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F150 with the 3.5L twin turbo eco boost
236 messages, Last post on Apr 21, 2013 at 8:42 PM
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What is this discussion about? Ford F-150, Truck
#192 of 236 Re: 2011 Ford F150 Eco Boost [bubbabud] by michaelalso
Sep 24, 2012 (6:02 pm)
Replying to: bubbabud (Jul 02, 2011 6:58 am)
I took delivery of my Ecoboost 150 super cab Platinum on 7/29/12 have about 2900 miles on it. Drives very quite and well, plenty of power but gas mileage is on average 13.6 mostly Highway with some city. Even with cruise control on, and on very level west Texas driving condition non-stop 467 miles, managed only 15.1 mpg. no WEIGHT OR TOWING just three persons., checked using (full tank top off to full tank top off). Gauges are a little off They said I had 15.6 MPG and 1.6. more gallons of gas than I really did. Still love the truck, but gas mileage seems to be way short of expectations. I would still recommend it as my 2011 Toyota Tundra get only 14.8 also but is not in the same league as the F150 on everything from comfort to caring load to range to fill up (Ford has 36 gals).
#193 of 236 Ecoboost FX2 by tkevinc1
Oct 01, 2012 (7:53 pm)
I purchased a truck with the Ecoboost engine a couple of months ago and am now approaching 3000 miles. I have had zero issues and in mixed driving have averaged around 19mpg and have gotten as good as 24mpg at 75mph on the interstate. I drove trucks equipped with the 5.0 and 3.7 prior to purchase and found that neither offered any competition in terms of acceleration and response but I do zero towing. While I will keep my fingers crossed that I have none of the shutdown issues that some seem to be having, I am very impressed with the drivetrain including the 6 speed transmission. I hope the rest of you are able to resolve those issues and enjoy your trucks as much as I am.- big_mpg (Jan 06, 2013 11:02 am)
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#194 of 236 Re: Eco Boost Not ( sevenman ) [ontheshoulder] by wwest
Oct 02, 2012 (6:15 pm)
Replying to: ontheshoulder (Sep 24, 2012 10:20 am)
During highway cruising and due to the resulting constant pressure gradient on the exit side of the intercooler when operating in a climate with a low OAT/Rh span condensate forms inside the exit end cap and you end up with a puddle of water in the bottom of that end cap. Not a real problem with the low velocity airflow required for simple cruise mode. But romp on the gas pedal, BOOOST comes on, intercooler air velocity goes UP, "washing" much of that puddle of water directly into the intake manifold.
That, of course, results in not just a few misfires and the ECU decides something has gone TERRIBLY wrong and puts the engine in "limp home" mode.
The most obvious DIY cure is to drill a small hole in the very bottom, lowest point, in the intercooler outlet end cap, solder in a modified(***) brass nipple, and couple the nipple to the intake manifold vacuum via a rubber tube.
*** Fill the nipple end with solder and then drill an opening orifice through the solder using the smallest drill bit you can come by.
In cruise mode the high manifold vacuum will suck any condensate, as it forms, into the manifold with a low enough volume no detriment will result.
Assuming the new orifice is small enough the DBW will eventually adapt to the new source of "idle" intake airflow. Or you can force a quicker adaptation via disconnecting the battery briefly.
#195 of 236 Amazing by wwest
Oct 03, 2012 (2:40 pm)
Ford's latest, most recent, effort in designing a new F150 EcoBoost intercooler that reduces the propensity for internal condensation appears to have come a cropper...#196 of 236 Re: What the? Wwest... [bigmclargehuge] by stevedebi
Nov 01, 2012 (4:12 pm)
Replying to: bigmclargehuge (Jun 07, 2012 7:31 pm)
"Stop trolling Ecoboost forums, or at least troll one like F150 forums where half the posters are mechanics. Because 1-on-1 you just get more belligerent, even when I was talking total sense to you. " No such luck, this guy trolls just about every forum I see, including other sites, always making statements that don't hold up. On some other sites I can choose not to see wwest posts, but unfortunately here I have to check to see who is posting, so I can ignore him.
Don't feed the trolls...
- wwest (Nov 02, 2012 9:30 am)
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#197 of 236 Re: What the? Wwest... [stevedebi] by wwest
Nov 02, 2012 (9:30 am)
Replying to: stevedebi (Nov 01, 2012 4:12 pm)
Speaking of which... I'm making a concession.....
The F150 EcoBoost's turbocharger provides BOOST pressure, pressure slightly above atmospheric, ahead of the CAC even in cruise mode.
How else could there be a significant enough pressure drop across the CAC that condensation forms...?
On the other hand there is NO WAY that boost pressure can be allowed to reach the actual intake manifold, intake valves, absent producing enough engine torque for a serious level of acceleration.
At first glance it appears foolish to have the turboes spun up enough to produce a significant level of boost even in cruise mode and then simply throttle the flow into the intake manifold.
Or maybe.....
Have the BOV open at all times if the throttle plate is not fully open, WOT.
What purpose would all that serve..?
Undoubtedly alleviate a high degree of turbo lag?
A carry-over engineering design aspect of the T-Bird SC...?
The early Birds used a BOV/bypass valve to route the output of the SC back into the input unless the throttle position indicated a requirement for boost. The problem that arose with that technique was that the temperature of the recirculating airflow sometimes rose to the point that engine damage would result.
Ford's answer....RECALL...add an "intercooler" in the BOV recirculate airstream AHEAD of the SC intake.
Technique sound all too familier..???
#198 of 236 Re: 2011 Ford F150 Eco Boost [michaelalso] by harley060107
Nov 06, 2012 (6:21 am)
Replying to: michaelalso (Sep 24, 2012 6:02 pm)
I'm curious to know if you've seen any improvement in mileage now that you have more miles on your truck. I assume you also have a 373 axle ratio. We ordered the exact same rig and so far I have been questioning the mileage and have 2998 miles on our rig. Did you're mileage improve over time? City mileage seems to vary between 14 /15 mpg , while hwy is disturbing getting 17 maybe.... Sure it will pull without an issue but I expected more as well.
#199 of 236 Re: 2011 Ford F150 Eco Boost [michaelalso] by vzttor
Nov 17, 2012 (1:18 am)
Replying to: michaelalso (Sep 24, 2012 6:02 pm)
At times, it's your style of driving why your not getting good mileage. Also, give engine a change to get broken in and, I bet you, you'll get better mileage. Enjoy your F-150. I love mind.
- harley060107 (Nov 17, 2012 4:21 am)
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#200 of 236 Re: 2011 Ford F150 Eco Boost [vzttor] by harley060107
Nov 17, 2012 (4:21 am)
Replying to: vzttor (Nov 17, 2012 1:18 am)
I'd like to agree but I'm a retired PTSE Manager and also did power train packaging for D3 (Taurus,Sable,Explorer,etc). Mapping the processor and driving habits are not the issue, understanding the system is. I'm trying to better understand this issue. Many have experienced the same; do I love the rig yes, but at $50,000.00 a copy at this stage of the game development should not be one of them. I appreciate that yours runs good, you and others like you are the reason I sprung the bucks for a new 2012 Platinum to pull a 8000# trailer. Unfortunately i am not currently surprised and delighted and trying to better understand the root cause.
#201 of 236 Re: 3-mode 2-compressor BS [dieselone] by harley060107
Nov 17, 2012 (4:36 am)
Replying to: dieselone (Apr 24, 2012 6:10 pm)
Refer to # article #200...... I don't agree! Understanding the system and fixing the issue whatever the root cause is. This could be a stellar platform and sure beats the diesel alternatives with far less maintenance cost.
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