F650 Issues Limp Mode

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Dec 7, 2015 | 09:57 AM

smythcounty

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F650 Issues Limp Mode

I have an 2009 F650 Allison Transmission that will drop its voltage and then go into limp mode and then fix itself after a few minutes. All the lights come on including inhibit range which doesn't allow the vehicle to go in to reverse. It doesn't leave a engine code after this occurs. The alternators both are consistent when checking them. There is no other signs or indications. Does anyone know where to start with this issue or have had anything similar occur.

Thanks