My 1998 jeep grand cherokke 5.2L V8 died when i pulled into my driveway and wont start in the past sometimes it would die when starting but after a few minutes of holdin down gas to keep runing it would start also sometimes when going into gear it would idle low and sputeras i took off i change coil cap rotor plugs sitll no spark ant solutions?
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I would start by going to an auto parts store and having them scan the computer for codes, even if the engine light is not on. i have heard about auto part stores saying they can not scan if light is not on. i am not sure if it is the scan tool they use or what but sometimes there could be a pending code where the computer is waiting to see the problem again before turning light on. if this is the case then ask them to scan it anyway or go to a shop and ask them to do it. the reason for this is that these trucks have crank sensor problems.
the next time is dies check for spark, remove a sparkplug wire and place a screw driver into the boot of the wire and place it near a ground, a metal surface and then have someone crank the engine and see if there is spark. if there is no spark or you got a code of the crank sensor then i would replace the crank sensor, but if you have good spark and truck will not start then try spraying starting fluid into throttle body and see if it starts and dies out if it does then fuel pump problem.
If you have a fuel pressure gauge then hook that up and crank engine and see if you have fuel pressure and how much.
I will say that this does sound like a bad crank sensor, it dies and then wont start for a while ...