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Electrical Discussion of preventative/corrective maintenance and other technical issues regarding your coach's electrical system.

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  #1  
Old 2 Weeks Ago
Ldr Ldr is offline
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Default Electrical problem

This past winter while in storage and plugged into 50 amp, I kept noticing the microwave needed to be reset on my '96 widebody. This is the first time this happened since it was new. Yesterday, the problem worsened. I just pulled onto the freeway when I noticed my tach had gone to zero, and my oil pressure gauge was pegged all the way to the right. I pulled over, and as soon as I put it in neutral and pulled the airbrake, the tach and oil pressure guage worked again BUT, the microwave had to be reset once again. Fast forward to today, and again the tach quit while going down the highway, and this time I also noticed all of the ac outlets quit, the microwave quit, and the oil pressure, alternator gauge, and DC and AC volt gauges were all pegged to the right. I pulled over and without needing to do anything, they all started working again, including the outlets and the microwave. A little while later while idling in a parking lot, same thing. However, as soon as I pressed down on the accelorator, everything returned to normal. Has this happened to anyone else? I have the original two invertors, and 6 Lifeline AGM 12 volt house batteries.
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Lorin Riutta
Ishpeming, MI
1996 43'
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Old 2 Weeks Ago
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Lorin, I would start by disassembling ALL the battery cables and load test each of the house batteries and each of the 3 coach batteries.

Also visually check each battery cable and clean the terminals.

If possible it would be beneficial to post some pictures of your battery banks before you pull things apart...we love pics.
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Dick & Patsy Gideon
1999 43 LXI Single Slide Body # F124510
2005 JEEP Liberty Limited CRD (diesel Toad)
SOLD 89 FC in 2012; SOLD 88 WB in 2016
Rolla, MO 65401
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  #3  
Old 2 Weeks Ago
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Thanks Dick. I will do that this week. A faulty battery or battery connection could cause that? Unfortunately, I am not very mechanically inclined, and my knowledge of this stuff is less than limited.
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Lorin Riutta
Ishpeming, MI
1996 43'
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Old 2 Weeks Ago
Ldr Ldr is offline
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Good grief. It seems I'm not so skilled at posting pictures either. I've tried several times now to post some photos I've taken with my phone.
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Lorin Riutta
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1996 43'
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  #5  
Old 2 Weeks Ago
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Default Here are a couple of photos before I touch anything

Let's see if I can figure out posting photos to begin with.
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Lorin Riutta
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1996 43'
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  #6  
Old 2 Weeks Ago
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Default Two more photos

Ok, so here are a few photos before I touch anything. The batteries are dirty, but nothing looks loose anyway.
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Lorin Riutta
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1996 43'
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  #7  
Old 2 Weeks Ago
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How about some history.
How long have you had the coach?
Have you ever replaced the batteries?
Have you ever cleaned the battery terminals/cables?
Do you know how to clean the cables?
do you know what a load tester is?
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Is that large rotary switch (pic #3) in the correct position? Those switches are known to fail...
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Dick & Patsy Gideon
1999 43 LXI Single Slide Body # F124510
2005 JEEP Liberty Limited CRD (diesel Toad)
SOLD 89 FC in 2012; SOLD 88 WB in 2016
Rolla, MO 65401
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  #9  
Old 2 Weeks Ago
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As far as history- I purchased it from the original owner last summer. The start batteries are about 3 years old, and the 6 Lifeline AGM house batteries are closer to 10 years old. The coach is always plugged in, and it is unlikely that he ever ran the batteries down to 50%. When I dry camp, my monitor still shows over 12 volts in them morning if I put the fridge on gas. I have never cleaned the terminals/batteries/cables. I just check them now and they are all tight, and don't look corroded. I do not know what a load tester is.

I know the house batteries are considered old. I've understood before that as batteries get old, they just won't hold a charge as long, so I figured as long as they don't seem to go dead quickly, I'm probably alright.



Can batteries cause an intermittant issue like this?
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Lorin Riutta
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1996 43'
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  #10  
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My WAG, given the intermittent nature of your problem, would be a bad ground.
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95 WLWB 40' SOLD!

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Roscoe, Illinois

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