1992 jeep cherakee

I have a problem keeping my 92 jeep cherokee running; starts cold ok runs fine, when it gets hot shuts down because I loose spark, I would appreciate some suggestion before a buried it, thanks!

Ignition coil comes to mind, as does the ignition module...both can do that sort of thing.

Also, I believe the crankshaft position sensor can cause similar things, Id do some searching for that.