Whinning noise from under the hood?

Tiny
HELLOHIWELCOME
  • MEMBER
  • 1999 CHEVROLET SUBURBAN
  • V8
  • 4WD
  • AUTOMATIC
  • 238,700 MILES
The noise comes from this object (air diverter valve I think) when the car is driving or idling. This object is connected to the air pump via hoses and connects with the exaust manifolds. Send pics or describe it to me on where it is what it does? Thanks!
Monday, October 31st, 2011 AT 9:54 AM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It does what exactly it says it diverts air to the exaust manifolds to reduce nox. This is acommon problem if you can put pup with thenoise then do so because if you change it it will end up doing the same thing.
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Monday, October 31st, 2011 AT 2:24 PM

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