My Taco 3rd Gen Engine keeps dying for 1/2 sec when hitting rev limiter on 2WD,4H,4L

This is how I was hoping that 3rd Gen will perform without

Here's some fun with my 2nd Gen before upgrading 3rd. I was hoping to have the same excitement with my 3rd Gen but with the suggested workaround, It will likely work! Take a look at those videos (I was playing on 4L by the way due to the Air Pressure on 2700 M altitude)

https://youtube.com/shorts/R11piBY97Cs

https://youtube.com/shorts/yJqjD1quVwI

https://youtube.com/shorts/TjWW-fYJOKo

 

Some people just don’t get how fun doing shit like this is lol, especially in a crappy yota real talk tho, glad I could help you out, that rev limiter is a pesky fella

 

Ha! That bum only has 2WD

 

Seriously. OP's truck gonna end up like this when he disables the rev limiter:



Getcha popcorn ready

 

Where in the world is this? Landscape is incredible. For what it's worth, the Valleyrunner tune I run and the tune 3joh22a runs allows us to do this as well- we've both been out in sand dunes/couple feet of snow, so if you can't figure it out that's a route to go.

His engine isn't gonna explode, lol. The 1gr was much less happy with rpms and it never had one of these soft limiters in place, and I haven't ever seen a reported case of one of those over revving to death. He's also not disabling his rev limiter- if you hit limiter for a second in these trucks it cuts 99% of throttle and you slow to a dead stop. In any form of offroad scenario in soft material that requires wheel speed, this is a immediate death sentence. I had this problem in silver lake- ended up sliding backwards down a 100ft dune, because I needed wheel speed to climb the dune, hit the limiter keeping the truck locked in 3rd in 4 low, and it cut all throttle on me. Several other guys who had this limiter tuned out, in the same trucks, climbed the dune no problem. Like I said previously- I have 100k miles and there's guys with 300+k miles who have this throttle cut tuned out, and regularly use limiter to get through mud and slop with no issues.

The 2gr was built as a high revving platform. They can run out to 7300 rpm safely- the Tacoma's limiter is at 6200. You can bounce it off 6200 all you want- as long as you have adequate cooling, it's gonna be totally fine. There's several race series (lotuses) where they use a mildly modified version of this motor, and it sits at 8000rpm happily.


Op clearly knows what he's doing, I don't think he needs people telling him he's gonna blow up his truck when this clearly isn't the case and this feature actually done commonly in most pre canned tunes, most people just never realize it.

 

Toyota: "Off-roading is inherently dangerous. Do not attempt."

 

Also brake boosting the truck?

Straight to jail. Immediately.

 

Thats the nicest way of saying you should learn how to drive

 

I get what you're saying, however those race engines are rebuilt frequently specifically to keep up with the wear and tear of running them as they do, including high RPMS.

It's OP's truck so they can do what they want, but when you come to a public forum asking for advice you're going to get it from all perspectives, not just the confirmation bias that you're looking for. OP has made it seem like they're frequently running into this issue. So if they disable the rev limiter and are constantly going over the limit this cannot be good for the life of the engine, especially with a stock cooling setup.

Just my two cents, whatever that's worth.

 

They aren't disabling the stock rev limiter. They are simply allowing themselves to hit it. If you bounce it off once in the stock truck, it shuts down to idle.

 

Ah you're right. Totally misread that.

Where's my coffee when I need it?

 

All these guys who run YW/OTT tunes are gonna flip a shit when they realize their rev limiter is at 7,000

 

Exactly

 

At least the forward motion stop is temporary when the rev limiter does it. Try sending a rod out the side of the block and see how much longer it stops forward motion.

I quit doing extreme 4-wheeling back in the 1980's. That was before engines even had rev limiters and I've seen more than a couple of engines grenade from over-revving for various reasons. Take a look at my avatar and tell me how much you'd like being in that spot and breaking a rod. Didn't happen to me, or necessarily in that spot, but having your ride out in the middle of BFE and in a spot impossible to tow it when you blow it up is no fun at all.

My biggest fail in my FJ40 was slipping off a rock with one of the front wheels and landing the underside on the oil pan. It had a skid plate but the impact creased the pan and it started a very slight leak I didn't discover until I was driving down the highway going home later. Looked at the oil pressure gauge just about the time it hit zero and funny noises started under the hood. It spun the #2 rod bearing and scarred all the main bearings. I didn't have the money for a rebuild or V8 swap; the Cruiser sat for almost a year and I sold it.

 

I guess. “How to disable rev limiter (vftune)” would have been a better title; there’s also gotta be a relevant tuning thread in this wonderland of TacomaWorld. You can’t expect people not to want to participate if you dump this Q in the Wal Mart of threads.

 

What people aren't understanding in this thread is that he's not trying to disable the rev-limiter. He just wants it to act like a 2nd gen, where when you do hit the rev limiter, it just drops the RPMS back down slightly, and then hits the rev limiter, and bounces down, over and over, keeping it at/near the rev-limiter. What a 3rd gen seems to do is the second you hit the rev-limiter it drops thousands of RPMS, losing all power. The rev limit isn't the problem, it's the sudden cutoff of all power, even when just touching the rev-limiter for a split second.

 

I loved my 2nd gen for that. Not as much fun in the 3rd gen unfortunately..

 

When I was younger, I tried to hit 100mph in my dad's colorado, it hit like 96 or 97 and cut out and dropped like 3 or 4 mph, but then would climb again. Not bad. Tried that in my 1996 chevy 1500 and the second it hit 100 engine power cut and dropped me down to 60 or so in a heartbeat, scared the living crap outta me. I could definitely see a limiter that's as extreme as this being downright dangerous.

 

I know that all Soviet built engines (pretty much copy of Americans) had vacuum rev limiter, connected to carb. I'm talking late 60's to 70'

 

That's basically what the third gen does. You hit the limiter, it bounces once or twice, and then all power is gone. Just drops down to about a thousand rpm. I was going up a large sand dune in Silver Lake, bounce the limiter once or twice because I was just hitting the steepest part, so I wasn't going to upshift, and then it just died because of that soft stupid limiter thing, leaving me stranded in deep sand on a 35° angle. I went home and deleted it that night.