So, my 92 LeSabre likes to just shut off while I am driving. After about 30 minutes or so it will start right back up again. At first I thought it was the fuel pump, but when those go I believe they just go and don't work intermittently (sp?) So I have read a few other posts on this sight and it seems the most common thing I saw was the Crankshaft Position Sensor. Is this right? and if so, how do I replace one of these? Please help!