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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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#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)
#455 of 851
Re: I've got an appointment... [teamtbo] by nathan118
Aug 21, 2007 (11:47 am)
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Replying to: teamtbo (Aug 21, 2007 11:37 am)

Just talked to the dealer. Apparently "EG7031" is the operation code that they send to Toyota...but the guy confirmed that they did perform the newest TSB, EG036-07.
 
I'll drive it for a few days and see where I'm at.
#456 of 851
Re: I've got an appointment... [nathan118] by joel16
Aug 21, 2007 (12:01 pm)
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Replying to: nathan118 (Aug 21, 2007 11:47 am)

Ah, that clears it up...GREAT!!! I hope it works out for you too. Maybe the Toyota engineers got it right, or at least LESS WRONG.
#457 of 851
Re: I've got an appointment... [nathan118] by rfarke
Aug 21, 2007 (12:25 pm)
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Replying to: nathan118 (Aug 21, 2007 11:08 am)

When I got the EG056-06 done on my Camry last summer, the shop ticket there listed an operation number that was different from the TSB number. I suspect that isn't something to be alarmed about.
#458 of 851
Re: I've got an appointment... [rfarke] by user777
Aug 21, 2007 (6:30 pm)
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Replying to: rfarke (Aug 21, 2007 12:25 pm)

or something they are intentionally doing?
#459 of 851
Re: I've got an appointment... [wwest] by mcdawgg
Aug 21, 2007 (6:44 pm)
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Replying to: wwest (Aug 21, 2007 8:28 am)

This great explanation provides more reasons to get a manual transmission!
#460 of 851
Re: I've got an appointment... [mcdawgg] by joel16
Aug 22, 2007 (3:56 am)
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Replying to: mcdawgg (Aug 21, 2007 6:44 pm)

My service guy told me these types of problems don't occur on the manual transmission version of these cars. He did say all Toyota vehicles will be going drive by wire, as well as Hondas, and other Japanese brands. Two reasons mentioned (a) fuel economy (b) wear and tear on the engine and transmission. I suppose less wear and tear would help the Japanese offer longer warranties (some are fairly short compared to the American and other Asian brands). He didn't mention safety, but others on this forum have (re: upshift before downshift upon throttle lift). I would like to hear if this happens on the Hybrid versions. Anyone know?
#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.

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