Hello,has anyone come across the following problem. only when the weather is hot and i drive the jeep for a couple of short trips running errands the jeep will misfire violently. If you wait only a couple of minutes it clears itself up. The engine light is on only shows misfire codes in 2 cylinders. when temperatures are moderate doesnt happen at all. I check all coils,have new plugs and all electrical connections. Jeep runs fine otherwise at all times. I havent come across another problem like this except someone suggested vapor lock in one of the injectors? i tried search here but cant find right words. any help wil be appreciated. Thanks in advance. JimmyO