Heat soak is when you shut off your engine after driving and the heat is trapped in the engine bay. This will shorten the life of lots of plastic/rubber parts, electronics, gaskets, etc. Its good practice to let your engine idle for a few seconds to a minute before shutting it off. Especially after you have been driving hard. This will allow the cooling system to lower everything's temperature a bit. Also, if your time allows, open the hood for a few minutes so that all the heat will escape into the atmosphere so it won't be cooking everything in your engine bay. You might get a few weird looks from people, but hey. There are a ton of people who will say "I never did anything like this and never had any issues." Doing these things is somewhat overkill, as the parts in the engine bay are made to withstand the heat to an extent. But hey, you can never take too much care of your car. I'm guessing you want to keep that jeep for a long time and fix things up?

Check this out, might be a way to mitigate the problem:

https://www.youtube.com/watch?v=lUCr_QCuwE0