If you have a rough idle OR poor gas mileage please respond
Technical Article Contributor
Joined: Aug 2006
Posts: 7,862
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From: Northern California
2004 scab 4x4 80k miles
had a rough idle for a while, it also idled at really low RPMs. the edge didnt fix it. finally got troyer tunes and mentioned to him that i wanted it to idle a little quicker, its been perfect since.
a custom tuning specialist can fix all of these problem, and write specific tunes to improve fuel economy.
im averaging 13.8 around town and almost 18 on the interstate. K&N CAI, Flowmaster duals, Troyer 87 tune.
had a rough idle for a while, it also idled at really low RPMs. the edge didnt fix it. finally got troyer tunes and mentioned to him that i wanted it to idle a little quicker, its been perfect since.
a custom tuning specialist can fix all of these problem, and write specific tunes to improve fuel economy.
im averaging 13.8 around town and almost 18 on the interstate. K&N CAI, Flowmaster duals, Troyer 87 tune.
Senior Member
Joined: Feb 2007
Posts: 841
Likes: 0
From: Austin Texas
Originally Posted by mSaLL150
2004 scab 4x4 80k miles
had a rough idle for a while, it also idled at really low RPMs. the edge didnt fix it. finally got troyer tunes and mentioned to him that i wanted it to idle a little quicker, its been perfect since.
a custom tuning specialist can fix all of these problem, and write specific tunes to improve fuel economy.
im averaging 13.8 around town and almost 18 on the interstate. K&N CAI, Flowmaster duals, Troyer 87 tune.
had a rough idle for a while, it also idled at really low RPMs. the edge didnt fix it. finally got troyer tunes and mentioned to him that i wanted it to idle a little quicker, its been perfect since.
a custom tuning specialist can fix all of these problem, and write specific tunes to improve fuel economy.
im averaging 13.8 around town and almost 18 on the interstate. K&N CAI, Flowmaster duals, Troyer 87 tune.
where can I go to have my edge custom tuned??
Technical Article Contributor
Joined: Aug 2006
Posts: 7,862
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From: Northern California
Originally Posted by Ballin STX
where can I go to have my edge custom tuned??
Senior Member
Joined: Aug 2007
Posts: 2,472
Likes: 1
From: Des Moines, IA
I've got the 2005 4.6 with around 58k miles. im averaging around 13-18 with a driving style of about 4 or so. i had a rough idle for a few weeks and i got the fuel filter replaced as well as plugs and it fixed it. if its sitting around idling for more then 15 min then it gets a bit rough but nothing that i find weird.
Senior Member
Joined: Dec 1999
Posts: 1,410
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From: Sunapee, NH
Ok, I'll bite...
98 F150 4.6, rough idle, 15 mpg
01 F150 5.4, rough idle, 14 mpg
03 F150 4.6, rough idle, 15 mpg
04 Expedition 5.4, rough idle, 14 mpg
07 F150 5.4, rough idle, 16 mpg
Unfortunately, rough idles with the Modular motor is common. Dealers, at least in my area, all say it's normal and there's nothing you can do. I'm going to see what I can learn using my autotap software, but not going to worry much about it.
So, where are we going with this list?
98 F150 4.6, rough idle, 15 mpg
01 F150 5.4, rough idle, 14 mpg
03 F150 4.6, rough idle, 15 mpg
04 Expedition 5.4, rough idle, 14 mpg
07 F150 5.4, rough idle, 16 mpg
Unfortunately, rough idles with the Modular motor is common. Dealers, at least in my area, all say it's normal and there's nothing you can do. I'm going to see what I can learn using my autotap software, but not going to worry much about it.
So, where are we going with this list?
Senior Member
Joined: Nov 2007
Posts: 185
Likes: 0
From: Georgia, USA
Originally Posted by svt2205
Ok, I'll bite...
98 F150 4.6, rough idle, 15 mpg
01 F150 5.4, rough idle, 14 mpg
03 F150 4.6, rough idle, 15 mpg
04 Expedition 5.4, rough idle, 14 mpg
07 F150 5.4, rough idle, 16 mpg
Unfortunately, rough idles with the Modular motor is common. Dealers, at least in my area, all say it's normal and there's nothing you can do. I'm going to see what I can learn using my autotap software, but not going to worry much about it.
So, where are we going with this list?
98 F150 4.6, rough idle, 15 mpg
01 F150 5.4, rough idle, 14 mpg
03 F150 4.6, rough idle, 15 mpg
04 Expedition 5.4, rough idle, 14 mpg
07 F150 5.4, rough idle, 16 mpg
Unfortunately, rough idles with the Modular motor is common. Dealers, at least in my area, all say it's normal and there's nothing you can do. I'm going to see what I can learn using my autotap software, but not going to worry much about it.
So, where are we going with this list?
The truck seems like secondary ign issue, but evidently it is "normal". We have a few vans and some F250 at work I will have to make a point to check them for this shaky idle.
Suspended
Joined: Nov 2004
Posts: 17,079
Likes: 0
Originally Posted by Ballin STX
I had the rought idle until I started using better oil, I went from using crappy castrol gtx oil and switched to using royal purple synthetic, all I gotta say is the rough idle was gone. I also noticed a gain in HP AND better gas mileage!
From now on thats all i will be running in my truck.
From now on thats all i will be running in my truck.
Senior Member
Joined: Oct 2005
Posts: 227
Likes: 0
From: New Bern, NC
Originally Posted by ThumperMX113
Really? .. you felt the difference in a oil change? That must be one accurate ***-o-meter you've got.
http://kalecoauto.com/index.php?main...products_id=41
Member
Joined: Dec 2006
Posts: 52
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From: Langley, BC Canada
Originally Posted by 2005lariatky
Last few fill ups have been low 13's with Edge on Level 2. Next fill up is going to be premium on Level 3 and see if it gets any better.
Senior Member
Joined: Jan 2007
Posts: 732
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From: Carrollton, KY
Originally Posted by tohi2care
What milage are you getting with 87 octane (regular) and no edge? Because isn't putting your Edge on lvl 3 and using 94 octane (premium) to get better milage pointless? Your spending more money to use 94 and it's on lvl 3 so obviously your going to be using more fuel then lvl 2.
Senior Member
Joined: Dec 2004
Posts: 2,155
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From: Indiana
Originally Posted by Oxlander
Go into the settings on the Edge Evo and bump up the idle RPMs by about 150. I did this and the rough idle is gone. It seems that with the cooler weather, we turn off our air conditioners and the engine rpms at idle drop too low, thus creating a rough idle.
On a scale of 1 - 10 for driving habits, I would rate myself as a 3. very conservative. I am averaging 16-17 mpg in mixed driving.
For truck info look at the sig.
On a scale of 1 - 10 for driving habits, I would rate myself as a 3. very conservative. I am averaging 16-17 mpg in mixed driving.
For truck info look at the sig.
Thanks
EDIT: nevermind... I found this posting https://www.f150online.com/forums/sh...d.php?t=315577
I guess its in the custom settings but they just don't talk about it in the manual? I'll try it after work today.
Last edited by mkosu04; Jan 11, 2008 at 12:31 PM.
Senior Member
Joined: Nov 2007
Posts: 185
Likes: 0
From: Georgia, USA
Originally Posted by ThumperMX113
Really? .. you felt the difference in a oil change? That must be one accurate ***-o-meter you've got.
Senior Member
Joined: Jan 2005
Posts: 599
Likes: 0
From: Marshall, Tx
Originally Posted by mkosu04
Oxlander - I looked at my Edge manual last night and it doesn't say anything about the idle RPMs in the custom settings. How do you change this?
Thanks
EDIT: nevermind... I found this posting https://www.f150online.com/forums/sh...d.php?t=315577
I guess its in the custom settings but they just don't talk about it in the manual? I'll try it after work today.
Thanks
EDIT: nevermind... I found this posting https://www.f150online.com/forums/sh...d.php?t=315577
I guess its in the custom settings but they just don't talk about it in the manual? I'll try it after work today.