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Honda Accord VCM

2183 messages,  Last post on Nov 26, 2009 at 9:02 AM

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What is this discussion about? Honda Accord, Transmission, Sedan


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#41 of 2183
Re: 08 Accord VCM ? [mcpdjohn] by hpowders
Nov 04, 2007 (6:33 pm)
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Replying to: mcpdjohn (Nov 04, 2007 5:35 pm)

I don't believe one can check out the VCM adequately with a salesman riding along distracting you with his non-stop talking.
 
Feedback from people who have lived with the vehicle for a while would be more revealing, IMO.
#42 of 2183
Re: 2008 Honda VCM v6. [redturboboy] by robertsmx
Nov 04, 2007 (8:03 pm)
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Replying to: redturboboy (Nov 04, 2007 4:54 pm)

To give a you bit of background first, Honda introduced VCM in 2002 in Japanese version of American Accord (they call it Inspire in Japan). This version was also used in Accord Hybrid, 2005-2007 Odyssey (top two trims) and 2WD Pilot. This version switched between 6-cylinder (V6) and 3-cylinder (I-3) modes depending on need. The problem discovered over time was that I-3 would be insufficient at moderate to high speeds, and the vehicle would end up running on all six cylinders anyway, even when they all weren't needed. So, the benefit was relatively small.
 
With the new Accord, Honda introduced second generation VCM. This version added yet another mode. Now, the engine is able to operate in 6 or 4 or 3 cylinder modes depending on need. This is also the new system in 2008 Odyssey. Pilot still has the old system, but with redesign that is about to happen, its 2WD version is likely to get this new system.
 
During idling, low speed/low engine load driving conditions, only 3-cylinders are producing power (all cylinders are "fired" but only three cylinder are being fed gasoline and air as the valves on other cylinders remain shut... the pistons still move in all of them). This is the "I-3" mode.
 
Accelerating from a stop, accelerating with moderate to heavy throttle and while climbing relatively steep hills, all six cylinders are fed gasoline and air, and fired. This is the V6 mode.
 
During moderate/high speed cruising, mild hills, only four cylinders provide power. This is the V4 mode (two cylinders from each bank are selected).
#43 of 2183
Re: 08 Accord VCM ? [hpowders] by golfrski
Nov 05, 2007 (4:13 pm)
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Replying to: hpowders (Nov 04, 2007 2:30 pm)

heee thats funny. I have a silver one with Black leather, added the deck lid spoiler on it, i think it squares off the trunk lid making it look better and a bit taller. its awesome. i also added thsi cool under dash blue footwell ambient lighting that honda offers. gives it a cool glow at night that matches other task lighting. You'll dig it for sure.
#44 of 2183
Re: 2008 Honda VCM v6. [robertsmx] by golfrski
Nov 05, 2007 (4:14 pm)
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Replying to: robertsmx (Nov 04, 2007 8:03 pm)

awesome explanation robertsmx. Helpful to better understand the process, Thank you.
#45 of 2183
Re: 08 Accord VCM ? [hpowders] by golfrski
Nov 05, 2007 (4:16 pm)
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Replying to: hpowders (Nov 04, 2007 6:33 pm)

ditto!
#46 of 2183
Re: 08 Accord VCM ? [mcpdjohn] by golfrski
Nov 05, 2007 (4:21 pm)
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Replying to: mcpdjohn (Nov 04, 2007 5:35 pm)

Glad you are not experiencing this. Totally agree that everyone should drive it, fully test it, take it on the open road/ highway and decide. After 5 accords I feel it all the time. As did the shop manager and service manager at the dealer not only on mine but 2 others. I am sure over time though I will probably get used to it... Time will tell. Still an awesome car overall.
#47 of 2183
Re: 08 Accord VCM ? [golfrski] by grandlakegar
Nov 05, 2007 (4:47 pm)
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Replying to: golfrski (Nov 05, 2007 4:21 pm)

My wifes EXL-V6 has 2000 miles on it now. I've driven it at different highway speeds trying to feel any change when the ECO light cycles on and off and I don't detect a thing. The mileage is not quite as good as her 04 and there are several de-contenting items I don't like but the VCM is not an issue on her car.
#48 of 2183
Re: 08 Accord VCM ? [grandlakegar] by golfrski
Nov 05, 2007 (5:27 pm)
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Replying to: grandlakegar (Nov 05, 2007 4:47 pm)

cool... maybe I will have mine checked out AGAIN! we saw it on a few other v6's so mine was consistent we all found. interesting..Thanks for the post!
#49 of 2183
I don't want no VCM ! by blufz1
Nov 05, 2007 (9:06 pm)
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Well excuse,me...!!! But,if Honda had to build special motor motor mounts to reduce the engine vibration when running in 3 or 4 cylinder mode, then I don't want it!!
#50 of 2183
Re: I don't want no VCM ! [blufz1] by ezshift5
Nov 06, 2007 (2:21 am)
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Replying to: blufz1 (Nov 05, 2007 9:06 pm)

.....for moi, it's not that I don't want it - - - (for those of us who prefer - or are able - to shift for ourselves)....
 
...no VCM is provided for the 6M.
 
VCM remains (at least to me) of real interest within the Honda sphere of fuel efficiency addressal. Keep those (VCM) cards and letters coming. I'm looking for a VCM six to break the 40 mpg barrier (after break-in of course)
 
..ah, the agony of choice!
 
..best, ez....

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