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Old 04-20-2011, 09:12 AM   #1
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"Economy" Transmission selection

I have a 2007 Bounder Turbo Diesel (Cat 300). The transmission selector panel has an "economy" option button. When depressed, a small red light illuminates. What else does this button do? Once again, the dealer is absolutely no help except to say "It must be for economy". Thanks.
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Old 04-20-2011, 09:20 AM   #2
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Most of us have found that the most effective thing that button does is turn on that little red light. What it actually does is change the shift points in your transmission... I assume it is an Allison. Shifting at slightly lower RPMs is supposed to improve MPG but I haven't heard anyone claim yet that they notice much difference. Sounds like your dealer is a doozy
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Old 04-20-2011, 09:38 AM   #3
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On our '04 KSDP selecting the economy button will result in less downshifting. A noticeable difference when approaching hills.
You will be required to select economy after every engine start cycle as the Allison will default out of that mode.
I can't say I've noticed any mileage difference either using economy or not as there are too many other variables per tankful.
I avoid economy mode in very hot weather choosing to keep engine RPMs higher for cooling purposes, just my belief.
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Old 04-20-2011, 10:39 AM   #4
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Hi Sssacco, Gotta ask, Sacco is my wifes maiden name? Where are you from?
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Old 04-20-2011, 11:20 AM   #5
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Yep, just as the name suggests. In "economy" mode shift points are changed both upshift and downshift ... you will not accelerate as quickly and will "coast" longer before downshifting. When used with cruise control, normally at highway speeds, you will notice a difference in fuel consumption with little noticeable effect on performance, until you come to a big grade! Manual downshifting might be preferable on steeper grades but try it both ways to see for yourself. We use ours and we see a difference.
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Old 04-20-2011, 11:49 AM   #6
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I have run many trips in economy mode and the same trips with it off,and found NO help with fuel mileage.

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Originally Posted by sssacco View Post
I have a 2007 Bounder Turbo Diesel (Cat 300). The transmission selector panel has an "economy" option button. When depressed, a small red light illuminates. What else does this button do? Once again, the dealer is absolutely no help except to say "It must be for economy". Thanks.
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Old 04-20-2011, 12:00 PM   #7
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I have run many trips in economy mode and the same trips with it off,and found NO help with fuel mileage.
Same here...Got to feed that Cummins.. and everytime I fill up the tank I want to cry...
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Old 04-21-2011, 04:42 AM   #8
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Hi Sssacco, Gotta ask, Sacco is my wifes maiden name? Where are you from?
I'm from Western Mass. Little town called North Adams. Where is she from?
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Old 04-21-2011, 11:50 AM   #9
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Less shifting in rolling hills. I always use it because it does reduce the number of unnecessary shifts. This may not save any fuel, but fewer shifts in the tranny may reduce tranny wear and extended the life of the tranny clutches a mile or two I guess that's economy.
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Old 04-21-2011, 07:33 PM   #10
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I don't like economy mode. She stays in high when it's obvious to the most casual observer that she shoulda downshifted to fifth.
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Old 04-21-2011, 09:20 PM   #11
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Did you ever push the R button rather that the economy button. That will give you a thrill.


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Old 04-21-2011, 10:44 PM   #12
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Did you ever push the R button rather that the economy button. That will give you a thrill.


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If you are at highway speeds, nothing will happen.
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Old 05-04-2011, 09:47 PM   #13
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If you are at highway speeds, nothing will happen.
Clearly you read the op manuall!!!!!
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Old 05-05-2011, 05:43 PM   #14
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Nah! I didn't read the manual I just like to hear the alarm sound.


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