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Old 06-02-2014, 07:52 PM   #1
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Allison 3060 help please

Hello! I have a1998 Monaco diplomat with 35000 mile it has a Allison 3060 tranny. My problem is sometimes when I start it up the check trans light comes on and when it does it will not go into any gear. If I turn off the engine and restart it the light goes out and it will be ok . Sometimes while driving it will come on and I have to pull over shut the engine off and restart for the check engine light to go off? Help please!
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Old 06-02-2014, 08:32 PM   #2
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Check fluid, then go to an Allison shop to have it diagnosed.
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Old 06-02-2014, 09:26 PM   #3
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Make sure to check all your battery connections. I have read of other RV owners have this same problem and it turned out the battery connections were the problem.
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Old 06-03-2014, 02:08 AM   #4
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Use the shifter to get the logged fault codes from the ECU.
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Old 06-04-2014, 07:13 AM   #5
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I had s similar problem on mine. Freightliner said it was a bad ecu. If I remember right it was $2500 to replace.
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Old 06-04-2014, 07:19 AM   #6
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Sounds like the Allison ECU is going.
You need to call these Guy's >Transmission Instruments <
They helped me out over 10 yrs ago.
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Old 06-04-2014, 07:32 AM   #7
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If you're in or near Florida, try Transdiesel.net in Orlando, they diagnosed and replaced my TCU in an hour for under $1000. They sourced a used TCU for me, to keep costs down.

Todd
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Old 06-05-2014, 02:03 AM   #8
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Have you tried to get the codes out of the ECU yet?
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Old 06-06-2014, 01:26 PM   #9
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I do not know how to get the codes from the tranny?
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Old 06-06-2014, 01:59 PM   #10
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Quote:
Originally Posted by Ohorn View Post
I do not know how to get the codes from the tranny?
Sounds like you need a manual:

http://truckroadservice.com/barth_attachments/virus.pdf

If this link isn't specifically for your transmission, have your transmission serial # in hand and go on Allison website to find the exact manual.

Allison Transmission Home
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Old 06-06-2014, 03:08 PM   #11
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Quote:
Originally Posted by akeyzoo View Post
Check fluid, then go to an Allison shop to have it diagnosed.
akeyzoo
That will probably work.... but it sure won't be inexpensive.

While traveling in '02 I had to have CoachNet tow my coach to an Allison shop, (Detroit Diesel in Bloomington, MN), to diagnose and correct an Allison M3060 "Do Not Shift" condition.
They found a bad 14 ga, wire, which is supposed provide 12VDC from the chassis battery to the Allison VIM, (Vehicle Interface Module).

After replacing only that 15' copper wire they attempted to charge me $2,400!
When I flatly refused to pay that ridiculous price they settled for only(?) $1,500.

Did I get a bargain or what?.........(It still feels like I got or what)!

Mel
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Old 06-06-2014, 05:59 PM   #12
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I have uploaded the 2010 version of the Allison Shift Selector Manual (SA3360EN) to the Manuals section of the Files stored here. This explains how to use your shift selector to retrieve fault codes on 3000/4000 transmissions.

The following link also explains the procedure.
http://www.azhrrvc.org/Troublesootin...ode_Manual.pdf

Once you have the codes, post them here and I will hopefully be able to help you.
Cheers.
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Old 06-29-2014, 04:52 PM   #13
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Codes found

I finally figured out how to get the codes and here they are. D14221.

Now can somebody tell me what they mean?

Thanks a bunch!!!
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Old 06-29-2014, 06:04 PM   #14
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Code D1 4221

Bad Solenoid (F) solenoid is for the TCC.

http://www.transmissioncenter.net/Allison16.jpg

I believe the info below might help with the
Trim solenoids A and B, and C is right above them. The next two are D & E, and F (the oddball) and G on the far upper right of this picture.

Hope this info is correct. I believe it is. Maybe someone else will chime in and confirm or have a better answer
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