Hi, I started to have a problem with my car. After warming up at idle, something starts whistling out of my engine compartment, I can't pinpoint exactly what, because after opening the hood I hear the sound so little that I can determine that it is from the left side of the wiring .. Recently I had a similar problem with whistling (exactly the same after warming up, but much more aggressive) The defective tensioning pulley with the water pump and the V-belt, which was totally cracked, were changing. doesn't look spoiled, what could it do now? again any of the pulleys? I tried to see when and how long the whistling lasted ... after stopping, just turn off the engine for 5 minutes, bounce to the store, come back, and the whistling is gone. I'm going to work 10 minutes max 50-60 I can't hear anything ... I'm going somewhere faster I stop and the whistling .... the tension pulley was as expensive as a pig and I don't have the nerves or money to repair a 16-year-old Toyota all the time ...