We've owned this car since new, and has done this I swear 2.5 seconds after warranty ran out. First think in morning, the throttle acts like it's stuck, have to blip the gas pedal, then it's fine. After sitting at work all day, usually it acts the same way, sometimes it's alright. If it only sits for a few hours it's OK too. I tried lubing whatever I could see around the throttle body, etc, but nothing so far has repaired this problem. Any suggestions?