What is Lock Up? Curt Explains how lock up works
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- เผยแพร่เมื่อ 9 ม.ค. 2025
- Curt addresses a common question : 'what is lock up, and do I need it?' He shows how lock up works between the transmission and torque converter, and explains some of the advantages of running lock up.
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Thank you! I was beginning to think my 96 accord had 4.5 gears lol
You solved part of the mystery. I would have liked to see more detail on the hydraulic circuit and how it applied the pressure to force the clutch plate against the case. Thanks for the vid.
Dude, I’m going though this rabbit hole with me new(old) LR Disco 3. I’m pretty sure the answers to your question is the control module and solenoids. Either that or black magic and sorcery 🤙
I've always wondered how this sorcery worked.
I used to have a 1964 Pontiac Bonneville with a Jetaway Hydramatic, and I'm pretty sure it had some kind of lock up in the fluid coupling. In fact, one time, I had to slam on brakes, and the engine stalled because it didn't disengage quickly enough.
Thanks !! as clearly as water ! no one was able to explain this way ! thanks a lot !
You are welcome!
Well when I was 19 I worked for small company that put the liners on the plates never knew what they were for till now 12 years later
Great explanation!
Thank you for a great explanation.
You are welcome!
My dad has an automatic w202 mercedes with the 5 speed auto. If it's in a more dynamic driving mode it holds gears and revs when you lift and engine brakes. It literally behaves and sounds like a manual car
i just learned my 06 5 series does this in 2nd gear lol. crazy
Hey we build your purple units at AER precision transmissions in Fort Worth Texas, I can say that you guys put the good stuff in your units
Clear explanation. Thanks
Glad it was helpful!
Best trans company around!
Hey @monster transmissions. How quickly can a trans fail if you are running a lock up not locked? I have a TH350C and I have about 50 miles on it but I have not hooked up the switch to manually lock up the TC. It has been smelling rather like cluth plates burning (at higher RPM) is it toast, or can it recover ?
Unfortunately, if it's burnt there isn't any saving them and it would need to be rebuilt. And yes running the TC will cause issues with overheating the fluid and the converter.
Good explanation!
Thanks!
I'm pretty good at trashing lockup converters. Lol
I have a 700r4 in a 5.3 ls s10 i just bought. How would i know if this is wired up and working correctly?
I have a 2001dodge ram 1500 5.9L idles great in park and neutral but as soon as you put it drive or reverse it just bucks and stalls, I was told it was a torque converter lock up switch/solenoid. I seems like the converter is locking up too quick and that's why the truck stalls. Could I bypass the TC switch with a manual lock up switch in order to be able to drive my truck?? Thanx for any response in advance, this problem has about drove me crazy trying to figure it out!! Lol
Not recommended i would look at why its stuck on, could be solenoid or stuck valve
@@MonsterTransmission I have discovered that it's not the solenoid, I'm thinking the converter itself is locked up, idk, I may try to put a new converter on it and see if that helps, thanx
Hi. I have. Dtc code 4e70.... Torque converter luck up clutch.
What can be the problem please
Thanks
Very helpful video
Glad it was helpful!
Hey Professor Curt , my 4l60e 04 silverado just lost overdrive. Is it ok to still drive without further damage!?
Also thank you for all the lessons!
No you should not drive it, you will do damage once it gets totally burned the clutches will come apart
@@MonsterTransmission thank you sir !
We rebuilt the transmission but still have no 4th gear , chasing the ghost is a pain in my neck , any input from you would be mostly appreciated !!
Depends on the unit but if its an electronic need to see if its being commanded and if its hydraulic style I would check the governor.
@@MonsterTransmission will get on that soon .thank you !
I thought the transmission fluid flow into lockup clutch was to disengage lockup and blocking the fluid flow allowed the engagement of the clutch?🤷🏼♂️
It actually helps push fluid to apply the clutch
So I need to take out the plate or do I have to buy a special converter
There is a lot that goes into building a converter and would only recommend trained professionals to attempt modifying them. A bad converter can wreck you're whole transmission. We suggest talking to our friends at www.ThorConverters.com/
Always wondered
my 4l60e pops in and out of lock-up in overdrive. what could it be
We would recommended checking his brake switch and tps
THX !
What if I have lock up in drive 1st and reverse. 68rfe wants to take off with break applied. Every thing else shifting wise is normal??? Any suggestions????
Sounds like the 68rfe tcc is stuck on or internal tc damage
@@MonsterTransmission thanks I sent the TQ in to get checked out. The TCC is in the valve body correct?
@@MonsterTransmission and not throwing any codes…
Only the besr!
Best