N coast vs 'hold the line on 3cylinders'
Active Enthusiast
Joined: Feb 2005
Posts: 88
From: S. Oklahoma
Re: You should never drive auto tranny in "N"
Originally Posted by gonavy
ok, but who's revving the engine in N and why would one do that? If I were in a '69 Mach 1 at a light and something fast looking pulled up next to me I might consider it, bt otherwise??
one is unintentional engine revs in N coasting (say, a long coast, and forgetting it was in N??? and starting to accelerate while still in N???) and possible damage;
the second is that transmission gears do turn when coasting in N, and that the engine at idle may not pump enough oil to properly lube the gears, especially at higher speeds?
My read, and I don't have any hard tech knowledge to confirm or to deny.
Lewis
Ridiculously Active Enthusiast
Joined: Feb 2004
Posts: 2,567
From: Northern Illinois
Re: N coast vs 'hold the line on 3cylinders'
Hi GoNavy:
___Sorry I did not get back to your earlier …
Reset FCD w/ 2.1 miles total. 52 mph - 28.4 mpg initial when FAS performed at overpass sign just before a high speed off-ramp and coast into a gas station. Final 50.0 mpg.
Reset FCD w/ 2.1 miles total. 54 mph - 29.9 mpg initial when a Neutral coast was performed at overpass sign just before a high speed off-ramp and coast into a gas station. Final 41.2 mpg.
___Good Luck
___Wayne R. Gerdes
___Waynegerdes@earthlink.net
___Sorry I did not get back to your earlier …
Reset FCD w/ 2.1 miles total. 52 mph - 28.4 mpg initial when FAS performed at overpass sign just before a high speed off-ramp and coast into a gas station. Final 50.0 mpg.
Reset FCD w/ 2.1 miles total. 54 mph - 29.9 mpg initial when a Neutral coast was performed at overpass sign just before a high speed off-ramp and coast into a gas station. Final 41.2 mpg.
___Good Luck
___Wayne R. Gerdes
___Waynegerdes@earthlink.net
04 prius 350,000km
Joined: Sep 2005
Posts: 517
Re: You should never drive auto tranny in "N"
Originally Posted by Lewis
As I understand Mitaka's post, he raises two possible problems from N coasting;
one is unintentional engine revs in N coasting (say, a long coast, and forgetting it was in N??? and starting to accelerate while still in N???) and possible damage;
the second is that transmission gears do turn when coasting in N, and that the engine at idle may not pump enough oil to properly lube the gears, especially at higher speeds?
My read, and I don't have any hard tech knowledge to confirm or to deny.
Lewis
one is unintentional engine revs in N coasting (say, a long coast, and forgetting it was in N??? and starting to accelerate while still in N???) and possible damage;
the second is that transmission gears do turn when coasting in N, and that the engine at idle may not pump enough oil to properly lube the gears, especially at higher speeds?
My read, and I don't have any hard tech knowledge to confirm or to deny.
Lewis
replies like that, make me wonder if I should coast in N with an automatic or not....but its there for a reason right? I mean the car developers wouldn't put it there unless they knew it was useful for something... not something that can kill the car!
So abuse it!
Thread
Topic Starter
Forum
Replies
Last Post
Curated Content Editor
Journalism & The Media
0
May 22, 2013 07:00 AM
bar10dah
Fuel Economy & Emissions
9
Aug 15, 2006 11:16 PM
Jason
Website Questions & Input
2
Mar 6, 2005 08:33 PM
