What's up guys, '14 GT here. Does anyone else have a slightly rough idle? I'm talking like 20 RPM variations with up to 80 or so very rarely. My car is stock except for a JLT oil separator, Ford Racing axle backs, and Barton two post bracket. I feel like I've seen this from day one, but figured I'd ask you guys before wasting my time at the dealership.

Thanks

 

I've noticed this a lot too on my '13, happened since I got the car new as well. It's very prominent when the engine is cold or when the AC is on, it's also very rough at high altitudes.

 

Well its suppose to idle a little high on start up as most new cars do this to help the motor warm up. If you man you get a little higher when just stopped at a red light or whatever then I'm not sure. I do know that it will rev (rpm jump) when the a/c is running at idle. Sometimes the car has a slight shake to it like a rough idle but its just the a/c. My '14 does it and my '12 I had.

 

part of the TiVCT.

 

My idle started acting up several months ago, had a small air leak in my JLT oil separator. I changed the hoses and put metal fittings, fixed the idle.

Your idle will go up and down a little when the air kicks on and off.......Just saying