Our A/C is blowing cold air, but when you turn it on there's a noise under the hood that sounds like the engine is revving at 8000 RPM. When the A/C is turned off, the noise goes away. It is definitely the A/C and not the engine.

We leave on a long trip soon so I need to get the issue fixed.

Thanks for any advice.

JV

The suction fan is very loud when it's running at high speed.

Thanks ILUVMILS. I think that's it. As I lower the fan speed, the noise diminishes a little.

JV