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2007 Toyota Camry Transmission Questions

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

You are in the Toyota Camry Forum. Your Hosts are pat & karens

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


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#445 of 851
Re: Transmission problem! [chuck28] by joel16
Aug 21, 2007 (2:56 am)
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Replying to: chuck28 (Aug 20, 2007 5:58 pm)

Hi chuck28, i have owned cars in the past (one a Honda Accord) that would surge forward slightly when the air con compressor kicked in and out. It may be that the surge is not related at all to the transmission problem. Not sure this should be classified as "normal"; maybe the dealer should check the tach at idle? Anyone else have any suggestions?
#446 of 851
Re: I've got an appointment... [joel16] by camryowner1
Aug 21, 2007 (6:23 am)
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Replying to: joel16 (Aug 20, 2007 4:52 pm)

Hi Joel, Glad to hear that new TSB worked for your Camry. I also had it installed last Friday (8/17) and noticed a nice improvement in the acceleration, but car still shifts too often when in cruise control and encountering even a slight inclined highway (3 times in 1 mile of travel). I would like to know if anyone else has this problem after the new TSB is installed. How about you?
#447 of 851
Re: I've got an appointment... [camryowner1] by wwest
Aug 21, 2007 (8:28 am)
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Replying to: camryowner1 (Aug 21, 2007 6:23 am)

"...shifts too often..."
 
Sorry, you have just arrived in the future...!
 
Both of the vehicles I rented while on vacation this year would shift so often it made me think something was wrong. The first was a 2007 Mazda minivan and I was totally convinced it had some strange transaxle behavior until I rented a 2007 Chrysler Sebring the next week and if anything found it was even worse.
 
These days everthing possible is being done to keep the engine operating within its best FE "sweet spot", the lowest possible RPM at which the engine will just barely produce the level of HP/torque required in the instantaneous, short term, sense.
 
Then throw in the need to have the transaxle ALWAYS upshift upon a lift-throttle event to increase the vehicles safety factor by avoid any substantial level of engine compression braking and you have TOO MANY SHIFTS
 
Take a 6 speed automatic transaxle with a lockup clutch for the torque converter and you essentially now have a 9 "speed" transaxle. To the benefit of improving FE Lockup clutches are now being used, engaged, in gear ratios below OD.
 
Maybe an effort is afoot to try and match the FE that can be attained with some of the new CVT equipped vehciles.
#448 of 851
Re: I've got an appointment... [wwest] by user777
Aug 21, 2007 (8:34 am)
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Replying to: wwest (Aug 21, 2007 8:28 am)

best sweet spot at the expense of the driver and passenger comfort. wonderfully advanced. not.
#449 of 851
Re: I've got an appointment... [user777] by wwest
Aug 21, 2007 (8:40 am)
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Replying to: user777 (Aug 21, 2007 8:34 am)

But I suspect this "too many shifts" thing is something we will/can grow more used to, be forced to grow more used to, as time goes by.
 
Unless we somehow end up with almost all vehicles CVT equipped.
#450 of 851
Re: I've got an appointment... [wwest] by joel16
Aug 21, 2007 (9:53 am)
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Replying to: wwest (Aug 21, 2007 8:28 am)

One of the reasons for the push for FE is the change in the measurement standards for estimated gas mileage. Many (but not all yet) cars are listed on www.fueleconomy.gov for 2008 models, and in some cases the numbers have changed substantially. Toyota vehicles look to be slightly better than the rest of the bunch.
#451 of 851
Re: I've got an appointment... [nathan118] by nathan118
Aug 21, 2007 (11:08 am)
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Replying to: nathan118 (Aug 20, 2007 3:55 pm)

Just brought my car home from the dealer. They weren't near as easy as Joel's dealer. I had the number, but they didn't even want to look at it. I'm a stupid customer, I don't know anything about servicing the car!
 
They made me go on a road test with a service technician. He was nice, and they decided they could look at improving the transmission performance.
 
Two hours later I get the car back, and the operation that was performed is "EG7031." That doesn't look at all like the new TSB Joel is raving about.
 
The ride home was mixed. I'll give it a few days, and if they haven't done this newest TSB, I'll try and take it back, or find a place that will do it when I ask them to.
 
Any thoughts on what the EG7031 is? Thanks guys.
#452 of 851
EG7031? Don't know this TSB by joel16
Aug 21, 2007 (11:28 am)
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Again, just to be clear, I have a 2007 4cyl 5spd automatic XLE Camry.
 
Here's the information from my TSB
Number = EG036-07
 
Title: ECM Calibration: Enhancement to shifting performance & smoothness
 
Note: This TSB supersedes TSB No. EG056-06 (obsolete and should be discarded)
 
Applicable Vehicles: 2007 Model Year Camry vehicles equipped with 2AZ-FE engine
 
Applicable Warranty: This repair is covered under the Toyota Federal Emissions Warranty. This warranty is in effect for 96 months or 80,000 miles, whichever occurs first, from the vehicle's in-service date.
#453 of 851
Re: EG7031? Don't know this TSB [joel16] by nathan118
Aug 21, 2007 (11:31 am)
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Replying to: joel16 (Aug 21, 2007 11:28 am)

Yours is much more detailed than mine. The only other thing I see indicating what was done besides "EG7031" is the description of the correction. It says:
 
"Performed ECU Recalibration to Improve Shift Logic."
#454 of 851
Re: I've got an appointment... [nathan118] by teamtbo
Aug 21, 2007 (11:37 am)
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Replying to: nathan118 (Aug 21, 2007 11:08 am)

Nathan,
 
Hmm, I have a subscription to TundraSolutions.com which lists all the 2007 Camry TSBs. I don't see anything that matches the TSB you mentioned. Could it be brand new? Also, your TSB is missing a number. Here are all of them that start with EG:
 
EG004-07 M.I.L. ON DTC P0011, P0012, OR P0016
EG014-07 M.I.L. ON DTC P0456 (REVISED)
EG015-07 2AZ-FE ENGINE BLOCK
EG018-02 2GR-FE ENGINE OIL LEAK FROM FRONT TIMING COVER
EG018-06 ILSAC GF-4 ENGINE OIL RECOMMENDATION
EG034-07 ENGINE BANK 1 AND BANK 2 A/F AND O2 IDENTIFICATION
EG038-06 2GR-FE (V6) ENGINE OIL LEAK (REVISED)
EG039-06 EXCESSIVE ENGINE NOISE AFTER TRANSAXLE REMOVAL
EG056-06 ECM CALIBRATION: ENHANCEMENT TO SHIFTING PERFORMANCE & SMOOTHNESS (REVISED)

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