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Sedans Toyota Camry 2009 Toyota Camry
914 messages, Last post on Dec 05, 2009 at 3:45 PM
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My educated guess is that you are (or at least your transmission is) "lugging" your engine in an attempt to live up to its EPA gas mileage claims. Check your tach to be sure. When you hear the vibrations, I'll bet your engine is turning about 1300 to 1500 RPM. This used to be considered a "fast idle"; now it's what mfg's strive for as an engine "cruising" speed. It's VERY tough on 4 cylinders to achieve this since they are inherently less smooth to begin with, compared to engines with more cylinders to "round off" the bumps of the compression/firing strokes. Drive in 4th when around town and you'll notice all this "commotion" will all but disappear. (and your throttle response will be better if/when you need it). Just don't forget to put her back in "over-D-rive" when you get out on the highway and "up to speed" so that you DO get that great MPG! Cheers, Scotty
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Replying to: atb2 (Dec 06, 2008 5:58 pm) |
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Replying to: waltchan (Dec 05, 2008 5:23 pm) 
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Replying to: wwest (Dec 07, 2008 8:57 am) |
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Replying to: dmathews3 (Dec 07, 2008 12:28 pm) |
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Replying to: wwest (Dec 07, 2008 8:57 am)
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Replying to: exler (Dec 08, 2008 2:08 pm) |
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Replying to: notmybmw (Dec 07, 2008 9:08 am) |
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Replying to: exler (Dec 09, 2008 8:19 am) I've noticed my BMW does this all by itself (downshifts to 4th or even 3rd when it detects a drop in roadspeed, even though you are neither accelerating nor deccelerating.....is that a word?.......slowing down!) but I've learned to accept that the Camry just won't do a few things that the twice-as-expensive 325i will. (Like automatically aim the passenger side outside mirror down toward the curb when reversing...in order to prevent tire scuffing!!....then return to normal when put into Drive or Neutral.) Trust those Krauts! The Japanese could do it, I'm sure.....probably DO on some upscale models....but you gotta limit the frills somewhere on a $20K family sedan. So, in a nutshell.....accept the technical limitations of the Toyota transmission engineering team.......and have fun doing some shifting for them!!! Cheers. Scotty
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Replying to: notmybmw (Dec 09, 2008 8:41 am) Right on the mark IMHO. My '09 I4 auto has some of the same trans symptoms/behavior as mentioned throughout this forum. Although the shifting is not perfect, I remind myself to look at the whole picture (car, in this instance) and in that light, the car is superior to most others in the $$ range. I thought about getting the TSB loaded; here's my thought: since I've worked with/on computers for many years, I would hesitate modifying the factory software load. These issues were supposedly corrected in previous MY's and, once the TSB is applied, there's no going back. "NOTE: Software version 3.00.021 or later is required." and "Recalibrate ECM (PCM) Engine & Transmission" as stated in the TSB instructions. Careful what you wish for, it might not live up to what you're expecting. My car now has 4k miles. While pondering whether to have the TSB done, I decided to replace the factory air filter with a $19.99 Purolator from Pep Boys. That was about a thousand miles ago and I am convinced it acts more normal now and runs/shifts better. Could I be dreaming? Maybe, but don't think so and I feel better knowing the ECM (PCM) hasn't been plugged into by a tech that may or may not be experienced in this area. |
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