I searched the forum and didn't find any posts that were similar to the problem I'm having. First, the jeep gets driven maybe once a week. Second it has a brand new battery. Now onto the problem: I started the jeep and no problems. All gauges and lights are normal. I drive for maybe 5 minutes and stop at the store. Come back and start the jeep same as before, everything is fine, then it starts idling real low like around 200-300 and then even lower until it dies. I turn the key to start it and it cranked for a fairly long time before it fired and I had to keep my foot on the accelerator pedal or it would try and die again. So I drove it to my destination and if off idle there's no problems. The only thing I noticed was that the voltage guage was moving back and forth a little, but nothing like I've seen with a bad alternator. After about 40 minutes of highway and stop light driving it's back to a normal running vehicle. I shut it off for about 4 hrs and it started and ran like normal. So any ideas? I'm sorry the post's a bit long, but I wanted to give as much detail as possible. Thanks.