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2007 Toyota Camry Transmission Questions

851 messages,  Last post on Nov 01, 2009 at 2:21 PM

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What is this discussion about? Toyota Camry, Transmission, Sedan


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#461 of 851
Re: I've got an appointment... [joel16] by mcdawgg
Aug 22, 2007 (8:13 am)
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Replying to: joel16 (Aug 22, 2007 3:56 am)

My service guy told me these types of problems don't occur on the manual transmission version of these cars.
 
True, I have a '07 Camry with a manual transmission.
#462 of 851
Re: I've got an appointment... [mcdawgg] by wwest
Aug 22, 2007 (10:24 am)
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Replying to: mcdawgg (Aug 22, 2007 8:13 am)

Yes, but if you have a manual transaxle it is presumed that:
 
1. You know to use the clutch INSTANTLY if your seat of the pants sensor indicates that the current level of engine compression is excessive for roadbed conditions.
 
2. You know, absolutely, not to downshift to a level that will result in loss of control due to excessive engine compression braking REGARDLESS of roadbed conditions.
 
3. You might shift down into 1st gear before coming to a full and complete stop but you do not engage the clutch unless you are certain of roadbed traction conditions.
 
4. You know that unlike a RWD or R/AWD w/stick shift you cannot use engine compression as "drag-braking" (braking only at the rear) to moderately brake the vehicle while simultaneously helping to maintain the vehicle's alignment with the roadbed or desired direction of travel.
 
That being said...
 
You may notice that fewer and fewer FWD and F/AWD vehicles are being made available in the marketplace, the RAV4 for instance. Apparently the industry feels that not everybody purchasing a FWD or F/AWD stick shift knows these RULES.
 
Additionally some of the FWD and F/AWD vehicles that do still have a stick shift have control firmware that will automatically UP-REV the engine to closely match roadspeed if the ECU determines that your downshift would result in an extraordinary level of engine compression braking.
 
Looks as if the new Suzuki SX4 stick shift uses that technique.
#463 of 851
Re: I've got an appointment... [wwest] by joel16
Aug 22, 2007 (11:28 am)
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Replying to: wwest (Aug 22, 2007 10:24 am)

I've read some material that said the similar/same firmware that is in automatics with manual shift mode (either at the stick, or shift paddles on steering wheel)is somehow incorporated in (what some call) a "straight drive" (aka stick shift). Good thing most of us didn't know the danger we were in 20-30 years ago with stick shift, or automatic, front drivers. I had a 1978 stickshift Honda Accord when they first came out and got into a fender bender on ice when I downshifted going around a corner. Now THAT car was fun to drive--a shapely tin can on wheels, weighed almost nothing, smaller than today's civic.
#464 of 851
No dice here on new TSB.... by nathan118
Aug 22, 2007 (11:47 am)
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Let me preface this post with the fact that I'm weird when it comes to cars. I get car sick easily, very, easily.
 
New TSB on the Camry still isn't cutting it. I think it's a little better, but still making me sick. At this point I'm looking to replace it. But that's not why I'm posting.
 
Without going too off-topic, in the last two days I've driven the following cars.
 
'07 Camry
'07 Civic
'07 Altima
 
I can say that all three drive almost identically. The CVT in the Altima is nice, but there is a problem with all of them. When I press the gas and brakes, I feel disconnected from the car. Whether it's drive by wire stuff, or something else (I'm sure wwest can shed some light on this). Then I've driven two other cars:
 
'01 Jetta (My wife's car)
'07 Jetta
 
These two cars drive identical, and COMPLETELY different from the previous three. When I press the gas, it goes, and it all feels so natural. Are the Volkswagens really made that diffently, because it feels like a completely different system. The Camry, Civic, Altima, all feel the same.
 
So that's where I'm at. Off to look at some Jettas! I love this forum.
#465 of 851
Re: No dice here on new TSB.... [nathan118] by wwest
Aug 22, 2007 (12:17 pm)
Reply

Replying to: nathan118 (Aug 22, 2007 11:47 am)

Just now before I responded I Googled for:
 
Volkswagon hesitation
 
(Volkswagon, wrong spelling but that's the way I googled.)
 
Interesting, VERY interesting....
 
I suggest you do the same.
 
Up until just now I have been comfortable with my belief that this engine/transaxle delay/hesitation issue had to do ONLY with FWD and F/AWD vehicles. The first google hit as a result of the above search has made me begin to think otherwise.
 
But I suppose inadvertent (SURPRISE!) wheelslip due to engine compression braking at the rear can be just as detrimental as in the front in certain circumstances. Say for inexperienced drivers that tend to freeze up when something life threatening unexpectedly occurs. But I still content that this occurance is less threatening on the rear wheels since you still have traction at the front for maintaining directional control.
 
So maybe it has to do with the evolution of the firmware design of ALL automatic transmissions(***). The goal seems to be to make them act more like one would use a stick shift and clutch.
 
What was that Clint Eastwood fighter pilot movie awhile back wherein the airplane's "ECU" could read the pilot's mind?
 
Maybe that's where all this is headed. Just to avoid a clutch pedal....??
 
*** Or maybe not.
 
The Touareg can be in 4X4 mode wherein 50% of engine compression braking effects will be at the front wheels making it potentially just as unsafe as a FWD.
#466 of 851
Re: No dice here on new TSB.... [nathan118] by wwest
Aug 22, 2007 (12:25 pm)
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Replying to: nathan118 (Aug 22, 2007 11:47 am)

Let me say that I "feel" for you there.
 
I don't often feel the effects of my RX300's strange upshifting technique but rarely I do get that slightly queasy feeling in my stomach. Oftentimes if I think back I can usually attribute it to just having experienced a circumstance wherein the RX unexpectedly upshifts.
 
Sort of like that "here and quickly gone" momentarily out of control experience as you fly a light airplane through a slight/short up or down draft.
#467 of 851
Wheel slip can be bad front or back end by joel16
Aug 22, 2007 (12:33 pm)
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I see all too many people driving around here with tires that really should be replaced. They either have too little tread, or are too low profile compared to what is standard or recommended for the car. But, on average, I agree that it is, at least for me, easier to control a rear drive in a slip versus a front driver. I've driven plenty of both (rentals) and the rear drivers seem better, especially without traction control.
#468 of 851
Traded in my Camry for a Jetta by nathan118
Aug 23, 2007 (4:18 pm)
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Finally traded in the Camry and bought a new jetta, and I love it. Forget the supposed Toyota quality, I love the way the jetta drives, and finally feel like a huge weight has been lifted off my shoulders.
 
For all future Camry buyers, don't take my bad experience as a condemnation of the Camry, because I'm not exactly normal. What I recommend is driving a LOT of cars to see how they drive. For me, the Jetta felt completely different than most of the asian cars on the market, and for me that was a good thing. Everyone is different though, so go out and drive cars for yourself, and don't assume that a car will be good just because of the name on the back.
 
Good luck to everybody!
#469 of 851
Re: Traded in my Camry for a Jetta [nathan118] by teamtbo
Aug 23, 2007 (5:22 pm)
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Replying to: nathan118 (Aug 23, 2007 4:18 pm)

Nathan, glad to hear that you are happy with your new car! That is what matters. I am looking into trading in my 2007 Camry once I get the Title from the credit union. I think your advice for everyone is awesome. I wish I had done that before buying my Camry just because of the name on the back.
#470 of 851
Re: I've got an appointment... [joel16] by Canc
Aug 24, 2007 (4:52 pm)
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Replying to: joel16 (Aug 22, 2007 3:56 am)

I had a Prius before my Camry, and I never had any hesitations like this.

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