Please Help i was putting in my aftermarket gauges and i took out my coolant temp sending unit and decided not to tap into there and when i was putting it back in the threads broke off at the nut on the sensor and i have the threaded end of the sensor stuck in my block and i cannot get ahold of it to twist it out do they make a tool or do i have to drill it out? Please help?

 

They make screw extractors. You drill a small hole like in the center, or offset the use the extractor to twist it out. Also, a reversed drill bit will do the same thing. Or the old fashioned way, drill a small hole or centerpunch it off to one side. Then use a small punch and hammer to tap on it so it screws itself out.