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07-25-2016, 08:55 PM
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#1
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Senior Member
Winnebago Owners Club Ford Super Duty Owner
Join Date: Mar 2007
Location: NZ winter and U.S. summer!
Posts: 270
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Voltage issues 2014 Vista 30T
Last few days I have had trouble starting the engine in my RV. I have had to use the booster switch. Assumed the batteries were dying, but tested fine with a load tester.
I suspect a faulty solinoid that has something to do with connecting/ disconnecting the batteries is faulty.
Also the generator starts then stops when I release the rocker start switch. Then will immediately start when I push the rocker switch again, and stop when I release it. Sometimes it would continue to run if I kept the booster switch pushed.
I immediately suspected the batteries but have tested them several times.
I do suspect something simple but can not put my finger on it.
Looking forward to some expert advice!
Pete
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07-26-2016, 03:36 AM
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#2
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Moderator Emeritus
Country Coach Owners Club Appalachian Campers Gulf Streamers Club
Join Date: Mar 2000
Location: Chattanooga, Tn.
Posts: 12,060
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When electrical things do not function properly, you should check the battery voltage at that point. If the voltage source is good, then you have a bad circuit. Check for a bad ground if this is the case. If not then you will need to find the cause of the current flow. Good luck and keep us posted.
__________________
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7
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07-26-2016, 04:56 AM
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#3
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Senior Member
Winnebago Owners Club Ford Super Duty Owner
Join Date: Mar 2007
Location: NZ winter and U.S. summer!
Posts: 270
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Thanks. I do not see the problem as an earth problem as I get power to the dash with the booster switch engaged. Also the steps don't work until the engine is running with the booster switch engaged.
There must be a relay / solinoid that is normally closed but in my case is opening, killing voltage to the chassis side. I hold the booster switch in, get the engine running, then perhaps everything is running on the alternator power. BUT I still have good voltage in the start battery.
Last night I disconnected the house batteries and the engine started one time on the key so the chassis battery had to be connected, but then would not start again until I reconnected the house batteries and used the booster switch. I shut down the engine, disconnected and tested the chassis battery and it is still fully charged and fine.
Can anyone produce a schematic on the wiring?
Pete
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07-26-2016, 05:28 AM
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#4
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner Ford Super Duty Owner
Join Date: Nov 2009
Location: CLARION
Posts: 103
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Quote:
Originally Posted by Peter27C
Thanks. I do not see the problem as an earth problem as I get power to the dash with the booster switch engaged. Also the steps don't work until the engine is running with the booster switch engaged.
There must be a relay / solinoid that is normally closed but in my case is opening, killing voltage to the chassis side. I hold the booster switch in, get the engine running, then perhaps everything is running on the alternator power. BUT I still have good voltage in the start battery.
Last night I disconnected the house batteries and the engine started one time on the key so the chassis battery had to be connected, but then would not start again until I reconnected the house batteries and used the booster switch. I shut down the engine, disconnected and tested the chassis battery and it is still fully charged and fine.
Can anyone produce a schematic on the wiring?
Pete
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You can find your schematics on Winnabegos home page
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07-27-2016, 05:49 AM
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#5
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Senior Member
Join Date: Aug 2012
Posts: 412
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It does sound like a bad ground on the chassis side. I would start by removing, cleaning and reinstalling the ground connection at the starting battery. Then move on to the other ground connections if that doesn't do it.
When you engage the booster switch, maybe the chassis circuit is finding the ground on the house circuit? That is why you then get power to the dashboard, stairs and generator. When you release it - bad ground.
__________________
2023 Grand Design Trancend Xplor 240ML
2004 Phoenix Cruiser 2551
2014 Winnebago Vista 31KE
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07-27-2016, 07:30 AM
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#6
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Senior Member
Tiffin Owners Club Appalachian Campers Mid Atlantic Campers Coastal Campers Freightliner Owners Club
Join Date: Jan 2015
Posts: 1,622
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When you measure your voltage with a voltmeter on your chassis batteries, do it first with the voltmeter leads on the battery posts, then do it again with the positive lead on the battery post and the negative lead on the metal frame of the coach. See if there is any difference, and also try it with a current load, such as maybe the headlights drawing current.
If you have a difference in voltage between those two measurements, then your battery ground has a resistance somewhere. Could be loose, could be corrosion inside the wire sheathing, could be some rust buildup where it attaches to the frame, etc.
__________________
DaveB, Raleigh, NC
2015 Tiffin RED 33AA, w/Honda CRV
VMSpc, Magnum BMK/ARC50
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