My 2004 mazda tribute has been having trouble lately. If it has been several hours since its been driven then when i start go to start it..it starts then almost sounds like its gonna die immediately. It doesnt die completely though and when i have the headlights on the head lights go dim but then when i hit the gas the lights brighten back up again. after it has been driven for a few minutes then it acts normal. It occasionally will completely die if while im sitting at a stop light. I was just wondering if anyone had any ideas as to what this might be? im planning on taking it to the mechanic this weekend.