Re: over heat buzzer
12footer, let me jump in here and help out. august, first remove the wire from the temp sending unit and keep it away from the block, turn the ignition ON, if the buzzer sounds you have a short in the wiring from the ignition switch to the engine, if not then follow along, set the ohm meter to the lowest ohms scale, probably RX1 if it's a meter with a needle, or to lowest ohm scale on a digital meter, likely 200 ohms, now touch the two meter test leads together and you will see near zero with the needle scale or near 000 with the digital meter, this is the same as having continuity or checking across a switch that is turned ON, then untouch the meter leads and see what the meter reads, this is the same as no continuity or a switch that is OFF. Now connect the test leads to the sending unit threaded post and a bare spot on the engine block, if it reads near zero ohms the sending unit is bad and this is why the buzzer is always on. The temp sending unit for a buzzer system is really just an ON switch (engine is overheating) or OFF switch (engine temp is okay). Hope this is clear (yeah right) <br />and helps you.
