Allison 3000 Trans - Cummins 400 hard shift problems

[Jimmiesuper]

With only 25,000 on our Alfa Gold it started shifting hard to where the motorhome would shudder. I googled the problem and read about having the electronic management for the Allison reset. So I contacted Allison up in Pacific Wa and took our unit in for them to fix. I should have had them road test the motorhome first, but I did have them change out the transmission fluid and filters. The road test flowing new trans fluid had the same shift problem,,,,,, You have a fuel problem,,,,,,,,the Allison mechanic said,,, Cummins in Renton was busy till mid week so I went to Cummins in Chehallis. They road tested the unit and said I needed to change the fuel filter. They checked the computer and it also showed a fuel problem. A little over an hour we were back on the road. A leason learned,,, carry a spare fuel filter. Jimmie

[RV Wizard]

Hello Jimmie and welcome to iRV2.com. We are glad to have you join us here and we look forward to reading of your adventures and experiences. Thank you for posting of the shifting issue being related to bad fuel filter. Take care, stay safe and keep us posted. I am sure you will enjoy the website and forums.