I started having this nasty warning/buzzer going off when the engine is running today. I do hear a different sound when the door is ajar so probably not that. I just took a video so you can be tortured too:

http://www.youtube.com/watch?v=S-J-XrI52Ms

Any ideas before I just start smashing the dash.

 

More than likely its the rad low water warning lite, check the rad, if it is low top it up and try again,you may have to clean the connections too

 

there is a door switch... it may have come loose..

 

Do a search for it in the archives, I remember there is a recurrent problem with some kind of warning buzzer relay that is up near the battery somewhere, a search should turn up the details..

 

our cars have a door buzzer?! i must know where it is so I can hook it up to a button to annoy the girlfriend!

I'm betting on low radiator fluid buzzer. unplug it and ground the wire out somewhere to double check.

 

It's the oscillator.

Up near the driver's side headlight, just in front of the battery, you will find a little black plastic box with the word "oscillator" printed on it in white.

Unplug the oscillator, your horrible sound should go away.

Sometimes you can plug it back in and the sound won't return, but if it does just leave it unplugged for awhile, you don't really need it.

Oscillators usually start acting up if there's a lot of moisture or the connections are getting corroded.

 

You guys nailed it. The radiator sensor wire was spliced by a previous owner. When I looked there the electrical tap had come lose and the wire was grounding on the radiator. Just re-taped the area and no more insane buzzing.

Thanks!