we just got a used 2006 dodge grand caravan sxt today and we noticed something weird. When i use the factory issued key that has the remote built in, it runs fine. when i use a copied key that the dealer also gave us, (one thats pure metal without a remote on it) , i start the van, and it stalls after a few seconds. has anyone else had this problem and even if you didn't what could be causing this. i'm guessing that its a security thing because the car works fine with the original key but it stalls with the copy. i cant really say for sure tho.