- #4602 of 4666
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Re: Octane rating...V6 2006 RAV 4 [leeharvey418]
by desertguy
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Jun 18, 2007 (3:43 am)
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Replying to: leeharvey418 (Jun 17, 2007 6:07 pm)
The Rav4 comes with the new efficient diesel engine in the rest of the world already so I don't understand your statement. I think it could be easily modified (if needed) to pass US specifications. Toyota just doesn't think there is a sufficient market for it at this time. Things will change.
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- #4603 of 4666
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Re: Octane rating...V6 2006 RAV 4 [desertguy]
by leeharvey418
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Jun 18, 2007 (9:40 am)
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Replying to: desertguy (Jun 18, 2007 3:43 am)
It may be efficient, but I doubt that it's clean. Countries outside North America understand that accepting a diesel engine's shortcomings is necessary to reap its primary benefit- much greater distance traveled per barrel of crude oil extracted.
Besides, even if the compression-ignition engine could pass 50 state certification, it wouldn't change the fact that the RAV4 was never designed to accept a hybrid drivetrain.
Don't get me wrong- if there were a clean hybrid diesel vehicle on the market, especially one with the utility of the RAV4, I would be the first in line to buy it. The problem is that there aren't enough of us for Toyota or anyone else to invest the resources necessary to bring it to market.
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- #4604 of 4666
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Re: Octane rating...V6 2006 RAV 4 [leeharvey418]
by jbollt
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Jun 18, 2007 (9:52 am)
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Replying to: leeharvey418 (Jun 18, 2007 9:40 am)
"...the RAV4 was never designed to accept a hybrid drivetrain"
Sorry to step in here, but I doubt the 2001-2007 Highlanders were orignaly designed to accept a Hybrid drivetrain either, yet as we all know, there is a Highlander Hybrid. Unless I totaly missed your point.
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- #4605 of 4666
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Re: Octane rating...V6 2006 RAV 4 [jbollt]
by leeharvey418
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Jun 18, 2007 (10:16 am)
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Replying to: jbollt (Jun 18, 2007 9:52 am)
There's "can we make it fit?" and there's "should we design it so that it will fit?". Toyota obviously had the chance to design in hybrid compatibility to the third generation RAV4 from the beginning, but they chose not to.
I'll grant you that "hybrid" probably wasn't high on the priority list of more than a couple of product planners when the original HL was designed, but if they hadn't intended any adaptability in the engine bay, then why was it originally designed with enough space for the eventual V6 and hybrid powertrains?
Regardless, as I understand it, the packaging issue that precludes a RAV4 hybrid is actually battery space, not the engine bay.
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- #4606 of 4666
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2006 4cyl Acceleration Issues - still an issue?
by mtwebster
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Aug 02, 2007 (3:28 pm)
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I haven't been to this forum in a number of months, and short of paging through a mountain of posts, does anyone know if there has been anything further done regarding the acceleration lag that these vehicles are prone to (at least mine still is) - when I voiced my original concern to my dealer, I was told this 'choking' was intentional to prevent wear on the drivetrain before the oils and lubricants were up to full operating temperatures.
I'm wondering if this is still the 'official' word on this issue?
Thanks
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- #4607 of 4666
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Re: 2006 4cyl Acceleration Issues - still an issue? [mtwebster]
by mark19
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Aug 02, 2007 (7:00 pm)
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Replying to: mtwebster (Aug 02, 2007 3:28 pm)
A friend of mine has that acceleration lag. They found a TSB (service bulletin) for the transmission, and yes it fixed this lag. Even though the TSB was for the transmission if you read the bulletin it went on to describe the engine and emissions system. Nice way of Toyota to hide that they were really masking the emissions of the 4 cyl engine through the engine computer slowing the rate of fuel to the engine, and the lag! Don't let the tsb title fool you, it'll say transmission but it's really for the engine computer as well. Also my friend's fuel economy increased about 3-4mpg as well. They do have the 4cyl engine (rav4 fwd, 2006) I will have to search for the tsb number or ask them if they still have a copy of it if you need a number. A dealer should be able to find this for you as well, but sounds like your dealer is just making up excuses which is a joke! Might want to find yourself a dealer who doesn't lie to you.
Hope that helps. It does solve the acceleration lag, so it's a computer software issue.
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- #4608 of 4666
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Re: 2006 4cyl Acceleration Issues - still an issue? [mark19]
by ateixeira
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Aug 03, 2007 (6:44 am)
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Replying to: mark19 (Aug 02, 2007 7:00 pm)
I wonder if it's a bypass in the vacuum lines, like you can do with the V6s in the Sienna (both 3.3l and 3.5l). I'm sure the mod would work on a V6 RAV4, too.
Details here:
http://www.angelfire.com/ky3/gabby/intake_mod.htm
Disclaimer: my 3.5l V6 Sienna wasn't hesitating, but I did this anyway, and my mileage has improved.
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- #4609 of 4666
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Re: 2006 4cyl Acceleration Issues - still an issue? [ateixeira]
by cbmorton
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Aug 06, 2007 (3:15 pm)
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Replying to: ateixeira (Aug 03, 2007 6:44 am)
Any hint on how this mod can be done on the 2GR-FE, the underhood configuration being somewhat different than as shown in the pictures at that site? I'm loath to start disconnecting vacuum hoses without being sure I'm doing it to the right ones. I'm not having issues with my engine either but I'm always interested in better mileage.
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- #4610 of 4666
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Re: 2006 4cyl Acceleration Issues - still an issue? [cbmorton]
by mark19
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Aug 06, 2007 (6:02 pm)
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Replying to: cbmorton (Aug 06, 2007 3:15 pm)
didn't you read my message? i didn't mention anything about disconnecting vacuum lines, and there is only one anyway it's for the emissions systems. So I don't see how disconnecting anything for the emissions system is going to help your fuel economy. Most likely it'll hurt your engine in the long term.
the update I was mentioning was not for the v-6 but for the 4cyl. And yes updating the software inside the computer (ecu, brain) will definitely help fuel economy.
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