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01-14-2011, 09:22 PM
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#1
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Junior Member
Workhorse Chassis Owner
Join Date: Jan 2011
Location: White Oak Lake,Arkansas
Posts: 7
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Allison 1000 hard downshifting
Anyone have a cure for a hard shifting allison 1000 transmission. New(2011) motorhome, 2000 miles. Hard downshifting when coming to a stop. ???
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01-14-2011, 09:33 PM
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#2
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Senior Member
Vintage RV Owners Club Fleetwood Owners Club
Join Date: Dec 2009
Location: CA
Posts: 1,289
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You should take it to the service center and have it checked out and repaired under your warranty. Backyard tricks and additives will probably
void the coverage by the manufacturer.
J
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01-14-2011, 09:42 PM
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#3
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Junior Member
Workhorse Chassis Owner
Join Date: Jan 2011
Location: White Oak Lake,Arkansas
Posts: 7
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You are correct, but wondering if anyone had this problem. really didnt want to do it myself. don't think this is normal but when we test drove it, salesman didnt find it unsual.thanks for reply.
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01-14-2011, 09:51 PM
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#4
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Senior Member
Vintage RV Owners Club Fleetwood Owners Club
Join Date: Dec 2009
Location: CA
Posts: 1,289
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Test drive another coach like yours and compare.
J
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01-15-2011, 12:34 AM
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#5
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: Sep 2007
Posts: 2,976
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Quote:
Originally Posted by jdtsr23
Anyone have a cure for a hard shifting allison 1000 transmission. New(2011) motorhome, 2000 miles. Hard downshifting when coming to a stop. ???
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suggest you do a forum search for hard shifting.
i seem to remember something about a ''learning procedure''. i don't remember how long this takes. if memory serves, disconnecting the battery ground cable for a few??? minutes resets everything and the ally and other things have to go through the learning procedure again.
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01-15-2011, 07:19 AM
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#6
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Senior Member
Join Date: Apr 2008
Location: Freeport, ME
Posts: 4,707
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Have you done any changes to your transmission> Have you just changed the fluid or something. If I drove my previous MH forever with the toad attached then took it off and drove it it would downshif hard until it relearned the way it was driving and adapted.
Read this post and especially what Allisontech wrote
http://www.irv2.com/forums/f125/swit...ing-78396.html
__________________
Mike Canter
"Gunner" USN Retired, Airdale
2004 Monaco Signature 44' Conquest. Detroit 60
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01-15-2011, 10:44 AM
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#7
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Junior Member
Workhorse Chassis Owner
Join Date: Jan 2011
Location: White Oak Lake,Arkansas
Posts: 7
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Havent done anything to it. Just purchased MH and drove it home. 560 miles.
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01-15-2011, 11:07 AM
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#8
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Senior Member
Join Date: Apr 2008
Location: Freeport, ME
Posts: 4,707
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I would take it in to Allison and have it checked and maybe reprogrammed like was talked about in the other post. Do you know if it has Dexron III or Transynd fluid in it or when the filters where changed last?
__________________
Mike Canter
"Gunner" USN Retired, Airdale
2004 Monaco Signature 44' Conquest. Detroit 60
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01-15-2011, 06:43 PM
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#9
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Senior Member
Freightliner Owners Club
Join Date: Apr 2002
Location: Pensacola
Posts: 2,728
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New 2011 should certainly have transynd and no recent fluid change. Other than checking fluid level, I'd run to an Allison shop with warranty in hand.....
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Hooligan, Pensacola, Fl -U.S. Coast Guard 1956-1985
2016 Thor Siesta Sprinter 24ST diesel -1972 Moto Guzzi
2008 Suzuki Grand Vitara TOAD
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01-15-2011, 07:26 PM
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#10
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Senior Member
Join Date: Apr 2008
Location: Freeport, ME
Posts: 4,707
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Sorry, missed the fact that it is a 2011. Yes it has Transynd.
__________________
Mike Canter
"Gunner" USN Retired, Airdale
2004 Monaco Signature 44' Conquest. Detroit 60
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01-15-2011, 09:52 PM
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#11
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Registered User
Vintage RV Owners Club Gulf Streamers Club
Join Date: Oct 2010
Location: Indiana
Posts: 4,951
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I wouldnt touch a 2011 tranny under warranty myself.. take it in.
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01-15-2011, 10:32 PM
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#12
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Senior Member
Workhorse Chassis Owner
Join Date: Oct 2009
Location: crawfordville, florida
Posts: 128
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Does your coach have a "Touch Pad" for gear selection or gear shift lever (manual selector at steering column)?
Two things you can do are:
Discount chassis bat. for 5 mins. Reconnect bat. and drive going thru 5 cycles of upshifting to high gear and 5 times coming to a stop using meduim to light braking. Use light trottle all 5 cycles. The Allison needs to "re-learn". If it was driven hard or manually shifted when slowing down will cause hard shifts. Also did you know you have " the grade braking feature"? The Allison "learns" your braking style and this dictates how and when the "grade braking feature is actatived", IE what rpm, how hard you are appling the brakes, etc.
Check the ground at the trans to chassis to make sure connections are tight. Any loose ground or poor ground will cause your condition as the trans. ECM is very sensitive to the ground side of the ECM.
Also if you have a "Touch Pad" select shifter "you can pull up any fault codes". With ignition sw. on in the run position (engine off) push both of the top two squares (left and right) of the pad at the same time and if you have any "fault codes" they will "flash" in a sequence of "flashes". IE two flashes, a pause, then one flash, a pause, then two flashes, a longer pause, then another set or series of flashes, meaning you have more than one problem. Have a piece of paper handy to record the flash(es) and this would help the Allison Dealer tech. If you do not get any code flashes, Then there is no problem!
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01-16-2011, 04:35 PM
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#13
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Member
Workhorse Chassis Owner
Join Date: Aug 2010
Posts: 64
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This may be the first thing you thought of. If so excuse me.
My sweet little granddaughter activated the grade brake by flipping a toggle switch on the dash.
In this mode the transmission downshifts aggressively if you even touch the brake.
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