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Old 07-10-2012, 06:23 PM   #1
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"Mode" button on transmission panel

Anyone know what the mode button is about? I've heard it improves mileage and I've also heard it's for towing to increase the RPM's for towing. Anyone the real answer?
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Old 07-10-2012, 06:34 PM   #2
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The mode button selects either normal or economy mode. In normal mode, shift points allow higher RPM before shifting, in economy mode, the transmission up shifts earlier, and when going up a grade, the transmission will only downshift to 5th where in normal mode it may go to 4th, this is to keep the engine in its max torque range. Acceleration is better in normal mode, but Allison suggests that economy mode be used at all times. According to an allison rep, the original normal mode was defaulted to economy, but RV dealers didn't like the lack of acceleration, so Allison changed the setting.

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Old 07-10-2012, 07:23 PM   #3
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+1 for what Dennis says. You can also do a search for "economy mode" in iRV2. Here's a good link for a detailed discussion

Question about Economy Mode
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Old 07-10-2012, 07:29 PM   #4
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Quote:
Originally Posted by DennisZ View Post
Allison suggests that economy mode be used at all times. According to an allison rep, the original normal mode was defaulted to economy, but RV dealers didn't like the lack of acceleration, so Allison changed the setting.

Dennis
That's good stuff. I did not know that.

I've used the economy mode less than 1% of the 44K miles on our coach because.... well, I don't know.

I wasn't crazy about the reduced acceleration I guess. We're about to hit the road on a 7000 mile, four month trip and I think I'm going to finally give it an honest try and see if there's any "economy" to be gained.

Thanks

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Old 07-10-2012, 07:37 PM   #5
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I call the mode button the " switch into 6th gear when I want it to button"

In normal mode the tranny tends to sit in 5th for lengthy periods or until we go down hill, but in economy mode it drops to 6th gear quite promptly at 60 mph.
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Old 07-10-2012, 07:59 PM   #6
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Also useful to keep the trans from upshifting and downshifting (hunting) when going up and down smaller hills.
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Old 07-10-2012, 08:45 PM   #7
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I use the "economy" mode, except in steep climbs/steep hills. On flatter ground, it has been worth 1-2 mpg. Like was said before, it shifts up faster, and delays shifts down, stays in 6th longer.
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Old 07-10-2012, 08:54 PM   #8
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I was told by Spartan that the only difference between the 2 modes is in climbing hills. You'll notice no difference in the flat lands. But climbing hills in Economy mode will hold your gear longer and not downshift too quick.
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Old 07-10-2012, 10:30 PM   #9
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I was told by Spartan that the only difference between the 2 modes is in climbing hills. You'll notice no difference in the flat lands. But climbing hills in Economy mode will hold your gear longer and not downshift too quick.
Spartan was wrong.
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Old 07-11-2012, 07:10 AM   #10
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One thing I've found on ours is when in the Economy mode the downshifts get really harsh from 5th to 4 th and especially 4th to 3rd. When I say harsh I mean sometimes it will really jar the coach. I quit using economy mode and the shifts are normal.
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Old 07-11-2012, 07:34 AM   #11
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So assuming the default is the engine starts in normal mode you need to switch to economy at startup?
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Old 07-11-2012, 08:40 AM   #12
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I usually hit the mode button at start up but often forget and end up hitting the button at 60 mph when the tranny is hanging in 5th gear, it then drops to 6 th and all is well.
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Old 07-16-2012, 08:26 PM   #13
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Can an Entegra owner verify that to activate "Economy" mode you must press the mode button and see the red LED llight on? I was playing with this today while making a 6 hour drive and noticed minimal difference in RPMs in either setting... Apparently the system defaults to "normal" mode from what I've read...

Thanks.
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Old 07-16-2012, 08:48 PM   #14
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Yes, the tranny default is normal mode. I experimented with economy mode for a year or so and decided it wasn't worth messing with ...in rolling hills it tended to lug the engine down and slow me down much more ...did not seem beneficial, and I noted no fuel savings.
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