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Low RPM engine Lug rabbit hole

MarioCart

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Just run sport mode. You're gonna look goofy with smaller tires.
True words.
There is a sweet spot, and while we haven't seen too many Ranger owners go with a small tire/wheel combo, we have seen many on here go the opposite direction and have an equally dumb looking truck.
I'm honestly sad though, none of our members have squatted a Ranger yet. The fodder/ribbing/shame we could throw at them would be hours of endless enjoyment.
 

MountainGoat

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True words.
There is a sweet spot, and while we haven't seen too many Ranger owners go with a small tire/wheel combo, we have seen many on here go the opposite direction and have an equally dumb looking truck.
I'm honestly sad though, none of our members have squatted a Ranger yet. The fodder/ribbing/shame we could throw at them would be hours of endless enjoyment.
IMO the sweet spot is what I did, Tremor sized tires, Bilstein level and a Livernois tune to kick up the power and fix the shifting. Any more lift and you get into needing upper control arms at $800 a pop...and any more engine mods is decreasing returns on the power.
 

Motorpsychology

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Seriously. Press the button for Tow.
10-4. Decontent-happy Ford could just eliminate the regular shift pattern and just have the Tow pattern. EPA cycle? Send a dozen Rangers over to them; within a week of driving around DC, they'd give the Ranger an exemption for Trailer tow.
Wink.webp
 

DranC

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I chatted with a mechanic today, I told him about the low RPM engine lug with the 2021 Tremor (stock 265/70/17 wheels). Aside from putting the truck in the different modes (trailer/Sport) His suggested to decrease the tire size, he said that decreasing the tire size will increase the RPM's where as a larger tire size will lower the RPM's. Has anyone with the low RPM lug/shudder found a difference/sweet spot with changing their tire size? Thanks in advance!
I went from 255/65/17 to 245/65/17 and still have an occasional lug/jerk/hesitation, but nothing that I'm concerned about.
 


Motorpsychology

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bbeverag

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The Ranger does not lug!
I disagree with your statement. I drove a manual transmission for many years, and in fact from 2013 to 2023 I drove a turbo 4 with a manual, so I know exactly what a lugging turbo 4 feels like. I don't think the ranger does it often, but I do find it will hang in a higher gear when you decelerate by simply lifting off the accelerator. It then takes longer when reapplying the accelerator to drop a gear or two than I would, if I were in control. This is especially noticeable if it is in 7th gear. It does eventually drop to 5th or even lower, but it takes a few seconds, likely due to the fuel economy strategy Ford settled on.
 

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I disagree with your statement. I drove a manual transmission for many years, and in fact from 2013 to 2023 I drove a turbo 4 with a manual, so I know exactly what a lugging turbo 4 feels like. I don't think the ranger does it often, but I do find it will hang in a higher gear when you decelerate by simply lifting off the accelerator. It then takes longer when reapplying the accelerator to drop a gear or two than I would, if I were in control. This is especially noticeable if it is in 7th gear. It does eventually drop to 5th or even lower, but it takes a few seconds, likely due to the fuel economy strategy Ford settled on.
Unless there is a problem with the automatic transmission the Ranger does not lug whatsoever. That is the joyful thing about automatic transmissions. How you ask? Simple. This comes down to the fact that a automatic transmission is a hydraulic driven type device. A manual transmission is all mechanical. It's very hard to lug with a hydraulic driven device unless the hydraulic driven device AKA the transmission is having major problems
 

bbeverag

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Unless there is a problem with the automatic transmission the Ranger does not lug whatsoever. That is the joyful thing about automatic transmissions. How you ask? Simple. This comes down to the fact that a automatic transmission is a hydraulic driven type device. A manual transmission is all mechanical. It's very hard to lug with a hydraulic driven device unless the hydraulic driven device AKA the transmission is having major problems
Lugging is caused by low RPM with a high load, which is caused by the wrong gear. It doesn't matter if it is an automatic or a manual, being in too high of a gear will cause lugging. That is all there is to it, too high of a gear for a RPM/load.
 

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Have you ever driven a vehicle with a manual transmission? If not then you don't know what lugging is!! I know what lugging feels like as I did it when learning to drive a manual transmission and my dad's fist went through my side!!

The Ranger does not lug! All it does.is.vibrate due to being a 4 cylinder that does not have great low end torque. Once it starts to build boost it starts to build torque. Once that happens the vibration goes away.

Don't like it? Sell it and get a different vehicle and deal with it
Yes!!
 

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Lugging is caused by low RPM with a high load, which is caused by the wrong gear. It doesn't matter if it is an automatic or a manual, being in too high of a gear will cause lugging. That is all there is to it, too high of a gear for a RPM/load.
where is the proverbial line drawn in the sand that makes this low rpm vs load a problem?
We cant be worried about a mythical possibility if we can't determine when the LSPI issues present themselves
 

Frenchy

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Lugging is caused by low RPM with a high load, which is caused by the wrong gear. It doesn't matter if it is an automatic or a manual, being in too high of a gear will cause lugging. That is all there is to it, too high of a gear for a RPM/load.
And yet with an Automatic Transmission you don't have near as high of a.load compared to a Manual Transmission since the Automatic Transmission is a Hydraulic Pump with pressure relief valves in place to prevent high over load on the Engine diving it. A Manual Transmission does not have such since it is a direct mechanical connection.
 

Grandaccess

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I chatted with a mechanic today, I told him about the low RPM engine lug with the 2021 Tremor (stock 265/70/17 wheels). Aside from putting the truck in the different modes (trailer/Sport) His suggested to decrease the tire size, he said that decreasing the tire size will increase the RPM's where as a larger tire size will lower the RPM's. Has anyone with the low RPM lug/shudder found a difference/sweet spot with changing their tire size? Thanks in advance!
265/ is the stock size, they want you to go smaller?
I am running 285/70 dont see lug much maybe once a day in a city situation running in (D) never in (S) ...
 

Rp930

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Frenchy is right. The reality is you are only going to get so much torque down low with 140 cubic inches. Especially a low compression turbo engine. Gotta have rpm to develop torque. The smaller tire idea is a joke. It still won’t have any torque down low. Get over it.
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