Jump to content

Do I not understand traction control?

Railhead_Ed

Recommended Posts

Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted
2 hours ago, Mozzer said:

So it's slipping / unlocked most of the time? I am not an expert in auto boxes by any means but wouldn't that wear the torque converter out quicker?

Nope. Converters are a fluid clutch meant to slip but slip creates heat. It get worse as the stall gets higher. At 1500 rpm, about the stock 6L80E stall the converter is slipping only about 2-3%. Newer transmissions implement a clutch added to the converter that earlier transmissions like the TH-400 and C-6 did not have. It's the clutch that wears and only if it slips. Slip is a condition of low line pressure or glazed discs. This isn't like riding a manual clutch burning it up. It is designed to lock or not...minimum wear. Thing is this is not a large clutch and it is single plate...if stock, so large applications of torque can force slip. Thus torque control and traction control. Keep torque below the slip point of an otherwise fully locked up clutch. Under light loads a locked up clutch promotes fuel efficiency and reduces heat. It gets to be an issue under abnormal load. 

 

Good aftermarket converters not only increase stall speed but employ higher friction disc materials. Larger diameter discs and more of them to stay locked up under much higher loads. In an oil bath (ATF) at reasonable temperatures...bullet proof. Circle D, TCI and PATC among the best. 

 

The factory equipment is designed down to the last foot pound, last degree of heat and last pound of pressure to save fuel and limit production cost. Abuse it, and that threshold is LOW, and it will fail. 

 

 

 

  • Replies 57
  • Created
  • Last Reply
Jacoby Enthusiast

Jacoby

Posted
Posted
9 hours ago, Railhead_Ed said:

The other day I was merging onto an interstate. I wanted to place myself between a semi and the car behind him. So I kicked it in the a$$ to get up to speed. This puppy just about went sideways on me!  Granted the road was damp, but not wet. I thought I was gonna roll it! Certainly got my attention. Thing I don't understand is why didn't the traction control kick in? My last truck a 2009 Dodge Laramie 1500 2wd, would have been jumping all over me before I ever got to that point. I am beginning to question my purchase of this thing. Or is my traction control defective? I was in 2 wheel high.

 

Ed

So your TC didn’t fully kick in one time and because of that you’re now questioning your purchase of the truck. Oh lord :shakehead:

KARNUT Senior Enthusiast

KARNUT

Posted
Posted

I rather not have it. Most of the time TC just shuts it down, that would have been fun in the middle of a merge. I trust my right foot more.


Sent from my iPhone using Tapatalk

1SLOW1500 Senior Enthusiast

1SLOW1500

Posted
Posted

As GB stated. The single small clutch slips and wears out. Most tuners band aid this with line pressure and also shift points. As will as demand to shift points. In hopes to have the best locked up stall when the power comes in.
As I said there is much debate over this as others argue of driveability, fuel economy, and the stress on other parts.

I am better when I have a picture as reference. This is my triple "large" stall. First band has 2 friction surface and the 2 band has one. 76aba1c9dc7be8c3d872f1e1e6876b8b.jpg5a932d18652939676fe463f44cc8b6ce.jpg2b8fe054eb74e8ca10fb0ef59d669f63.jpg

Sent from my SM-N960U using Tapatalk

1SLOW1500 Senior Enthusiast

1SLOW1500

Posted
Posted
I rather not have it. Most of the time TC just shuts it down, that would have been fun in the middle of a merge. I trust my right foot more.


Sent from my iPhone using Tapatalk
I agree with the statement. Unfortunately there is no such thing these days. Computer and the million different tables decides what % of throttle you get. Meaning you go 50%, it gives you 30% then at a speed or temp or rpm or gear it just dumps in the other 20%. If you have high power this is a issue.
That is why I laugh when people claim a horsepower level on a stock untuned truck, because they read it in the manual.
Even on the dyno we have to do a pull in a higher gear, max traction,and wot after the roll in. How often are those exact conditions replicated on the streets to have that same number? I say 1-2% of the time and only that few 10ths of a second in the pull.
Also vss can be off with different tire sizes.

Sent from my SM-N960U using Tapatalk

KARNUT Senior Enthusiast

KARNUT

Posted
Posted
I agree with the statement. Unfortunately there is no such thing these days. Computer and the million different tables decides what % of throttle you get. Meaning you go 50%, it gives you 30% then at a speed or temp or rpm or gear it just dumps in the other 20%. If you have high power this is a issue.

That is why I laugh when people claim a horsepower level on a stock untuned truck, because they read it in the manual.

Even on the dyno we have to do a pull in a higher gear, max traction,and wot after the roll in. How often are those exact conditions replicated on the streets to have that same number? I say 1-2% of the time and only that few 10ths of a second in the pull.

Also vss can be off with different tire sizes.

 

Sent from my SM-N960U using Tapatalk

 

That’s why I play with an old truck. When I play on the back roads I no TC isn’t going to put me in a ditch. Nothing more fun than a right foot controlled burn.

 

 

Sent from my iPhone using Tapatalk

SierraHD17 Senior Enthusiast

SierraHD17

Posted
Posted
2 hours ago, Jacoby said:

So your TC didn’t fully kick in one time and because of that you’re now questioning your purchase of the truck. Oh lord :shakehead:

No kidding.... it's this that makes these heaps as little fun to drive stock as possible.  Learn to control your vehicle without relying on aids... what a novel idea.

Railhead_Ed Enthusiast

Railhead_Ed

Posted
  • Author
Posted
2 hours ago, Jacoby said:

So your TC didn’t fully kick in one time and because of that you’re now questioning your purchase of the truck. Oh lord :shakehead:

Wow! This was helpful!

Railhead_Ed Enthusiast

Railhead_Ed

Posted
  • Author
Posted
13 minutes ago, SierraHD17 said:

No kidding.... it's this that makes these heaps as little fun to drive stock as possible.  Learn to control your vehicle without relying on aids... what a novel idea.

Wow! This was helpful too! I've been driving 49 years. I know how to control a vehicle.

Railhead_Ed Enthusiast

Railhead_Ed

Posted
  • Author
Posted
1 hour ago, KARNUT said:

That’s why I play with an old truck. When I play on the back roads I no TC isn’t going to put me in a ditch. Nothing more fun than a right foot controlled burn.

 

 

Sent from my iPhone using Tapatalk

Yeah I get you there. But, I wasn't trying to play with it. I was merging onto an interstate. Chevys are much different than Dodges. I guess I'm still in that getting to know you stage. :-)

Railhead_Ed Enthusiast

Railhead_Ed

Posted
  • Author
Posted
11 hours ago, Snowcamo said:

Mine as well. It'll get sideways real quick on wet roads. Kinda wish i had a way to turn down the throttle % for rainy days.

Sent from my LG-G710 using Tapatalk
 

It sure surprised me! Came around real quick! A more inexperienced driver might have lost it. Just gotta keep my head in the game!

Railhead_Ed Enthusiast

Railhead_Ed

Posted
  • Author
Posted
1 hour ago, KARNUT said:

I rather not have it. Most of the time TC just shuts it down, that would have been fun in the middle of a merge. I trust my right foot more.


Sent from my iPhone using Tapatalk

It seemed to me as though I had no traction control at all. Gonna have to pay attention to my right foot!

Railhead_Ed Enthusiast

Railhead_Ed

Posted
  • Author
Posted
11 hours ago, 1SLOW1500 said:

Temp is your issue. There is a table for traction control based on ect. Seems silly to me but there is. I set mine to 400* and torque to 1000. Still comes on but incandescent rool the tires a few times first.

Sent from my SM-N960U using Tapatalk
 

Is this something you need a tuner for? Or is there somewhere I can change the parameters in the user accessible settings of the truck?

1SLOW1500 Senior Enthusiast

1SLOW1500

Posted
Posted
8 minutes ago, Railhead_Ed said:

Is this something you need a tuner for? Or is there somewhere I can change the parameters in the user accessible settings of the truck?

tuner for can not change the factory control on this.

Jacoby Enthusiast

Jacoby

Posted
Posted
1 hour ago, Railhead_Ed said:

Wow! This was helpful!

I wasnt trying to be helpful. 

 

I was pointing out the absurdity of your comment

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • tararebecca
      2027 GMC Sierra: Official Discussion

      By tararebecca · Posted

      I agree, simplicity and reliability matter more as vehicles get more complicated. A V8 work truck option with fewer electronic features and a stronger warranty would definitely appeal to a lot of buyers who use their trucks for real work. Customizing it with trusted outfitters is often the best way to get exactly what you need.webcrimsNY
    • artistemorbidity
      2026 Sierra 1500 Denali - Sound upgrade?

      By artistemorbidity · Posted

      I’ve heard similar complaints from newer vehicles where the factory “premium” systems don’t always live up to expectations. A good installer should be able to improve the sound without turning it into a bass-heavy setup. I’d look into upgrading the front speakers, adding a quality DSP amplifier, and possibly improving sound deadening first—those changes usually make a much bigger difference than just adding a subwoofer. Hopefully someone local can recommend a reputable installer in the Las Vegas/St. George area.
    • Grumpy Bear
      The Peckish Synapse

      By Grumpy Bear · Posted

      Do you remember that Harley Davidson was more successful (solvent) when it produced about 60% of the market demand (by design) and forced wait times of up to three years? Even when your turn came around it was, "Take what we are giving you or move to the back of the line and start over". HUGE markup's were 'normalized' and dealer killed. 40% markup and no floor plan? What's not to love? Greed will kill them yet. They have surplus production and customer base is tanking. And still they think nosebleed pricing will work.  
    • newdude
      Me too……..

      By newdude · Posted

      The engine was done as part of the 6.2 recall?   You'd have to see if your VIN also has the 6.2 engine special coverage on it.  Coverage number is N252494003.  If you have this, your engine is covered under this and NOT the GM replacement part engine warranty which is 3yr/100k from the date of install.  The 3yr/100k mi warranty is in effect for non warranty purchases.     This is not any different if it was replaced under warranty without a recall or special coverage.  So if you had a 5.3 and it popped at 3 years in at 50,000mi during the 5yr/60k powertrain, the replacement engine would not get the 3yr/100k, and instead gets the remainder of the 5yr/60k as coverage.     So N252494003 gives 10 years or 150,000mi of coverage, which ever comes first, starting at the vehicle in service date.  So if your in service date is 01/01/2022, N252494003 gives you special coverage of the engine until 01/01/2032 or 150,000mi, whichever comes first.  So if your start date was 01/01/2022, you'd have left 5 years and 4 months (lets round to august 1st), or 62,000mi left of coverage.   So you need to know your in service date to know how much coverage is left.  
    • CamGTP
      Injector update

      By CamGTP · Posted

      Okiee dokie there bud, way to take things to the extreme.   I guess you missed the whole point and take things way to serious. I installed different EV6 style injectors that just so happen to be larger in my car running the same LQ4 engine and with a better spray pattern than the stock style injectors and I noticed no difference in the idle quality. Kinda was my round about way of saying that even if you put the same size but better style injectors in your truck, you will likely see the same thing.    I'm sure you're great to have conversations with in person if that's how you act through a keyboard. One little things sets you off and now I guess my dick is all up in your face.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...