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Re: high pitch sound coming from passenger side of engine? (supra360)

Does it sound like a vacume when it goes on, and does it mostly go when the engine is warming. If it does that thats your Smog Air pump and is a normal sound.
 

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Discussion Starter · #4 ·
Re: high pitch sound coming from passenger side of engine? (vwbrvr6)

YA!! it sounds like a vacume! it only really turns on when warming up or if it's really cold out !!......... thank u very much!!!!
 
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