Coasting to a stop in higher gear - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

subiestyle · 02-28-2014, 03:26 PM

So I'm still in break-in period, so my question is in that context.

When I slow down to a stop, I keep the car in whatever gear I was running in and use brakes to stop and then when revs get to about 1500 and I'm down to about 10mph or so, I step on clutch and stop.

Is this lugging the engine?

I'm using no throttle during the coast, and if I need to accelerate again for whatever reason, I always shift to the right gear before giving throttle.

FReSh · 02-28-2014, 03:51 PM

Sounds fine to me. I wouldn't worry about it. If you're not on the throttle and the engine is above idle, it shouldn't be firing the cylinders anyway.

stugray · 02-28-2014, 04:20 PM

Quote:

Originally Posted by FReSh

Sounds fine to me. I wouldn't worry about it. If you're not on the throttle and the engine is above idle, it shouldn't be firing the cylinders anyway.

Actually if you allow the engine to brake the car, it is not providing any gas, so the cylinders are not firing.
If you take it out of gear and coast, the ECU will provide fuel to keep the engine from dieing.

FReSh · 02-28-2014, 04:39 PM

Quote:

Originally Posted by stugray

Actually if you allow the engine to brake the car, it is not providing any gas, so the cylinders are not firing.
If you take it out of gear and coast, the ECU will provide fuel to keep the engine from dieing.

right... if you take it out of gear the engine will drop down to idle, then it will start firing to keep it running at idle. Until it drops down to idle, I would imagine that it's not firing (though I can't say that with 100% certainty).

kiichiro · 02-28-2014, 04:48 PM

Drive like us stole it, that's my break in

wheelhaus · 02-28-2014, 05:21 PM

No, as long as the gear isn't pulling the engine RPM below idle, you're fine.

I would personally recommend learning how to rev match and downshift properly, but only if you're interested (btw it's fun). This is not just for performance driving, but could help if you need to scoot out of the way of danger, being in a gear/rpm that can actually move you quickly (instead of 6th gear at 1000 rpm, where you'd just lug the engine to death and not accelerate).

chas3wba0 · 02-28-2014, 05:31 PM

lugging only happens when you try to apply throttle at low RPMs. Coasting until right before idling/stalling RPM's is fine, if not recommended

02-28-2014, 03:26 PM	#1
subiestyle Senior Member Join Date: Feb 2014 Drives: 2014 Monogram FR-S White MT Location: San Francisco Posts: 433 Thanks: 62 Thanked 106 Times in 68 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Coasting to a stop in higher gear So I'm still in break-in period, so my question is in that context. When I slow down to a stop, I keep the car in whatever gear I was running in and use brakes to stop and then when revs get to about 1500 and I'm down to about 10mph or so, I step on clutch and stop. Is this lugging the engine? I'm using no throttle during the coast, and if I need to accelerate again for whatever reason, I always shift to the right gear before giving throttle.

02-28-2014, 03:51 PM	#2
FReSh Dirt Trackin' Join Date: Oct 2012 Drives: '13 Raven FR-S MT Location: Rockville, MD Posts: 294 Thanks: 67 Thanked 114 Times in 75 Posts Mentioned: 1 Post(s) Tagged: 1 Thread(s)	Sounds fine to me. I wouldn't worry about it. If you're not on the throttle and the engine is above idle, it shouldn't be firing the cylinders anyway. __________________ My Car Journal

02-28-2014, 04:48 PM	#5
kiichiro corolla specs/GTR looks Join Date: May 2013 Drives: ooh oooh pretty tail lights Location: slower than a accord V6 Posts: 490 Thanks: 229 Thanked 113 Times in 79 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Drive like us stole it, that's my break in __________________ SOLD THEM BOTH Hers: 2007 987S Mine: 2012 991S That was fun, thanks Hachi

02-28-2014, 05:31 PM	#7
chas3wba0 Senior Member Join Date: Jul 2013 Drives: Yes Location: Bay Area, CA Posts: 1,052 Thanks: 1,629 Thanked 813 Times in 407 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	lugging only happens when you try to apply throttle at low RPMs. Coasting until right before idling/stalling RPM's is fine, if not recommended __________________ "If thy pleaſure be in Underſteere, thou art Weird." - Distraxi

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02-28-2014, 05:21 PM	#6
wheelhaus Join Date: Jul 2012 Drives: 2013 BRZ, 2020 KTM Super Duke 1290R Location: Denver Posts: 1,788 Thanks: 714 Thanked 1,141 Times in 624 Posts Mentioned: 49 Post(s) Tagged: 1 Thread(s)	No, as long as the gear isn't pulling the engine RPM below idle, you're fine. I would personally recommend learning how to rev match and downshift properly, but only if you're interested (btw it's fun). This is not just for performance driving, but could help if you need to scoot out of the way of danger, being in a gear/rpm that can actually move you quickly (instead of 6th gear at 1000 rpm, where you'd just lug the engine to death and not accelerate).

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