1998 mazda 626 v6, at what temperature do you measure the resistance of the crank sensor and should it be heated to continue the test? M y car overheated twice and I ended up having to change one injector but it still has a miss at idle and at highway speeds. I changed the crank sensor about a year ago due to the fact when the car would get hot it would have no resistance and the engine would die. Was wondering if the car overheating might of affected something else. Compression looks good, please help. Thanks,Charlie