2007 Toyota Corolla whistling noise coming from engine comp

2007 TOYOTA COROLLA
47,000 MILES • 4 CYL • FWD • AUTOMATIC
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BALBREC2
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  • 1 POST
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?
Aug 20, 2009 at 2:23 AM
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MMPRINCE4000
  • ✓ASE Certified Mechanic
  • 8,548 POSTS
  • ASE Certified Mechanic
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.
Aug 20, 2009 at 8:25 AM
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