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SUVs Toyota RAV4 Toyota RAV4 2006
4658 messages, Last post on Nov 06, 2009 at 4:59 AM
You are in the Toyota RAV4 Forum. Your Hosts are steve_ & tidester
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Replying to: jbollt (Jun 18, 2007 9:52 am) 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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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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Replying to: mtwebster (Aug 02, 2007 3:28 pm) Hope that helps. It does solve the acceleration lag, so it's a computer software issue.
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Replying to: mark19 (Aug 02, 2007 7:00 pm) 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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Replying to: ateixeira (Aug 03, 2007 6:44 am) |
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Replying to: cbmorton (Aug 06, 2007 3:15 pm) 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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Replying to: cbmorton (Aug 06, 2007 3:15 pm) http://www.siennaclub.org/forum/index.php?showtopic=15867&st=0&#entry122284 |
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Replying to: cbmorton (Aug 06, 2007 3:15 pm) The ACIS is realized by using a bulkhead to divide the intake manifold into 2 stages, with an intake air control valve in the bulkhead being opened and closed to vary the effective length of the intake manifold in accordance with the engine speed and throttle valve opening angle. This increases the power output in all ranges from low to high speed. • When the intake control valve closes: While the engine is running at medium speed under high load, the ECM controls the actuator to close the control valve. As a result, the effective length of the intake manifold is lengthened and the intake efficiency, in the medium speed range, is improved due to the dynamic effect of the intake air, thereby increasing power output. • When the intake control valve opens: Under any condition except when the engine is running at medium speed under high load, the ECM controls the actuator to open the control valve. When the control valve is open, the effective length of the intake air chamber is shortened and peak intake efficiency is shifted to the low to high engine speed range, thus providing greater output at low to high engine speeds.
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Replying to: cbmorton (Aug 07, 2007 7:23 am) I dunno, my V6 was quick before, quick now, no hesitation before or after. My mileage did improve but it was breaking in and that might have happened anyway. For people reporting hesitation, though, it's something worth considering, IMO, if their engine has a similar intake. |
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