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2007 Toyota Camry

5336 messages,  Last post on Jan 12, 2013 at 7:18 PM

You are in the Toyota Camry Forum.

What is this discussion about? Toyota Camry, Sedan

    

Messages Page 529 of 534

#5281 of 5336 Posts moved to a more helpful discussion by pat

Dec 30, 2009 (10:21 pm)

Here's the link: rajatarora, "2007 Toyota Camry Problems and Repairs" #4957, 27 Dec 2009 7:18 pm.

#5282 of 5336 2007 Camry XLE V6 12/31/09 4th Tranny BLOWS by comus

Jan 02, 2010 (1:02 pm)

This will be my fourth Transmission and 2nd 2007 Toyota XLE Camry V6. The first one was replaced by Toyota under LEMON LAW. I have taken the car back to where I purchased it , Carmax, Laurel, MD. I just had the car towed there on a roll back, Happy New Year. SO NO THE PROBLEM ON THE TRANSMISSIONS ARE NOT FIXED. Toyota Corporate told me it was FIXED. Right now, Toyota has left me with NO CAR. I make my living driving.

#5283 of 5336 Re: 2007 Camry XLE V6 12/31/09 4th Tranny BLOWS [comus] by gtgtcobra

Jan 02, 2010 (1:23 pm)

Replying to: comus (Jan 02, 2010 1:02 pm)
Why are the Camry transmissions on the 2007-2009 Camry vehicles going bad? Aren't all the transmissions and engines that they put in the Camry all made in Japan?

#5284 of 5336 Re: 2007 Camry XLE V6 12/31/09 4th Tranny BLOWS [gtgtcobra] by mcdawgg

Jan 02, 2010 (2:08 pm)

Replying to: gtgtcobra (Jan 02, 2010 1:23 pm)
Engines are made in USA, trannys - automatic I don't know, manual are made in Japan. The V6 automatic transmissions I'd be concerned about. Your I4 will be fine.

#5285 of 5336 Re: 2007 Camry XLE V6 12/31/09 4th Tranny BLOWS [gtgtcobra] by wwest

Jan 02, 2010 (3:40 pm)

Replying to: gtgtcobra (Jan 02, 2010 1:23 pm)
Two reasons.
 
In favor of reduced weight (FE and ATF cost) the ATF sump volume has been minimized. Therefore the "FILL" level is VERY critical, an 1/8th of a qt too much and you get frothing due to gear splash once the ATF has warmed. 1/8th too little and the upper range gear shifts are not reliable when the ATF is cold.
 
Newer models have a SEALED transaxle and BOLD caution notes in the factory service manuals.
 
The second reason, possibly the primary failure cause, is the result of a design flaw inadvertently introduced during the design of the RX300's more robust, vs the Camry "model" transaxle. The new ATF line pressure control system, "real-time" line pressure control, cannot support two sequential gear changes in quick succession. Lift the gas pedal for a short period coastdown and then quickly reapply pressure to the gas pedal and with DBW you will likely experience a 1-2 second downshift delay before the engine will be allowed to produce enough torque for your desired level of (re-)acceleration.
 
Ford solved the problem by adopting a variable displacement ATF pressure pump. Porsche has followed suit, sorta, with a variable displacement engine oil lubricating pump.
 
High volume flow even with the engine at idle but with the ability to reduce the pump displacement and maintain constant flow/pressure, no pressure relief valve needed, as engine RPM rises. Why no one has ever thought to do that with the power stearing pump is beyond me.

#5286 of 5336 Re: 2007 Camry XLE V6 12/31/09 4th Tranny BLOWS [gtgtcobra] by comus

Jan 02, 2010 (4:06 pm)

Replying to: gtgtcobra (Jan 02, 2010 1:23 pm)
Let me give you a short story of the long story. The transmissions in the V6 Camry XLE are made in Japan. They are sealed transmissions, with strict orders from Japan, that, No Dealer, has the ability to repair, add oil or can any way tamper with this sealed transmission. From what I understand, there is no fix for the problem, the only remedy is to replace it with another of the same. From what I understand, the problem is, the V6 has too much Torque (power) for the transmission. And, is somewhat tangled up into the TRACTION CONTROL, which may erupt the Transmission Devestation. This problem is, catastrophic specific, to the V6 Camrys or any other Vehicle having that specific V6 and 6 Speed Automatic transmission, the new version transmission to the year 2007 for Toyota. Plenty of Power, but buyer beware.

#5287 of 5336 Re: 2007 Camry XLE V6 12/31/09 4th Tranny BLOWS [comus] by wwest

Jan 02, 2010 (5:26 pm)

Replying to: comus (Jan 02, 2010 4:06 pm)
"..sealed.."
 
This may actually have been done to protect the consumer. Way too many dealers were selling ATF drain and refill, or complete flushes, when the factory had no such requirement. Besides which not many dealer service personel would be careful enough not to overfill the transaxle.
 
"..V6 has too much torque.."
 
No very likely to be the problem as ALL of these vehicles have DBW and the engine ECU control firmware could easily be used to detune/derate the engine and improve FE in the process. I understand this is already being done in low gear ranges with many FWD and F/awd vehicles in order to reduce the instances of loss of directional control.
 
"...Traction Control..."
 
The instances of TC activation would seem to be far too rare for TC to have any real effect on transaxle failures. Besides which TC activation also IMMEDIATELY drops the engine torque to virtually ZERO.

#5288 of 5336 Re: 2007 Camry XLE V6 12/31/09 4th Tranny BLOWS [wwest] by comus

Jan 02, 2010 (6:16 pm)

Replying to: wwest (Jan 02, 2010 5:26 pm)
Thanks for the post, ref: Transaction Control, on the first new Camry, here is what happened, it had rained, the tires spun, the following messages showed on dash, CHECK VSC SYSTEM, CHECK ENGINE LIGHT, TRANSACTION LIGHT. Called the dealer, drove it direct to dealer, TRANNY OUT, Lemon Law kicks in, car sold at auction with 300, that is 300 miles on it. Toyota builds me a new car.
Yesterdays instance was the same, it snowed, transaction control engaged, and the lights came on. Now it all remains to be seen.

Messages Page 529 of 534

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