Let play 'GUESS THAT SOUND!'

[Fresco Bob]

These are coming from a '99 V6 Manual

Sound #1: When I hit around 2900 RPM, there is a slight 'buzzing' sound coming from the engine bay. The faster the rpm's climb, the shorter the sound, and its longer if Im accelerating slower. The buzzing almost reminds me of a kitchen buzzer, but I can only get it to last about 1-2 seconds. Anybody know what it is?


Sound #2: This one is related to the HVAC fan. When the fan is on with the AC, doesnt matter if its the low of high setting', I get a whinning sound that gets louder as the rpms get higher. Its somewhat noticable with just the fan on, and very noticable with the AC on as well. Anybody know what this is to? Thanks

[boiphil]

I remember posting about the buzzing myself. Mine just sort of went away (not sure if it had to do with me tightening anything or not, I know I tightened my license plate screws and a anything loose under the hood and it sort of vanished). Ironic it was at the EXACT same rev range, hopefully it's just a loose part.

HVAC I've got no idea, hopefully someone else can help!

[Fresco Bob]

I figured out the first sound, the heat shield on my cat converter was partially rusted, and since its been removed there is no more rattle[/code]

[19solara99]

Sound #2 is probably coming from ur a/c compressor. I’m guessing the bearings