When I turn on the ignition, there is a sound behind the dash (I would guess centre part) which is likeradio static/crackling. No it's not the radio. It stops when I remove fuse 18, which is listed by Chilton as warning indicator lamps, throttle solenoid positioner (?), low fuel module, dual timer buzzer, tachometer, engine idle track relay, fluids module/display. The car seems to be working normally, so I'm not worried, should I be?

Can anyone guess what this sound is, or suggest some tests for me to do to find out?

 

your buzzer is probably going bad or is bad.

 

Thanks for that. Don't remember ever hearing a buzzer, what's it for? What if I just disconnect it?