Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > POWER TRAIN GARAGE FORUMS > Allison Transmission Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-28-2021, 08:15 PM   #1
Member
 
Join Date: Oct 2017
Posts: 37
Allison MH2500 “Check Tranny” comes on

I have a 2006 Coachman Cross Country 370DS with a Cummins ISB 300 hp motor. Driving home the check tranny light came on in the idiot light display and the computer box. Tranny was shifting fine, it was about 72F, and had just finished a long downhill with the engine brake. Pulled to the side, turned off the engine, and checked the tranny fluid. Looked fine so I restarted the engine. Check tranny light was off. Drove for about 2 hours and it came on again. Turned engine off and waited about 5 minutes, then restarted. Check tranny light was off. This repeated about four times.

Don’t know if it’s related but I have had issues with the Speedo reading strange. Most recently it reads pegged, above 85 mph. Even when stopped it reads 65 mph. Maybe a problem with the Can Bus? Could this also affect tranny controller?
Pknappe is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 07-30-2021, 08:33 PM   #2
Senior Member
 
Join Date: Jun 2019
Posts: 440
I recommend getting the OBD codes read. It could be anything from a bad sensor to an overheating trans. Even if the light isn;t currently lit, there will be a history of codes.
__________________
'18 Rockwood 2109S '17 Silverado 2500HD WT. Hookups? What hookups? Mountains, please.
HopsBrewster is online now   Reply With Quote
Reply

Tags
allison



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Normal Coolant, Tranny temps...extra tranny cooler necessary? marjoa Ford Motorhome Chassis Forum 8 12-20-2017 02:47 PM
MH2500 - Prognostics. Adam Hunter Allison Transmission Forum 5 05-09-2015 04:26 AM
Allison Tranny Temp Check? Ustamiata Winnebago Industries Owner's Forum 6 11-09-2008 09:15 AM
Allison tranny in the mountains ron55 Workhorse and Chevrolet Chassis Motorhome Forum 51 09-26-2006 03:12 PM
Allison Synthetic Tranny Fluid Gary RVRoamer Class A Motorhome Discussions 10 07-20-2006 07:28 PM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 02:32 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.