Last post on Dec 06, 2013 at 1:02 PM
You are in the Toyota Avalon
What is this discussion about?
Toyota Avalon, Sedan
#12065 of 14965 Re: TWO QUESTIONS FOR AVALON OWNERS [captain2]
Apr 17, 2006 (9:20 am)
Hey Captain: The transmission may not be "defective" in terms of "malfunctioning" but it is ill-fitting for the purpose. Considering the number of complaints Toyota has had about this - and there are considerably more complaints in the V6 Camry implementation, one would think that Toyota would change the functionality to one that is more "normal" in operation, and more similar in behavior to the unintrusive units offered by the competition.
Then again, I don't know why Toyota has let this matter persist since they introduced the 5 speed in 2002. The research I have done shows complaints about the transmission/hesitation issues going back to when they first introduced the 5-speed into the 2002 Camry and Lexus ES300. The previous 4-speed was a model of smoothness.
Like you, I think the 6-speed will be busier and more difficult to manange than the 5-speed and the 8-speed on the new Lexus 460 must be an absolute nightmare. CST - a new acronym perhaps - Continuously Shifting Transmission
Interestingly, Nissan/Infiniti is moving toward CVT's as opposed to more gears with greater complexity, although I can't say I am a fan of CVT's either.
If a glove has 4 fingers, it may not be defective, but as designed, it doesn't fulfill it's purpose!
#12068 of 14965 Folks
Apr 17, 2006 (10:09 am)
Some personally directed comments and subsequent responses have been removed. Let's just keep comments focused on the subject and not each other. If you see a post you feel is out of line, please email the host for assistance instead of responding. Thanks.
#12070 of 14965 Re: TWO QUESTIONS FOR AVALON OWNERS [alan_s]
Apr 17, 2006 (10:36 am)
Two weeks ago, you confirmed yourself that the transmission in your Avalon is not defective. You discoved a defect in the offset of your gas pedal, that you fixed, and cured your transmission misbehaviors.
Please re-read your own message #11901 that you posted for us on April 4 to tell us that you had "discovered that in the (your) Avalon there is a "dead spot" from accelerator idle-position to on-throttle, so an inherent time-delay exists every time the pedal is depressed when fully off."
You capped your message #11901 with a key finding:
"I fabricated a piece of plastic of appropriate thickness that when installed in the correct position in the accelerator housing upwards of the pedal shaft, I slightly changed the "off-throttle" or home position of the gas pedal to be just below the point at where RPM's increase (just below off-idle), essentially taking up the initial dead-spot or slack, and simulating a partly on-throttle condition to be signalled to the computer, without raising the idle RPM's.
I have been driving the Avalon like this for 4 days now and have found that the hesitation has all but disappeared. There is no hesitation "off the mark" - the engine responds immediately to on-throttle, and when lifting off the accelerator and reapplying during traffic, the transmission remains in the current gear because the ECU “thinks” the foot is still on throttle (or shifts DOWN if braking) and simply picks up when the throttle is reapplied. THERE IS NO GEAR HUNTING, NO MORE "SLIPPING" AND NO MORE HESITATION! "
alan_s, your transmission is not defective! And the Avalon transmission has not been reported to share the serious transmission/hesitation issues of the 5-speed that the 2002 Camry and Lexus ES300. It is misleading to "lump" the 2005-6 Avalon 5-speed with the earlier 5-speed transmission.
Pick your battles... such as how to fix rattles.
#12071 of 14965 Re: TWO QUESTIONS FOR AVALON OWNERS [havalongavalon]
Apr 17, 2006 (10:53 am)
True, however what I omitted to convey to you all, is that recently the ECU started to compensate for the changed gas pedal position, and gradually reverted to it's previous strange behavior and "hesitation". Very frustrating.
I disconnected the battery for 15 minutes over the weekend and the transmission is now less erratic, so something or the other is being reset to factory default which changes over time.
I really don't know what the "issue" is - transmission, throttle sensors, etc, but the "system" has some anomalies that adversely affect the driveability of the car.
All I know is that my Avalon becomes almost undriveable after a period of time with spontaneous surges, changes and hesitation episodes which make it very difficult to control in bumper to bumper traffic. My wife refuses to drive it in traffic.
I am pursuing this with Toyota, however as this is obviously a sensitive issue for some people, I shall refrain from posting further information on the subject.
#12072 of 14965 Re: TWO QUESTIONS FOR AVALON OWNERS [alan_s]
Apr 17, 2006 (10:57 am)
Please feel free to post whatever information you find out and whatever experiences you have.
The posts that beat up on people who report negative experiences are going to stop - or if they don't stop, they are going to continue to be removed.
This is the place to share what happens, and I encourage you to do just that. Just as I hope everyone else will continue to share their experiences - positive or negative - with the Avalon. That's what we're here for.
#12073 of 14965 Re: TWO QUESTIONS FOR AVALON OWNERS [alan_s]
Apr 17, 2006 (11:08 am)
Thank you for this update. I fully understand your frustration, you have certainly encountered and endured an extraordinary number of problems and have put a lot of effort in trying to figure out causes and possible fixes. As complicated as car control systems are nowadays, and since your car is under warranty, I would leave it to Toyota to fix it. If your transmission misbehaviors are as flagrant as you describe them, there is no way their service people could ignore or dismiss them. And if they cannot fix your car, then they should replace it with a new one.
Best of luck,
#12074 of 14965 To all
Apr 17, 2006 (11:09 am)
Everyone needs to understand that everyone's experience with a vehicle is unique. Because someone has a different experience with the same vehicle you own than you have had does not make that other person wrong.
And everyone also needs to understand that all are VERY WELCOME to post experiences here and that everyone should be free to post whatever has been his or her experience without being peppered with "no that didn't happen, you are wrong" comments.
If you want to post a contrasting experience that you have had with the car, certainly that is fine. If you want to tell someone else what he/she has or has not experienced or what he/she should or should not be posting, that is most definitely NOT fine.
We really need to get this straight; it's gone on for way too long. If anyone has any questions or comments, please feel free to email me. I'll be glad to discuss it further off-line.
But meanwhile, everyone here is on notice that comments that have anything to do with telling other posters how to behave, post, what they did or did not experience, are not going to be tolerated.
Now, please, let's get back to talking about the car.
Thank you for your cooperation.