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Honda Accord VCM

2179 messages,  Last post on Nov 19, 2009 at 8:41 AM

You are in the Honda Accord Forum. Your Hosts are pat & karens

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


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#2100 of 2179
Re: VCM - Torque Converter by elliott2
Apr 26, 2009 (2:04 pm)
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Replying to: jhinsc (Apr 26, 2009 6:59 am)

mmack90 - thank you for your honest opinion. I happen to share it and believe that Honda's engineering prowess is a thing of the past. If a car is designed so that you're watching whether the ECO light is on or off in order to get better gas mileage, the car represents a danger of distraction to the driver for very little economic benefit as the car gets less gas mileage than the previous, smooth running generation of Honda engines.
#2101 of 2179
Re: VCM - Torque Converter [elliott2] by thegraduate
Apr 26, 2009 (3:12 pm)
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Replying to: elliott2 (Apr 26, 2009 2:04 pm)

If a car is designed so that you're watching whether the ECO light is on or off in order to get better gas mileage, the car represents a danger of distraction to the driver
 
Then by all means get every hybrid off the road. You're driving for max economy in those, too. Take a look at the offerings below. Which seems most distracting? How about the ever-changing bar graphs on the mighty screen in the middle of the Altima's dash? Or perhaps you prefer the cartoons to be right there next to your speedo, as in the Camry and Fusion? You decide.
 
By the way, for those who can't quite make it out, the ECO light in the Accord is the dim thing just below the 8 in the tachometer, not the bright green thing between the gauges (that's the D indicator). Face it, the Accord is one of the LEAST distracting models out there.
 
Camry

 
Fusion

 
Altima

 
Accord
#2102 of 2179
Re: VCM - Torque Converter [jhinsc] by mrmack90
Apr 28, 2009 (2:47 pm)
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Replying to: jhinsc (Apr 26, 2009 6:59 am)

jhinsc,
 
Believe it or (and despite other comments about constantly looking for the ECO light), I actually don't have a problem with it... not do I pay much attention to it. My primary issue is with breaking. I've found that while simply coasting with no pressure applied to the gas pedal because I know I have a turn or a stop coming up there is a very noticeable "downshift feeling" almost an instant drag in the car the actually lurches you forward a bit. In addition, I also experience this when applying the break with even pressure to come to a complete stop. I've noticed that if I break more aggressively and more at the last minute, I don't sense the "dragging". However, driving conservatively, applying the break with plenty of lead time, you get the noticeably drag... almost consistently between 3rd and 2nd on the downshift.
 
Quite frankly, upon sensing a break, the system should either disengage ECO until the system senses acceleration or lock the ECO distribution (regardless of the number of cylinders in use) so that you have a smooth breaking situation.
 
I've never experienced this issue with the Honda Pilots that contained the same technology in the 2007 models.
#2103 of 2179
Re: VCM - Torque Converter [mrmack90] by jhinsc
Apr 28, 2009 (6:02 pm)
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Replying to: mrmack90 (Apr 28, 2009 2:47 pm)

mrmack90,
What you are describing has nothing to do with VCM or torque converter. It is the Grade-logic software of the transmission. It will hold the current gear going up or down hills to maintain speed. It will also downshift when slowing down as you described.
#2104 of 2179
Re: VCM - Torque Converter [mrmack90] by dpmeersman
Apr 29, 2009 (1:29 am)
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Replying to: mrmack90 (Apr 28, 2009 2:47 pm)

As noted by jhinsc, I believe it is the Grade Logic that you are experiencing. I feel it working but In use on my particular vehicle it seems to work smoothly as I only experience engine braking as one would if you shifted from 3rd to 2nd in a manual transmission. In this sense I feel it is one of the more intelligent and best implemented auto transmissions I've ever owned.
#2105 of 2179
Re: VCM - Torque Converter [thegraduate] by cstiles
Apr 29, 2009 (7:52 pm)
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Replying to: thegraduate (Apr 26, 2009 3:12 pm)

Hey Graduate--another stellar post (with photos) from you, as usual. This VCM discussion thread is my all time favorite on Edmunds...I come back every few weeks to be entertained.
 
It will be interesting to see if Honda continues to invest in this technology. Most of their models with six pot engines (Accord, Pilot, Odyssey) include VCM, yet none of the Acuras offer it. The TL, MDX, and V6 TSX eschew VCM, and it does not appear that the upcoming ZDX will have it. Will the next generation RL offer VCM? Will any Acura model include it? Sure doesn't look like it right now.
 
And as far as I can tell, VCM is offered in Australia, but not in most overseas markets, including Europe. But Honda's answer to fuel economy in Europe is to offer diesel powerplants.
 
I personally am not against VCM, although the complexity and frustrations created for a small minority of Accord owners may ultimately trump its MPG benefits. And you have to wonder---if Honda truly believes in this technology, why do they not make it available on their upscale Acura line?
#2106 of 2179
Re: VCM - Torque Converter [dpmeersman] by mrmack90
Apr 30, 2009 (12:46 pm)
Reply

Replying to: dpmeersman (Apr 29, 2009 1:29 am)

So, is the Grade Logic something that can be adjusted/updated? Your experiences may be different than mine, but my car seems to have a more noticable (downshift) pull to it than I would like. When traveling in heavy traffic or along streets with many stoplights, the sensation can almost make one nautious. At times, it's almost as if I'm applying increased pressure suddenly on the brakes when I am not.
 
I welcome anyone's thoughts, as it's driving me nuts!
#2107 of 2179
Re: VCM - Torque Converter [thegraduate] by elliott2
Apr 30, 2009 (4:12 pm)
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Replying to: thegraduate (Apr 26, 2009 3:12 pm)

By the way, for those who can't quite make it out, the ECO light in the Accord is the dim thing just below the 8 in the tachometer, not the bright green thing between the gauges (that's the D indicator). Face it, the Accord is one of the LEAST distracting models out there.
 
It's amazing how using a smaller scale for the Honda makes the other offerings look so much larger. So, how long have you worked for Honda?
#2108 of 2179
Re: VCM - Torque Converter [elliott2] by thegraduate
Apr 30, 2009 (4:25 pm)
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Replying to: elliott2 (Apr 30, 2009 4:12 pm)

It's the first pic that I found when I googled; no need to be snide. Below is yet another photo, showing the smaller-font, dimmer than the PRND321 or Odometer, ECO light.
 
I'll pass on responding to the personally-directed comments. Others should follow suit. My sincere apologies, it appears the Fusion's picture wasn't the same size as the others either.
 
#2109 of 2179
Re: VCM - Torque Converter [mrmack90] by jhinsc
Apr 30, 2009 (4:25 pm)
Reply

Replying to: mrmack90 (Apr 30, 2009 12:46 pm)

mrmack90, Grade Logic has been on all Honda's and Acura's since the mid-90's at least. It can be a little disconcerting and weird at first, but you do get used to it. Once you become accustomed to it, your driving style will anticipate it without thinking. Now when I drive a non-Honda vehicle, I find I have to adjust to not having Grade Logic, meaning I have brake differently in stop/go traffic or when approaching a stop light.

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