I can hear a faint air leak noise only when I accelerate from idle. But it only happens when the weather is over 70. It seems to be coming from around the pulleys. Any ideas?

 

Air leak? Hmm, not sure what to tell you Jay.

 

Get someone to assist you with diagnosis. Best way to do it is put the car in idle and have someone rev it up. While they are doing that you have the hood open listening for the noise. If you can hear it while driving, then you should be able to catch it this way pretty easy.

It seems logical it would be while its warm as things tend to expand with heat.