Power cut at 4,000rpm 4WD- Hi - Traction Control off.

Thanks. Lived at this cabin for 16 years. Guess I’ve been doing it wrong

And yes I do need that engine speed to maintain momentum up this grade and to clear the treads. I’ve gone up this hill at 5500rpm in a few sections just cleaning out the treads in other vehicles.

This ain’t Costco this is 150miles in the bush off reserve land. Never been stuck. And never been limited to 4,000 rpm. You just can’t put enough power down like this

 

4LO and 2nd gear

 

My point is the engine physically shouldn't be cutting out like that. The Powerband is 3400-3600 and it should keep turning past that. Not sure why yours stops there.

Mine doesn't.

 

1. He turns off vsc.
2. It stays off until at some point he goes over 35 mph
3. VSC turns back on past 35 mph
4. He slows down for a turn, VSC cuts power.

That's the only thing I can think of.

 

I understand. Just to provide a control to compare it to I was just saying mine doesnt do that.

Isn't there also a roll sensor factored Into the VCS override ? I've deff powers slid a corner (the situation called for the risk) in 4hi over 35mph and experienced no governing

 

There are a few situations where the VSC is not active above 35 mph.
1. You are not applying throttle
2. The vehicle "loses" the Zero Point, meaning the vehicle is sideways, wheels are turning at different RPMs, etc. The vehicle can't "fix" itself if it does not know where it is, meaning sensor wise.
Even with VSC on, you can skid (think snow) and get it out of wack to the point that the VSC sorta gives up until it is going straight again. It's hard but it can be done.

 

Yeah.

In real world the only time I've had VSC cut out on me was ripping some insanely hard drifts on snow in parking lots. Never on the hundreds of miles of snow and mountain back country.

I mean the common speeds are right about there with why sounds to be similar terrain



I was more so wondering if it was a mechacal / computing flaw, just a drivers perspective on how it should drive, or if it's just normal operation for the specific terrain he's on.

Just trying to get more than he was going fast in mud at 4k and then it stopped turning for him. Seems odd. I'm sure the peeps in here can help him. See a lot of familiar names who know their stuff, yourself Included

 

I tried VSC off and Trac off via long hold of the TC button, past the point that auto LSD light goes off...on dry pavement, (this should be all nannies disengaged) if I do a WOT 5500rpm 1-2 shift in 2wd on dry pavement I also get a complete power cut until I take my foot fully off the throttle and re-engage.

Seems wonky. And when these power cuts hit, its like the brakes are on (I beleive they are).

 

^Is that, VSC & TRAC OFF via a quick button push, which also engages AUTO-LSD? Or the, come to a complete stop, hold TRAC-OFF button until the warning lights come on w/out AUTO-LSD? Because that second one is the mode that truly turns off VSC

 

Thats the way it is in the late model 2nd gens. An absolute must for deep snow driving

 

An absolute must for getting sideways

 

Updated what I posted, basically following what I have read/been told I should have all the nannies and aunties disabled.

 

Interesting. Well, you can always pull the ABS fuse! That'll shut her up! (I was seriously considering rigging an on/off switch in the fuse circuit for the brake brain on my ex wife's focus, so as to be able to shut off the stability control and drift around via e-brake (would've set an absurd amount of can network codes, but the dash lights would go away immediately upon turning back on))

I wonder if it's some sort of torque management

 

Yep weird part is i'm just trying to use my truck as a truck to haul firewood to my cabin, no claims of being an offroader or an Broverlander and the truck is struggling, but we have throusands of posts about suspension mods and tire threads and prinsu racks i'm just curious how everyone else is getting places or if my '16 has some kind of bug.

I've found only 1-2 other threads where people are saying the electronics still kick in, and many people suggesting 4-low for muddy conditions which is whacked.

 

I've never had any issues myself, but my primary wheeling is all recreational on trails or in the dunes so I'm in 4lo or 2hi. The only time I'm in 4hi is if the snow decides to hammer and I need to get to work. 6mt here, no issues with lack of power up top yet.

 

Yeah that's why I find it so odd. We drive the heck out of this truck 12 months a year and have no issues like that, so not sure what's going on with it.

 

Ao i just hit that 4k limit myself on some ice in the fully off, hold down trac-off mode.

It was /after/ i hit the 6k rpm limiter and kept it there, it knocked itself down to 4k and stayed there. I’m guessing it drops the rpms in an effort to prevent damage. Are you hitting the 6k rev limiter prior to it limiting you to 4k?

 

Wouldn’t say I’m hitting the limiter but exceeding 4,000 for sure then getting knocked back down with the power cut

 

Yupp my 2017 automatic 100% does this too. With all traction stability and everything properly turned off. I have posted on this before. When drifting or doing donuts it won’t just let you rev to the limiter, or even very high in the RPMS at all while spinning the wheels. It literally CUTS the power and it won’t let you

 

It’s almost like a governor type feeling. You hit it and it shuts the power down for maybe just 1 second but it is enough to completely kill all of your momentum AND fun