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snoogene
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Discussion Starter · #1 ·
Hi, I have a 2003 eclipse gts 5 speed. Once I am in third and try to rev the car past 5,000 rpm I get this weird hissing noise. I am not loosing any power and once it goes about right under 5,000 everything sounds normal. Help?
 

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48 Posts
Do you have a CAI (cold air intake)? Sounds like a vacuum leak. Do you have a vacuum gauge? Check your intake plenum and various hoses. There's probably a thread on here detailing a similar discussion. Do a bunch of searches.
 

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Fossilized Member
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1,206 Posts
do you have the stock intake box? Check the air scoop in front and make sure it is still riveted down. If the plastic rivets are missing, the scoop has a tendency to suck itself up against the underside of the hood.
 
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