New XLT Maverick w 2 liter eco boost, slight hesitation sometimes

[North Coast Joe]

It could be "drive-by-wire-lag." I had that on my 2020 Honda Passport. Usually, only starting from a dead, or almost dead, stop. I understand it sometimes can be programmed out. I never bothered to ask my Honda dealer.

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[capecruiser]

Well maybe in your case but within 5 miles of driving with 93 octane most of my issues are gone or minimized. I have the FX Maverick w all wheel drive and eco boost 2 liter there is no sports mode. Now when i hit the gas there is almost no sluggishness. My take is the eco boost only runs at 87 is so cheap people would buy it. It probably is not really meant to run on 87 octane, Now it growls when on 87 it whimpered.....

running 5 miles with 93 wont change the tune that quick.

 

[vinnymac]

It's not that it lacks power but sort of hesitates on acceleration mostly when taking off on turns running 87 octane, I think its the 87 octane. Brand new only 360 miles on it would 91 or higher octane fix this?

Give it a try won’t hurt I run 93 all the time and no issues

 

[yyalazin]

Uh, ya, realized it just after I sent it, thanks!

I've been reading about the mod to enable sport and eco mode but not willing to risk voiding warranty despite a lot of posts saying it won't void warranty, I would not bet on it though. I cannot risk it on my 37000 dollar truck there might be a valid reason for the FX not having those modes... 93 octane helped a lot though can't under stand why anyone who could buy a Maverick would run low octane gas in a Turbo charged 2 liter 250 hp 4 cylinder.....

 

[edmc]

running 5 miles with 93 wont change the tune that quick.

The ECU can and will change things that quick FYI. I always run 93 just for peace of mind, and the fun of full power under full boost.

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The ECU (or at least the better ones) can indeed actively 'search' for the point of pinging as you said. The pinging sensor listens to the combustion, based on that the ECU determines how close it is to knocking. Real, actual knocking is audible even to the untrained human ear, but knock sensors can also detect near knocking situations. And that is the most useful functionality.​

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In case this gives better performance, and that is a clear requirement, (the ECU) can advance the timing to the point of near pinging. Obviously not when the power isn't needed, since more spark advance increases NOx emissions due to increased peak pressures and heat.​

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A PID loop continually adjusts the timing to make sure the engine doesn't actually ping, but advances as much as is possible if needed. Thus, the target value of the PID changes according to the demand of the driver, limited by emission regulations.​

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So effectively, it continually measures the effect of the fuel on pinging. Not the octane rating of the fuel itself. That's not what you ultimately want to know, but pinging is. I doubt measuring octane rating is even possible with a sensor.​

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[yyalazin]

running 5 miles with 93 wont change the tune that quick.

Well the tank was close to empty....but there was almost an immediate difference.. who knows . I do know you cannot expect ultra power without the turbo having to spool up...and contrary to any post it is noticeable especially on low octane gas.... maybe after she gets a few more miles or a Ford update or two it will get a lot better....

 

[capecruiser]

I dont think ford will tell you its ok to use 87 octane if it would cause issues. However eco boost motors can benefit from higher octane giving them time to change the tune, I know for sure on Rangers with 2.3 it is not in 5 miles.

 

[yyalazin]

whatever.....

 

[Superg0]

I thought that Ford guy was phony, don’t know what to believe here anymore

He doesn’t do anything except direct you to take your vehicle in to the nearest ford dealership

 

[yyalazin]

there is no real pertinent info here just the usual BS....

 

[Superg0]

there is no real pertinent info here just the usual BS....

As an FX4 owner there is a hesitation that I feel is based on the transmission. When operating in the normal drive mode it’s there. I would refer to it as the transmission determining how to take off in a fuel efficient manner. I added sport mode to mine and the experience is extremely different. There is no mysterious slow to react response when you hit the pedal. I chalk it up to an 8 speed Tranny trying to remain fuel conscious. Sport mode doesn’t account or care for fuel efficiency.

 

[Guv]

As an FX4 owner there is a hesitation that I feel is based on the transmission. When operating in the normal drive mode it’s there. I would refer to it as the transmission determining how to take off in a fuel efficient manner. I added sport mode to mine and the experience is extremely different. There is no mysterious slow to react response when you hit the pedal. I chalk it up to an 8 speed Tranny trying to remain fuel conscious. Sport mode doesn’t account or care for fuel efficiency.

My F150 has a 5.0 and the 10 speed.
Normal drive mode can be a little aggravating because it skips gears.
You can see because it has a display showing the gears 1-10. It always skips 2 and will go from 4th to 6th if I remember correctly. I especially dislike the 1-3 shift and quite often use
tow/haul or sport mode because they don’t skip.
I can’t really tell if my FX4 is skipping gears.
I know they are different but I believe the fuel saving strategy is the same.
If you floor the 10 speed it uses all the gears.

 

[Superg0]

My F150 has a 5.0 and the 10 speed.
Normal drive mode can be a little aggravating because it skips gears.
You can see because it has a display showing the gears 1-10. It always skips 2 and will go from 4th to 6th if I remember correctly. I especially dislike the 1-3 shift and quite often use
tow/haul or sport mode because they don’t skip.
I can’t really tell if my FX4 is skipping gears.
I know they are different but I believe the fuel saving strategy is the same.
If you floor the 10 speed it uses all the gears.

I have a JB4 that has a gear indicator. 2nd gear is rarely used. About the only time I see it is if I use my paddle shifters to downshift into it. It almost exclusively goes from 1st to 3rd

 

[Guv]

I have a JB4 that has a gear indicator. 2nd gear is rarely used. About the only time I see it is if I use my paddle shifters to downshift into it. It almost exclusively goes from 1st to 3rd

JB4?

 

[Superg0]

JB4?

It's a tuner
https://burgertuning.com/products/j...c1bQ6zXHbSIFHeA9YGmwSSrpxRkfTdfdCbhRiMC7XzAAp

The app has gear indicator

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