I have a 97 Buick lesabre it'll die while driving the temp, battery, and oil pressure lights all come on it usually takes the car up to an hour to start. After stopped oil pressure will go to 20-25 but when the key is in the ignition to turn the car over it drops to 0. The problem started a year ago and has gotten worse over time I've brought to to 6 different mechanics and they all say they do know or have to wait for the car to die to check the codes, but sometimes it won't die for days

This issue sounds like u have a bad ignition control module,located directly under ur coilpak. thats wat they do wen they get hot aftr driving a while, shut off while driving(u must b loosing spark to ur plugs)an restarting wen cooled off. one way to check this for urself would b to purchase a spark checker at autozone or pepboys fairly inexpensive, an wen ur car dies, open the hood remove one sparkplug wire install tester between plug an wire, or wire an a good ground an have someone crank engine while u look at the tester bulb,if it lights up an pulses uspark is good,if it doesnt lite up at all while cranking engine ur spark is gone an thats ur problem possibly crank a sensor or the ignition module we mentioned earlier. try mounting the spark checker before the engine dies so u know wat a good spark will look like on that checker..... hope this helps good luck