new member

[szurcher]

hello to everyone i do not own an exp,the company i work for owns about 30 and i do the mechanics and pms on them, i run in problem trying to repair them sometimes, i have a 2005 4.0 when you start the engine it rev to 2300rpms and slowly drops down i have check for vaccume leaks replaced iac and foot switch and still nothing i would be thankful for any kind of help

 

[BrooklynBay]

Welcome to this forum! It's possible that the program might need to be upgraded for the throttle by wire system. Do a search on this site for throttle by wire, and see if you could get the information that you need.