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Old 01-12-2015, 09:32 PM   #11
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390BH-60 Fifth gear issue

I would call the FL hotline, see if they can recommend anything, then take it to an Allison shop and have them check the CPU on the transmission.

I didn't have this problem but I had a communication issue with mine. It was covered under warranty.
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Old 01-27-2015, 11:23 PM   #12
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I had the identical problem in mine. All boost would drop in my 4 to 5 shift. Freightliner was able to diagnose it in about 10 minutes back to a simple programming error. Call freight liner corporate for assistance because my local service center was confused until they got direction from FL. Once FL was involved, my coach was ready in minutes. Glenn Collins at FL was the one who helped me. 800-385-4357. Hope this helps. Call me if you need my info so Glenn can pull up my case for reference. I'm at 3102613443. -brian
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Old 01-28-2015, 12:16 PM   #13
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Excellent. Thanks! I will take it in next week and report back
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Old 03-21-2015, 10:52 AM   #14
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Quote:
Originally Posted by bborder View Post
I had the identical problem in mine. All boost would drop in my 4 to 5 shift. Freightliner was able to diagnose it in about 10 minutes back to a simple programming error. Call freight liner corporate for assistance because my local service center was confused until they got direction from FL. Once FL was involved, my coach was ready in minutes. Glenn Collins at FL was the one who helped me. 800-385-4357. Hope this helps. Call me if you need my info so Glenn can pull up my case for reference. I'm at 3102613443. -brian
Brian: Thanks for your help. It was a simple programming error. "Powertrain Protection" was enabled and should be disabled on motorhomes. Once that was corrected, it drives like a champ. Boost in 5th gear is back!
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