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2001 Camry - Hissing noise from engine compartment

  #1  
Old 06-10-2008, 09:34 PM
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Default 2001 Camry - Hissing noise from engine compartment

I have three issues.

1. There is a hissing noise from the engine compartment, that makes the engine sound louder.
2. There is a rythmic beat as if something is rolling when the engine runs.
3. After a long halt, if I start the engine, it idles as if in full gas for sometime till the engine heats up when idling becomes normal.

And this 2001 gives meagre 21 mpg though I perfomed the 60k service with fuel system cleaning with the dealer.

Firestone says the hiss may be due to a leaking muffler. My friend said it could be PCV hose leak.

Any suggestions what this could be?
 
  #2  
Old 06-12-2008, 01:03 PM
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Default RE: 2001 Camry - Hissing noise from engine compartment

did you install a short ram intake on it?
 
  #3  
Old 01-17-2010, 12:28 PM
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I know this is one hell of a bump but if people ever have this problem you can do one of 2 things get an air induction cleaning on it which cleans all the gunk out of the throttle body etc. which i did and fixed the problem. Or you can get your IAC (Idle Air Control Valve) removed and cleaned which costs 100+ and get an air induction cleaning also because the air induction cleaning really does not clean out the IAC that good if at all.
 
  #4  
Old 02-08-2010, 01:37 AM
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Default 2001 Camry Hissing noise from engine compartment

Were any sensors left unplugged after the installation, whether it be on accident or due to the new intake not having a place for the sensor?

Also, do you have the check engine light on?
 
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