There are some black and white connections coming out of that big wire harness that runs on the drivers side of the car. One of the connections is hard to see as it just barely pokes out of the harness, its black. If it is left un pluged or isnt tight it will cause the coolant to buzz.



I didnt have mine tight, thats how I know.



STEPHEN

yeah, actually ive seen that too. its where the engine harness and the alternator harness "meet"



mike

my coolant buzzer goes off only if i drive in the rain.i think a wire is gettin wet er somethin but never goes off when its dry

yea that is a possibility