2007 Toyota Corolla whistling noise coming from engine comp

Tiny
BALBREC2
  • MEMBER
  • 2007 TOYOTA COROLLA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 47,000 MILES
I am getting a whisling noisecoming from the engine compartment but I can only hear it when parked next to somethingto reflect sound and my windows are down, It only happens when transmission is in drive. It does not do it in P, R or N. Could something be wrong with my transmission? It works perfectly fine in all regards otherwise. Fluid level is correct and red and clear. Please advise. Can I hurt my car by continuing to drive it?
Thursday, August 20th, 2009 AT 2:23 AM

1 Reply

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
If engine oil is full and trans is full, it is likely a vacuum leak, perhaps a vacuum switching valve leaking.

Vacuum leaks can affect air/fuel ratio, but will also set a an error code.

While I don't think you are doing any harm, it will probably get worse. If under warranty (powertrain) have Toyota look at it.
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Thursday, August 20th, 2009 AT 8:25 AM

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