yup. 34.3”
Torque Converter Lock-Up Control System
- Thread starter mep1811
- Start date
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- Thread starter
- #22
How did you get that display on the truck display?
You’ll get better gas mileage when locked up, but you likely stay locked up on the highway 95% of the time. Unless you’re accelerating to pass or climbing a slight grade, the TC is already locked. In most cases you’ll get better mileage with the TC unlocked in a higher gear than locked in a lower gear, so if the transmission downshifts one gear instead of unlocking, your mileage will be worse.
The TC Lockup is really for heat management for those towing, or other scenarios where you are hunting for the right gear.
kcjaz
SILVER Star
It’s an aftermarket Tesla style Android head unit.
- Thread starter
- #25
Nice.
- Thread starter
- #26
Is that an easy upgrade?
kcjaz
SILVER Star
I wouldn’t call it easy but it isn’t really that hard. Being familiar with Android (I wasn’t) would help. Lots of info here on this:
EC Off-road Installation
Bought the EC Off-road for my 2021 HE and trying to decide if I want to install it myself. The videos they sent along talk about a HDMI cable to connect the rear camera to the head unit, but don’t show the install because the vehicle they’re working on is a VX and not a Sahara. I assume the VX...
forum.ih8mud.com
There is no separate transmission ecu. It’s a single PCM that has maps for both engine and transmission and it’s absolutely tunable with VFTuner right up to 2021 trucks. HPTuners can tune up to 2015 200’s afaik.
Shift points, TC lockup are both available to edit. They also have inputs for tire size and axle ratios in the tuning.
bloc
SILVER Star
Do you know whether these inputs have a tangible impact on how the transmission shifts?
I don’t. I have not messed with them or flashed my truck with VFTuner yet.
I suspect that they also don’t affect the speedometer if I had to guess. I kinda suspect the abs computer or bcm may handle that.
Just based on my experience with tuning Fords, their PCM’s did not use the internal tire size or gear ratio values. They were setup to ask the BCM the what the values were. In the Ford tunes you could switch the PCM to look at its internal values and then it would ignore the BCM values. However, we had a 3rd party version of Fords version of techstream which allowed us to edit the values in the BCM and avoid messing with the PCM.
Long story short, it could be more complex then just changing the value in the tune to get everything happy
I intend to try it but I’ve been traveling for work for like 3 weeks now. I also am not sure if I am going to have an issue flashing the LX since I only bought the personal use version of VFTuner and had previously used it to flash my GX460. I gotta see if it will even let me.
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I’ve not seen 4th lock up for me. And the maps I’ve looked at in VFTuner suggest it never does.
But yeah you’re right it does unlock while coasting in 5th and higher but as soon as I roll back into the throttle while towing it locks right back up.
Yes but I believe the 6 speed is usually locked in 4, 5 and 6. Your 4th gear is almost identical to my 5th. So at least on flat ground or moderate hills you should be locked up most of the time.
Mine is an 8 speed
I quoted you in a different post.
You’re right. I’m not paying very good attention or maybe I just think everything is about me
I had the Cruiser Brothers Torque Converter Lock-Up Control System and transmission cooler installed on my 2013 200 Series.
The lock up feature is great . Engine braking is just like having a manual transmission. Where I would have to constantly hit the brake when downshifted to slow down I do not have to do that when locked up.
With the trans cooler , the transmission runs about 10 degrees cooler than before. I did one test towing my off road trailer the converter locked up and the trans ran about 10 degrees cooler that usual.
I'm curious to see if there is any mileage improvement locked up while on the highway. I think these upgrades are well worth the money.
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What difference does it make on trans temp?
Going across the Mojave with a trailer my trans was from 198 to 204, mostly 180's and 190's
My 8 speed seems to lock in gear when I run in the "S" mode, like S2 seems to lock in 2nd when going down hill. I don't think the torque converter lock is for the 8 speed.
- Thread starter
- #37
I have not done any real testing but a short test showed lower trans temps and the engine braking is great.
“S” mode will lock out gears above the number you select, but afaik the transmission will still downshift to a lower gear automatically if you push down on the pedal enough to trigger it.
Mine won’t shift down to first unless I’m going like 10mph though
Just dropped my car into the transmission specialist for a service. I told him about the lockup kit in it. (It was in the car when I bought it).
His advice was strong and with backup. DO NOT USE A LOCKUP KIT, remove it from the vehicle.
He went on to say that the lockup clutch in the TC is only 10mm wide, and forcing lockup will destroy the clutch. He's even been called to court as an expert witness to testify that.
I have a lockup kit for sale if anyone would like it. (going cheap!)
Chris.....
His advice was strong and with backup. DO NOT USE A LOCKUP KIT, remove it from the vehicle.
He went on to say that the lockup clutch in the TC is only 10mm wide, and forcing lockup will destroy the clutch. He's even been called to court as an expert witness to testify that.
I have a lockup kit for sale if anyone would like it. (going cheap!)
Chris.....
So do, some don't. I remember a Ford my parents had in the 70's. Was a V8 (4.9L) with a Borg-Warner auto. If you selected '2', that was all you got, right from the start.
