I have a 03 Liberty 3.7 Auto.. If I let it sit for more than a day with out driving it, the next day when I go to start it it wont do anything. There is power it wont crank nothing just acts dead. Now if I hold the key in the start position it will finally start to crank but wont fire up unless I give it gas. Onces it is started I have to keep my foot on the gas for about 2 minutes until it runs on its own. The only time it does this is when it sits for more than a day. After it is running and I drive it everyday it works perfect. Does anybody know what could cause it or what the problem it. I have arun a diagnostic check on it to and it was clean..