These are both hall effect sensor right? It seems a lot of people (including me) just replace parts like these on suspicion.
I'd like a way to test these things. I hate throwing money at problems.
For each of these sensors, what is the hall effect exitation voltage? What is the expected voltage output? Are the sensors sensitive to oil, pollutants, etc?
I'm going to be pulling these apart on my car soon, so as soon as I do some testing I'll do a DIY to make it easy for people in the future.