I have a trusted mechanic install a new distributor for me because the PIP sensor was going out on me. Well after a few months I am getting the code for the failure of PIP sensor. Any ideas of why I would be getting that trouble code? The only thing I could think of is that he did not clear the codes but I doubt he would forget to do that. The problem I am having is that when driving or accelerating my stang the RPM's will drop down to zero than go back up. But it is getting more and more frequent. Anybody know what the hell is going on with my stang? Thanks for any suggestions.