14 expedition low/rough idle

[Robert F]

I have a 14 Expedition with 65000 miles bought used about 2 years ago. For the last 2 weeks I noticed that while in drive or reverse the idle seems a little low and rough. Took it to dealer and they suggested changing the plugs and tune up for 700 dollars. So before I have them do anything, what else should I look out for that might be something else causing the problem? Thanks.

 

[Trainmaster]

The "tune-up" is nothing more than changing plugs and an air filter. I agree that changing plugs isn't a bad idea and possibly could fix your problem. But it may not, and $700 to change spark plugs boarders on criminal.

 

[JExpedition07]

Your year has regular spark plugs with no issues, $700 is absolutely insane for plugs

 

[07navi]

I will change them for $600 and wash all the windows.

 

[Robert F]

So how hard is it to change the plugs? I know the early 3v had problems so assume the later model years were okay. Might do them my self if I can get the time.

 

[Plati]

My honest & competent local shop (Dewey's in Fairport) put plugs, new rotors & pads (high quality) and NYS inspection in my 2014EL for $700 at 75K. I bought them a pizza.

What is a tune-up? I'm suspicious of the shop advice you referenced. I'm a proponent of diagnosis and then repair. Wonder how they got to the plug & tune-up conclusion? Are there codes? How low is the low idle? My 2014EL 5.4 goes to 750RPM after a brief warm up and stays there in drive or reverse (just a tad lower). I'm no expert by any means but wonder how "plugs" could cause a low idle.

 

[Robert F]

My honest & competent local shop (Dewey's in Fairport) put plugs, new rotors & pads (high quality) and NYS inspection in my 2014EL for $700 at 75K. I bought them a pizza.

What is a tune-up? I'm suspicious of the shop advice you referenced. I'm a proponent of diagnosis and then repair. Wonder how they got to the plug & tune-up conclusion? Are there codes? How low is the low idle? My 2014EL 5.4 goes to 750RPM after a brief warm up and stays there in drive or reverse (just a tad lower). I'm no expert by any means but wonder how "plugs" could cause a low idle.

All I was told was that they detected small misfires and a plug change and tune up would help. They recommend me not to go past 80k without a tune up and plugs

 

[Trainmaster]

There is no "tune up" on these motors. Change plugs and filter. What all these posts are telling you is that you are getting hosed.

 

[07navi]

So how hard is it to change the plugs? I know the early 3v had problems so assume the later model years were okay. Might do them my self if I can get the time.

Easy

 

[ManUpOrShutUp]

Change the plugs yourself. The plugs on these trucks haven't been an issue since 2008.