We recently bought a 1997 Cherokee Laredo. During the test drive it ran very nicely. Two days later my wife drove it to work. On the way there she stopped at a gas station to buy a few things(not gas). When she tried to start it back up, it would not fire. It turned over just like it should, it just would not fire. We called the local Jeep dealership and had them send a flatbed. When it got there, the driver turned the key and of course, it fired right up. We went ahead and sent it to be looked at. The mechanics kept it a week but couldn't get it to duplicate the problem. According to the mechanics, the fuel pressure was fine, and their diagnostic tool showed no problem codes. We picked it up and drove it home. On the way home, it bogged down and cut off on an exit ramp. It did re-fire when the gas was re-applied. We love the Jeep, but we're scared to drive it. Help, please.

 

Could possibly be heat soak, or the cps?