2  
Old 01-21-2003, 08:48 AM
it leaks, its german
 
Join Date: Mar 2002
Location: raleigh nc
Posts: 1,111
Is it black and does it have the word "MOT" and a arrow on it?


Sounds like the purge valve.


Joe
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  #3  
Old 01-21-2003, 09:23 AM
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Location: Connecticut
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Can't remember any identifying marks. I'll take a look at lunch time...

Brian
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  #4  
Old 01-21-2003, 01:55 PM
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Join Date: Aug 2002
Location: Connecticut
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Joe,

It does have MOT and the arrow. Should this be making the noise I described?

Brian
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  #5  
Old 01-21-2003, 02:34 PM
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Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,777
The Purge valve had a mount change to quiet them down.
Do a search in the archives for the the info or try a Dealer parts dept.
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