Two weeks ago the 05 FX4 lost the refrigerant charge during a HOT spell, and last week both the engine service and electronic throttle control lights came on. The dealer replaced an A/C hose that that had chafed through fixing that problem. They also found two codes in the computer. P2106 Forced Limited Power and P2135 TP Sensor Intermittantly Open. They replaced the Throttle Position Sensor (TP), and reflashed the PCM (CC 42 CCC E29). One consolation, the engine hesitation I've experienced since the truck was new seems less pronounced now.

 

only 24 on your 05? My 06 has 29 lol