this seems to be quite a problem. For the last month or so if my truck sits for more than an hour, when I start it up and accelerate like normal the rpms wont go past 2500 all of a sudden theyll shoot up to what they sould be then immediatly go back down, up and down for the first couple mins i drive it. Putting it to the floor seems to make it go away faster but it doesnt sound very good when i do it. does any one know what the hell is wrong w/ my truck?