I have a 04 f150 with around 125k miles, and im having issues with the idle at redlights and in traffic...I recently had the intake manifold gasket changed, for engine light was on, and it was running rough in cold weather, when warming up..since then, i have no check engine lights on, and ive had test done for vacuum leaks and what not, and no one can seem to find whats wrong..no codes pull up, so i dont know what else to do...i cleaned my throttle body a few weeks ago, but that didnt seem to help...has anyone else complain of the same