Recent Topics
Fram Air Hog - what happened to them?
by copcarguy
04/24/14 04:07 PM
Truck Tool Box
by jims5600
04/24/14 03:15 PM
Broke trans dipstick tube! What to do?
by gfh77665
04/24/14 02:51 PM
Could this be as good as last year?
by John_K
04/24/14 01:47 PM
Road trip to Palo Duro Canyon?
by Benzadmiral
04/24/14 12:42 PM
Pork Brine!
by 123Saab
04/24/14 09:57 AM
Water in Gas
by outoforder
04/24/14 09:12 AM
Valve job pics
by Stelth
04/24/14 09:01 AM
2000 Yamaha V-Star Mobil Delvac 15w40 @ 3000 miles
by outoforder
04/24/14 08:58 AM
Adding SSD to a 6-year-old desktop?
by Quattro Pete
04/24/14 08:37 AM
Laptop hard drive
by Oldmoparguy1
04/24/14 08:11 AM
carquest 5w30 full synthetic
by waltywalt
04/24/14 08:03 AM
Newest Members
Rage2010, FenderGuy53, chevlvr, ashnlopez, venki
49688 Registered Users
Who's Online
88 registered (99Saturn, 440Magnum, 04SE, 2oldtommy, 2012AccentSE, 901Memphis, 12 invisible), 1846 Guests and 177 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
49688 Members
64 Forums
212363 Topics
3329233 Posts

Max Online: 2651 @ 04/21/14 04:38 PM
Donate to BITOG

Page 2 of 2 < 1 2
Topic Options
#3221704 - 12/19/13 01:58 PM Re: Eco - what does it really do? [Re: coopns]
R2d2 Offline


Registered: 12/08/08
Posts: 504
Loc: New York, L.I
Its the rear bank, when it does happen.
_________________________
2014 Acura MDX
2011 Honda Accord V6 coupe

Top
#3221738 - 12/19/13 02:31 PM Re: Eco - what does it really do? [Re: SIXSPEED]
SIXSPEED Offline


Registered: 08/12/10
Posts: 455
Loc: Arizona
Originally Posted By: SIXSPEED

The following linked article from Motor Magazine describes their observations and analysis of VCM operation on a 2012 Pilot. On page 18 they state that the Eco light had no correlation to actual VCM operation and that the Eco light came on when acceleration was not heavy or under a steady load.

http://www.motor.com/article_pdf_download.asp?article_ID=2108


It's interesting that the author of the Motor Magazine article observed a 10% duty cycle on VCM (cylinder deactivation) operation where it was on for 10 seconds and off for 90 seconds. So it appears the cylinders are only deactivated for a small duration at least during their test scenario at a steady load, speed and RPM rather than continuously.


Edited by SIXSPEED (12/19/13 02:33 PM)

Top
#3221766 - 12/19/13 02:52 PM Re: Eco - what does it really do? [Re: willbur]
Hokiefyd Online   content


Registered: 06/24/04
Posts: 10182
Loc: North Carolina
Originally Posted By: willbur
The front cylinders? Are you sure about that? Perhaps I'm wrong but my understanding is that the number three cylinder is the troublesome one and it's on the rear bank on the drivers side. This bank gets all the hot air.


You are probably more familiar with it than I. I had thought it was the front bank. My bad, and thanks for the correction.
_________________________
Cheers, Jason

'08 Honda CR-V
'05 Acura MDX

Top
#3222358 - 12/20/13 07:27 AM Re: Eco - what does it really do? [Re: coopns]
supton Offline


Registered: 11/09/08
Posts: 3730
Loc: NH
I had a rental Rio--Accent?--small Kia of some sort, I4/4spd auto, with an Eco light. I think if I accelerated slow the light would come on; it would seem to upshift faster and was less sensitive to throttle.

Stupid light would go out the moment I hit 70.
_________________________
2004 VW Jetta Wagon, TDI, 5spd manual, 293kmile, his
2011 Toyota Camry, base, 6spd manual, 67k, hers
2010 Toyota Tundra double cab, 4.6L, auto, 82k

Top
#3222389 - 12/20/13 07:55 AM Re: Eco - what does it really do? [Re: Hokiefyd]
Miller88 Online   content


Registered: 04/09/08
Posts: 5338
Loc: Onondaga County
Originally Posted By: Hokiefyd
Originally Posted By: willbur
The front cylinders? Are you sure about that? Perhaps I'm wrong but my understanding is that the number three cylinder is the troublesome one and it's on the rear bank on the drivers side. This bank gets all the hot air.


You are probably more familiar with it than I. I had thought it was the front bank. My bad, and thanks for the correction.


The front bank is the one that sludges up and destroys the camshaft.
_________________________
'11 Focus M1 AFE
'00 Cherokee PYB

Top
#3223002 - 12/20/13 06:31 PM Re: Eco - what does it really do? [Re: coopns]
mclasser Offline


Registered: 04/13/13
Posts: 375
Loc: DC
Originally Posted By: coopns
Honda Ody 12. I don't drive it much (wife does) but when coasting...Eco light comes on. Wife mentions it seems to 'suspend' the engine, she doesn't like the feeling. I just noticed it a bit the other day, could gently feel it.

Does it do something or is it just simply informing us?

Thanks.


My Pilot has the same VCM engine as your car. Some people say the ECO light illuminating isn't always related to the VCM engaging but everytime the light comes on for me, I feel a slight vibration which to me means the VCM is activating.
_________________________
-- 2013 Honda Pilot EX-L 4WD
-- 2002 Honda Accord EX-L SULEV 175k miles: PU 5W20 & Honda A02
-- 2002 Infiniti I35 85K miles: PU 5W30 & P1

Top
#3223100 - 12/20/13 08:00 PM Re: Eco - what does it really do? [Re: mclasser]
Trav Offline


Registered: 11/20/06
Posts: 8493
Loc: MA, Mittelfranken.de
I cant say about the 2012 but every Honda I have worked on with VCM the eco light is directly related to VCM operation, I don't think they changed.
Other makes that use similar eco lights may or may not have VCM it may be just a simple vacuum operated switch.
Higher vacuum turns the light on (eco), lower turns it off.
_________________________
ASE L1, Master. Deutsch Meisterbrief.

Top
#3223102 - 12/20/13 08:03 PM Re: Eco - what does it really do? [Re: Miller88]
willbur Offline


Registered: 06/06/13
Posts: 31
Loc: sw ohio
FRONT BANK AND CAMSHAFT? Please provide your source for this info, or is just your opinion/conjecture? Look up Honda TSB SB-13-078 which addresses the V6 VCM issue and the class action lawsuit and settlement. Honda extends the warranty from 5 to eight years. It's about piston rings and rear bank, not camshaft.

Top
#3228732 - 12/26/13 09:39 PM Re: Eco - what does it really do? [Re: coopns]
wtd Offline


Registered: 06/25/02
Posts: 1141
Loc: southwest Mo.
Back in August I test drove a 2013 Challenger R/T with the 5.7 Hemi that had the Eco display and I could always tell when it went from 8 cyl. mode to 4 cyl mode. I didn't like how it felt and is one of the reasons I didn't buy it. I also test drove a 2010 Camaro SS that had this system but I couldn't tell when it was operating. I ended up buying a Mustang GT without this system. I don't want a vehicle that has it.

Wayne
_________________________
2014 Mustang GT
1998 Chevy K3500
1998 Chevy K1500
(2) 1992 Cavaliers
1970 Monte Carlo

Top
Page 2 of 2 < 1 2