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Sedans Toyota Avalon Toyota Avalon 2005-
14778 messages, Last post on Nov 25, 2009 at 4:53 PM
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Have been following the Camry sites for continuing updates on the 5 and 6 speed trannies. Complaints, much like what have been appearing here, on both. There is now a TSB on the 6 speed regarding an upshift RPM spike. Involves an internal valve replacement. What is somewhat interesting reading is the reprogramming/relearning steps required as part of the repair procedures - TSB #TC008-06 dated August 2. This in addition to some snap ring problems on earlier Camry 6 speeds. The '07 is still with the 'old' 5 speed (apparently) - which may be fortunate for those of you that have one coming in.
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Replying to: captain2 (Aug 09, 2006 8:43 am)
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Replying to: ctl (Aug 09, 2006 2:43 pm) Detroit has a bunch of engines that are, by almost any definition, technologically inferior and inefficient - relative to HP,(3.8 GM, DT Ford, for example) yet they are about as reliable as anything out there. In these cases, old must be better? IMO, the assumption that new=good is wrong more often than it is right. The point of the post, though, is to get those who has some transmission issues to read those procedures outlined in the TSB - it may help in some way with reprogramming/reteaching these imperfect control systems. Another case where new does not equal better - don't ever remember anybody complaining about the 'old' 4 speeds. |
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Replying to: captain2 (Aug 10, 2006 5:17 am)
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Replying to: niteone (Aug 10, 2006 5:47 am)
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Replying to: niteone (Aug 10, 2006 5:47 am)
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Replying to: captain2 (Aug 10, 2006 6:10 am) To a programmer, or say an engineer writing the specification for the engine/transaxle ECU firmware, lifting the accelerator abruptly and all the way would/might "imply" a wish to coastdown to a lower speed. In that circumstance remaining in the current gear would seem most appropriate. The above sequence may even be used to set the stage for a downshift if subsequently the brakes are applied. On the other hand if you simply "feathered" the pedal to a shallower position that, seemingly, would/might imply a wish to enter cruising "mode", and an upshift would likely be more appropriate. Back in the fifties when automatics first began to appear we soon learned that if we wished the transmission (no transaxles back then) to upshift sooner all we had to do was slightly lift the accelerator pedal momentarily. So those of you experiencing this problem might want to practice completely closing the throttle until, if, you subsequently reach the point/decision, to accelerate. Keep in mind that applying your foot higher on the pedal, which seems to have helped in some cases, would require more force and therefore lifting the pedal would likely both be more "abrupt" and a shorter travel distance. Just guessing, again. |
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Replying to: captain2 (Aug 10, 2006 6:02 am) why don't we have a Toyota rep in this forum? I mean, did the Toyota rep just stumble upon that forum and joined? I think not. I mean we payed some good money for our Avalon's, why don't we have the same access to that Toyota rep the 07 Camry's have? And, why are they sorta ignoring our problem with the transmissions, but not ignoring the 07 Camry's problems?
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Replying to: niteone (Aug 10, 2006 7:15 am) The Avalon 5 speed - no mechanical failures TMK although certainly a number of folks out there that don't like the way it operates.
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