I got a new screw in sensor that fits in the top of the engine block.
When I unscrewed the old one I found the previous "mechanic" (no it
wasn't me) had put the old one in crossthreaded. Now when I try to put
the new one in, the threads lock up and I've started to strip the
threads on the new one. I was fortunate to get the old one back in to
plug the coolant from leaking (I hope it doesn't let go on me). Where
do I go from here, besides to a garage. Is there a way to straighten
up the threads in the engine block? The new sensor is brass. The
engine block is iron or cast iron. anybody?