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Old 05-21-2014, 08:21 AM   #1
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Switched to transynd, shift problems, now what?

I switched to transoid. Now driving on interstates I get hard shifts, but in on the blue ridge parkway hills its shifting late and hard. any ideas what the problem may be? PS I have a 3000 series MH trans coupled to an ISC 330
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Old 05-21-2014, 10:20 AM   #2
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Hard shifts, usually worst on down shifts, is normal after filter, oil or both has been replaced. This may take a couple of hundred miles to work all the air out
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Old 05-21-2014, 11:35 AM   #3
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Thanks

I have a appointment Fri, at Penn Diesel to check it out. They think it could need to be reset. and be put on fast adapt. I sure hope it's something simple the last trans problem I had I needed a new computer $$$

John
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Old 05-21-2014, 05:38 PM   #4
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I had my fluid and filters changed yesterday. At first, I experienced a couple of harsh shifts. Three hundred miles later, it's working great.
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Old 05-21-2014, 09:11 PM   #5
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Quote:
Originally Posted by Koop View Post
I had my fluid and filters changed yesterday. At first, I experienced a couple of harsh shifts. Three hundred miles later, it's working great.

Same or similar for mine.
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Old 05-22-2014, 02:38 AM   #6
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When you get your filters and oil changed ask them to Reset Fast Adaptive.
Then take it for a good drive with lots of gear changes so the ECU can make any corrections to the shifts because the new oil flows different to the old oil.
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Old 05-22-2014, 03:58 AM   #7
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Does not hurt to try.....

Quote:
Originally Posted by johnboy2 View Post
I switched to transoid. Now driving on interstates I get hard shifts, but in on the blue ridge parkway hills its shifting late and hard. any ideas what the problem may be? PS I have a 3000 series MH trans coupled to an ISC 330
Information starting on page 32 http://www.rvtechlibrary.com/transmi..._operators.pdf
Might give it a try, and save your self some cash.....
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Old 05-22-2014, 07:54 AM   #8
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Visit or call your local Allison repair shop & have them hook their computer to the trans controller & do a reset....worked wonders for mine!!!!!
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Old 08-25-2014, 10:52 PM   #9
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Check your oil level using the touch pad.
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Old 08-26-2014, 04:54 AM   #10
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The original poster seems to have gone MIA. For others now reading the thread I would only add that problems such as he described can be attributed to a variety of different issues but most generally are related to the Throttle Position Sensor (TPS). There is no way to accurately determine the TPS readings unless hooked up the Allison DOC program. This can show the TPS counts and ranges - and of course, force the ECU into fast adapt.
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Old 10-04-2014, 01:02 PM   #11
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Not missing just traveling where AT&T don't work. Turns out Florida Detroit Allison didn't put all the oil back in in fact they missed by over a gallon. Oh we'll my son warned me not to use FDA.
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