Loud engine noise durring acceleration and free rev

Tiny
ROUGHNUTZ03
  • CHEVROLET IMPALA

My dad has a 2002 Chevy Impala with the 3.4L engine and has 66100. When we start the engine it will idle fine but once we try to accelerate it makes a loud noise coming from the tube going to the air filter. We have changed the fuel filter, plugs, wires, air filter. I took it to the dealership and they said that it coul've been the catylitic converter so I changed that too and no help. Now the chevy dealership has no clue what is wrong the engine isn't giving out any codes to help diagnose. PLEASE HELP!

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Sunday, February 11th, 2007 AT 1:06 PM

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Tiny
SERVICE WRITER
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  • 9,252 POSTS

It it a whistling noise?

Sorry to hear about the NUTZ, a little moisturing lotion might help that.


http://www.2carpros.com/forum/automotive_pictures/30961_shocked1_1.jpg

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Sunday, February 11th, 2007 AT 2:18 PM
Tiny
ROUGHNUTZ03
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No its not a whisle it is more like aaa. Maybe a woop sound but repeatidly

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Tuesday, February 13th, 2007 AT 10:01 AM

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