General Boards > Technical Support
Motor shuts off while driving
Frank Bergamo:
It’s very possible a low battery would contribute to your symptoms. How old are the batteries? A load test on the batteries will give you an idea of battery condition. As David stated above, is your charging system working properly? Also very possible the cold temps contributed to the shut down issues. Could be two totally different issues going on. If you had summer blend fuel in the fuel tank, then that may have contributed to the problem. All things you need to figure out before next road trip.
Richard Davis:
Fred
I have also had the same kind of issues when the ignition solenoid in the front run bay was failing. It was intermittent at first and would act like I had turned off the switch, but would restart. Eventually it failed completely. If that is the problem, make sure you get the continuous duty solenoid as a replacement and be sure to install the little diode pointing the right way.
Richard
Fred Cook:
Thanks Richard, I’ll look at that too.
Wayne Ogren:
I have been lurking and learning much from this forum for a couple years now. Thank you for all I have learned. We experienced this same behavior driving through Montana, motor died, but would restart, then die again at random times. Turns out it was the in-dash ignition switch, a unit used in 1970's vintage GM pickup trucks. When continuity is lost, the engine shuts down as it is supposed to do when ignition is off. Wiggle the key a bit, restart, and runs fine until the next bumpy bridge or whatever. Replaced the switch with in-stock NAPA unit and has not happened again. Avoid using a heavy batch of keys in your ignition switch.
Fred Cook:
--- Quote from: Wayne Ogren on January 26, 2026, 05:30:30 PM ---I have been lurking and learning much from this forum for a couple years now. Thank you for all I have learned. We experienced this same behavior driving through Montana, motor died, but would restart, then die again at random times. Turns out it was the in-dash ignition switch, a unit used in 1970's vintage GM pickup trucks. When continuity is lost, the engine shuts down as it is supposed to do when ignition is off. Wiggle the key a bit, restart, and runs fine until the next bumpy bridge or whatever. Replaced the switch with in-stock NAPA unit and has not happened again. Avoid using a heavy batch of keys in your ignition switch.
--- End quote ---
I thought about the ignition switch too and bought a new one. But before changing it out I started the coach and wiggled the key around several times and it continued to run normally. Wouldn’t wiggling the key around make it lose continuity the same as hitting a bump?
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