2016 3.5 Ecoboost 56k miles rough idle
06-23-2017, 09:49 PM
#1
Junior Member
Thread Starter
Join Date: Jun 2017
Posts: 25
Likes: 0
Received 0 Likes
on
0 Posts
2016 3.5 Ecoboost 56k miles rough idle
So I have a 2016 F150 platinum with a 3.5 ecoboost engine. I've been trying to find the solution to my problem. When my truck idles around 500rpms to 700rpms the truck has a rough idle. When I drive the truck everything is good but as soon as I stop at a red light you can feel it. If you open the door and watch the door you can see it. Ford has replaced the throttle body and I have also replaced plugs. The truck is at the dealer and they are waiting for Ford to give them directions on what to do next. Any ideas?
Last edited by Trey Driver; 06-23-2017 at 09:50 PM. Reason: Typeo
06-23-2017, 09:56 PM
#2
Plugs gapped properly?
06-23-2017, 09:59 PM
#3
Junior Member
Thread Starter
Join Date: Jun 2017
Posts: 25
Likes: 0
Received 0 Likes
on
0 Posts
06-23-2017, 10:01 PM
#4
Originally Posted by Trey Driver
All gapped properly. My truck has been at the dealer for about a week. I have read about carbon build up on the valves. I wonder if this is the cause of the rough idle.
06-23-2017, 10:03 PM
#5
Junior Member
Thread Starter
Join Date: Jun 2017
Posts: 25
Likes: 0
Received 0 Likes
on
0 Posts
06-23-2017, 10:34 PM
#6
Senior Member
Likely spark. So the thingy in top of one of the plugs is bad?
Trending Topics
06-24-2017, 07:13 AM
#8
My 2015 3.5 eco has a rougher idle than my 2008 5.4 Expedition with 187,000 miles on it.
I think it's the transmission. I change the fluid in my Expedition every 50,000 miles and it's a very smooth idle.
I think it's the transmission. I change the fluid in my Expedition every 50,000 miles and it's a very smooth idle.
06-24-2017, 08:22 AM
#10
Chevy recently had this issue. TSB said to replace the motor mounts. After that wouldn't work, dealer said it was operating as designed. Now I have a Ford. Hope they get you squared away.