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Old 04-09-2010, 09:19 AM   #1 (permalink)
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Question What is this part and should I be concerned that it makes noise?
What is this and why does it make a somewhat loud clicking sound in time with the engine? It's connected to a tube with an EVAP-related tag on it.

Thanks!

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Old 04-09-2010, 10:54 AM   #2 (permalink)
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It is the vacuum switching valve (VSV). It is supposed to click.
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Old 04-10-2010, 08:30 PM   #3 (permalink)
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It wasn't always this loud, though. Cause for concern?
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Old 04-10-2010, 10:04 PM   #4 (permalink)
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I wouldn't worry about it, if it goes bad, Toyota has to fix it because it's emissions related
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Old 04-12-2010, 07:53 AM   #5 (permalink)
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Quote:
Originally Posted by TrdSpeed140 View Post
I wouldn't worry about it, if it goes bad, Toyota has to fix it because it's emissions related
I'm not sure if he's kidding, but that VSV is covered by your basic warranty so if your out of that Toyota doesn't pay
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Old 04-12-2010, 08:55 AM   #6 (permalink)
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Quote:
Originally Posted by mikered30 View Post
It is the vacuum switching valve (VSV). It is supposed to click.
I agree with mikered30. My car has been doing the same thing for the past 5 years, I believe it is a normal characteristic.
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Old 04-22-2010, 09:06 PM   #7 (permalink)
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Quote:
Originally Posted by TrdSpeed140 View Post
I wouldn't worry about it, if it goes bad, Toyota has to fix it because it's emissions related
Looked in my owner's manual today. Nothing on my car is covered anymore, including emissions, since I'm past 80,000 miles.
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