mortoma5

Hi everyone, new here! My basic question here is did I hurt my car? I may have accidentally hit my rev limiter while driving my 2018 Civic EXT sedan w/ 6 sp. manual. It's the first turbocharged car I have ever owned and now I think Honda should teach and warn people about the do's and don'ts of driving a turbo if they are novices. I was accelerating down an on ramp to get on an interstate and was up on cam in second gear at about 4000 RPM ( at least ) when I nailed the throttle even more before shifting into 3rd to go really fast. Before I even was able to hit 3rd the car practically stopped in its tracks as if it shut off the fuel injectors or something. I was not looking at the tach when this happened so my estimate of 4000 revs before I nailed the gas pedal is an estimate. Plus I was not looking at the tach when the shutdown occurred either. It all happened so fast. But yep, I think I hit the rev limiter. The car still has less than 7,000 miles on it and still even has the new car smell and all. Did I hurt the engine? I realize I for sure didn't do it any good. Don't want to take it to the dealer or even mention it to them because I'm afraid that might have violated the warranty since it was my bad. So you guys that know more about turbo Civic please chime in and tell me what you think. I feel like I'm a dumbass but I'll take a few jabs, that's ok...

sdaidoji

iTrader: (1)

rev limiter is a limiter.
It is there to stop the engine revving any further by cutting off the fuel, so as to not to damage the engine (yes, this is what the limiter is designed to do).

any real questions?
....
....



The only case it would go really high enough to damage would be to shift to 2nd at 100MPH (car weight will pull the engine to higher RPM)

ezone

No, it's fine. You could mash the gas pedal to the floor and leave it there all day and it wouldn't hurt the engine, the computer controlled rev limiter is designed to prevent the engine from hurting itself.


OTOH if you downshift incorrectly as mentioned above and force the engine rpm far beyond its maximum, that should void warranty coverage on the damage.
FYI the computer can store fault codes related to excessively high engine rpm.

Teaching people how to drive is not the responsibility of the vehicle manufacturer....but Honda is apparently trying to do something along those lines:

http://www.thedrive.com/news/20271/h...to-drive-stick

mortoma5

Wow, very snarky and insulting attitude for a moderator with the "any real questions" stab. A rev limiter is not a perfect thing like any mechanical or electronic system designed to to protect stuff. Probably not a perfect solution to stop any damage at all, just stop complete destruction. The RPM probably could still go to high for a fraction of a second. I thought there were actual expert mechanics that knew more than I did here. That's why I came because I'm not about to tell me dealer about it. I know a little but just wanted to get a more knowledgeable opinion. I realize since I didn't actually see the RPM at the very second it happened that would limit help people could give but that does not mean people should be on the nasty side.

mortoma5

Thanks for at least a more civil reply than the moderator. Obviously a car manufacturer is not going to have any responsibility towards teaching anything. I was not talking about learning to drive a stick, that's all I have driven for more than 30 years. I can drive stick as good as any 18 wheel driver. I was referring to the much higher responsiveness ( apparently ) that a turbo appears to have when it's up on boost and you nail the throttle. I was not expecting it go from about 3000 to 4000 RPM to the red line nearly instantaneously! As a person that's driven Hondas nearly exclusively for 30 years, and manual tranny ones at that, I never had any experience in turbo-charged vehicles because Honda simply has never made one ( at least for the stock vehicle USA market ) until 2016. In an older Hondas like I drove in the past, if I was holding my shift in second or third gear to a high RPM and then nailed it, it would respond but there would never be any real threat it going to go all the way to the red line so quickly!! It would take a while with the cars I was used to driving in the past. That's all I was trying to say. But yeah, I am an expert at manual shifting, just not turbo experience.
BTW, engine codes are a moot point because I can erase those. We have our ways!!

ezone

Now you know it can and will do that!
The more you know about what it's capable of, the better you can control it

Some days I'm the snarky one. Maybe yesterday it was his turn LOL

sdaidoji

iTrader: (1)

duh, ezone is also a moderator
regardless of turbo, cutting the fuel will cause the engine to enter into engine braking mode, and the car momentum is not gonna make engine over rev. Pure physics. Not gonna happen.
If a Corvette does not have problems, i don't see why a civic turbo would have issues with hitting the limiter but still go over revving. Nope, not gonna happen.
Simple as that.

sdaidoji

iTrader: (1)

Also, unless you are in a really steep downhill, the only thing providing acceleration is the fuel.
Cut fuel and voila. No acceleration. No RPM increase.

thus, not gonna happen.

It only happened with carbureted cars because no limiter., aside from rare ignition cut cars.

ducebigalow

Wow, this sounds exactly what happened to me in my 2018 hatch lx manual, 2 months after I got. I was trying to get off fast from a light in 1st, high revs into 2nd, and while attempting to shift from 2nd to 3rd it was like for a split second the car, shut off, but the engine was still on and the car was still moving. It went into 3rd, but just before that transition there was an interruption in power. My buddy that was with me at the time was like "what was that"? I thought maybe the traction control had kicked in because it was winter here (Canada) at the time, even though the roads seemed fine. People on other sites also thought it was the traction control, but it is possible I hit the rev limit too. I also wasn't watching the tach when it happened. I was shitting my pants because I thought the same as you, I ruined my new car. However, I did in fact talk to the dealership told them what happened, they checked the car (computer) and couldn't find anything a miss. The car has been fine since, and yes I have nailed it a few times since. Really if that's all it takes to break a Honda engine, they wouldn't be selling many cars REAL fast. Hope this helps.

xRiCeBoYx

iTrader: (22)

I've redlined my 2018 civic (granted, CVT, but I was in sport paddle shifter mode) and didn't think anything of it. I accidentally money-shifted my 2002 and that legit scared the **** out of me. Gunning it on an on ramp, went from 3rd to 2nd instead of into 4th and the tach went to about 9k+ RPMs, but thankfully no damage noted. Engine was pulled apart probably 30-40k miles later for head gasket change, and no internal damage was found.