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Old 04-28-2014, 08:34 PM   #15
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Have you tried to use jumper cables to jump start the coach. I used to have to jump start my tractor trailer. I would put the positive to the big cable on the alternator and the ground to the frame or engine. They taught me this at the company. Started every time this way.
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Old 04-28-2014, 09:59 PM   #16
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Lots of things not working. Seems like most of them on the chassis side of the equation. Have you tried taking a jumper cable. Go to the negative post on the CHASSIS battery with the black jumper cable. Take the other end of the black battery cable and go to a good solid ground on the chassis frame. Make sure the area you attach on the frame is good and clean. Use a wire brush and clean it off. See if that fixes your problems. It sounds like you have a ground issue.
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Old 04-29-2014, 06:03 AM   #17
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Good luck there and keep us posted on what you find.
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Old 04-29-2014, 10:37 AM   #18
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Sorry to hear you are having problems.


Concentrate on the basics first.
If the engine does not start turn there is an issue with current from the engine battery.
The coach batteries are not important in this equation (except for boost)
You mentioned that the electric seat, the steps are not working. These on a good coach are all on the engine battery not the coach battery. So makes sense that they dont work.

Easy checks:
Disconnect shore power
Turn the engine key to the on position.
o Check headlights, flashers, high beam? Are they working and bright enough ?
o If not your main battery may be dead
Try to start it ! Do you hear the starter clicking like tic.tic.tic.tic.
o If so that implies that there is not enough power going to the starter
o There could be a series of reasons for that but if multiple items are not working (aka steps, slide, starter headlights) it points to :
A bad battery
A bad battery connection (most probably the battery posts)or one of the main cable is undone.
If there a battery disconnect switch for the engine battery? If so you may need to check that too.
A main fuse gone bad (doubtful )
Next step use a volt meter and check the engine battery?
o 12 volts or more?
If not a battery charger is not going to be enough to start such a big engine. But you may try to recharge the battery directly. Even if you connect to shore power the coach charger is not powerful enough to start an engine on its own (needs to recharge the battery).
If you have a boost switch , have someone activate it and measure voltage at the battery again. If it goes up it should start your engine. Usually the boost switch make a small clicking noise when it is held in place (its a relay)
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Old 04-29-2014, 10:55 AM   #19
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As indicated by others.....you need to check the voltage at your starting batteries with the coach disconnected from shore power. If they are anything less than 12.6 volts...that is your problem. All indications are that they (the starting batteries) are dead.


When you started the engine earlier, how long did you let it run? Just idling will not charge the batteries and in fact will probably reduce the charge in the batteries so that they will be less charged when you turn the engine off. Starting requires a LOT of cold cranking amps and once started, it takes quite a bit of charging to get the batteries back up to a full charge.

Good luck

Ron
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Old 04-29-2014, 11:09 AM   #20
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Okay, this may sound silly but...............is the transmission in neutral? Is the cruise control off?
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Old 04-29-2014, 11:20 AM   #21
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It could be many things, but if it just clicks when you try to start, a new set of batteries could very well cure your problems. And change all of them, new and old weak batteries don't play well to gather. A bad cell in one has probably ruined them all to some degree.
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Old 04-29-2014, 05:11 PM   #22
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If you guys go back and read Mr. Millers original post he has already checked his batteries and they are good. He has some power such as the dash has power. I would say starter but there are some things that are not working such as power steps, seats, slides a few things like that. When I see strange indications where some things work and others don't I almost always start looking for bad grounds.
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Old 05-01-2014, 01:31 PM   #23
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Quote:
Originally Posted by gemini5362 View Post
If you guys go back and read Mr. Millers original post he has already checked his batteries and they are good. .
No, you need to go back and read Mr. Millers original post....

He checked the batteries when connected to shore power and read 14.6 volts indicating that the converter is indeed charging the batteries. He did NOT check the voltage when disconnected from shore power which would then indicate the true charged value of the batteries. You can have a dead battery and it will show 14.+ volts when being charged ....but still be a dead battery.

Mr Miller still needs to determine the actual voltage of the batteries while at rest and not connected to anything. Only then can he eliminate the batteries as a possible source of the problem.

Ron
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