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Old 08-28-2021, 06:43 PM   #1
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Brand: Thor Motor Coach
Model: Vegas
State: Arizona
Posts: 7
THOR #24077
Batter Issue

Three years ago leaving on a trip MH started fine. After 3 hours driving, stopped for gas. MH would not start had to use emergency start. I replacrd battery with Superstart platinum AGM in 8/18. Last week left for Colorado. After driving about 3 hours (190mi) stopped for gas. Same problem again, had to use emergency start switch. Stopped one more time, no problem. Went to leave 7 days later, had to use emergency again but stopped twice on way home, no problems, Started it up twice today no problem. BATTERY NEED REPLACING? THOUGHTS?
Thanks

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Old 08-28-2021, 07:10 PM   #2
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Model: Hurricane 31S
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THOR #6411
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Originally Posted by mtnppl View Post
Three years ago leaving on a trip MH started fine. After 3 hours driving, stopped for gas. MH would not start had to use emergency start. I replacrd battery with Superstart platinum AGM in 8/18. Last week left for Colorado. After driving about 3 hours (190mi) stopped for gas. Same problem again, had to use emergency start switch. Stopped one more time, no problem. Went to leave 7 days later, had to use emergency again but stopped twice on way home, no problems, Started it up twice today no problem. BATTERY NEED REPLACING? THOUGHTS?
Thanks
Take the starting battery to a FLAPS and have them load test it. Battery age is not an entering argument; as to, why the engine wouldn't crank. If the battery test good; then have them check the alternator under load.
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Old 08-28-2021, 07:13 PM   #3
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Model: Winnebago Travato 59G
State: Alabama
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Quote:
Originally Posted by mtnppl View Post
Three years ago leaving on a trip MH started fine. After 3 hours driving, stopped for gas. MH would not start had to use emergency start. I replacrd battery with Superstart platinum AGM in 8/18. Last week left for Colorado. After driving about 3 hours (190mi) stopped for gas. Same problem again, had to use emergency start switch. Stopped one more time, no problem. Went to leave 7 days later, had to use emergency again but stopped twice on way home, no problems, Started it up twice today no problem. BATTERY NEED REPLACING? THOUGHTS?

Thanks


If the battery starts it normally even sometimes it would be hard for me to conclude that it is at fault. But itís easy to check with a load tester. Many parts stores will test for free if you donít have one. Much more likely is a connection, relay or wiring problem. Have you cleaned all of the battery and ground connections lately? Since the emergency start switch works Iím thinking itís just dirty or loose connections at the chassis battery.
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Old 08-28-2021, 07:22 PM   #4
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I'm with Pete'sMH on this one. Even if they look good the connections may not allow proper current flow, either to charge or start. Clean them even if they "look good".
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Old 08-28-2021, 07:30 PM   #5
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Originally Posted by Beau388 View Post
Take the starting battery to a FLAPS and have them load test it. Battery age is not an entering argument; as to, why the engine wouldn't crank. If the battery test good; then have them check the alternator under load.
Thanks will do that in the AM
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Old 08-28-2021, 07:31 PM   #6
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Thanks will do thatin the AM
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Old 08-28-2021, 07:34 PM   #7
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Connections clean with absolutely no corrosion and tight. Emergency start works but also a little slow.
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Old 08-28-2021, 07:45 PM   #8
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3 years is a long time for a battery to last in Arizona. Probably time for a new one. I can only get them to last for 2 1/2 years in our heat! Definitely get it load tested.
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