I just read the part about it bucking a little i wonder if your torque converter is not completely releasing the computer auto adjusts the idle for the load from the torque converter if its sticking on a little it may cause the erratic idle as well. Have you flushed the fluid recently? that may help it out. also if you flush it change the filter the oil passages may be getting plugged up with contaminants. it fits all your symptoms as the fluid heats up it thins some so that could allow it to slip passed the blockages if any seeming to correct he problem.
New DD-2009 Ford Mustang GT/CS candy apple red.
(sold)2003 XLT Tan 3.0L V6 5-speed, Lots of mods.
Last edited by pearlkid9988; 11-20-2013 at 09:59 PM.
Reason: reread first post