RV won't start; Thanksgiving plans doomed

[HoneyBadger]

Originally Posted by TR4

Go here;
http://www.irv2.com/forums/f115/will...rt-199943.html

Similar problem.

Bill

Wow, thank you! It sound like this may be the issue and also something that I can chase down.

[twinboat]

Originally Posted by ronspradley

HoneyBadger, I know you have said your chassis batteries are good at 12.8 volts but batteries should not be reading that high at rest. 12.4 or thereabouts should be full charge. 12.8 might be voltage if they are being charged. If your charger is on when you are getting the 12.8 voltage then you are reading the charger voltage, not the battery voltage. If this is the case, disconnect charger for the night and read again tomorrow morning. If batteries are good they will read around 12.3 as full charge. Hope this helps.


ronspradley

12.3 volts Is a low battery. A full charged battery voltage at rest will show 12.6 to 12.7 volts. 12.8 could be meter error or surface charge.

[marjoa]

Charge charts.

[tims52ford]

Originally Posted by TR4

Go here;
http://www.irv2.com/forums/f115/will...rt-199943.html

Similar problem.

Bill

The proper way to test your batteries, is to check them individully, which means to remove the battery cables fom each battery, then to a load test. If you have one battery in the system that is bad, this will hamper your engine from starting.

[ctmdr]

You batteries are old had same problem you need to replace them.


Sent from my BND-L34 using iRV2 - RV Forum mobile app

[OLYLEN]

Sounds like you are plugged in and at 12.8 fully charged batteries. Test turn on head lights, turn on cab heater fan, if they run OK most likely not a battery problem, also look at the voltage gauge on the dash when you turn everything on. No grid heater indicator, yellow dash light and no wait to start says the trans has start in lockout. Again have you checked the trans power wire on the start batteries and it's 20 amp inline fuse. Until you can power the trans you will be in no start. Sometime, if you can get to the shift pad, there is a couple connectors under the shift pad that can be unplugged and replicated.

LEN

[nathaniel]

what was the outcome?

[HJLowell]

Originally Posted by nathaniel

what was the outcome?

???
Hope all is ok and she got it start ed.

We are going south on 95 Friday so will blow air horns when close Nathaniel

Stoopping over at kenley Friday night.

[Cooperhawk]

If the Allison does not light up the engine will not turn over. Period. It has to verify it is in neutral. I'm going with that. I think there is a fuse somewhere.

Hopefully he'd back on the road somewhere.

[cvd]

Originally Posted by Darwin

Be sure trans is Neutral. I had that problem once and that was the problem, I had shut down without shifting out of drive.

Don't overlook this suggestion. If the shifter has a little "slop" it may look like it's in "N" but be off just enough to deactivate the starting circuit.

[nathaniel]

Originally Posted by John Haggard

???
Hope all is ok and she got it start ed.

We are going south on 95 Friday so will blow air horns when close Nathaniel

Stoopping over at kenley Friday night.

I'm about 1 hour west of 95 so make sure you hold the horn for a few seconds to I'll hear it... safe travel's

[HoneyBadger]

The issue turned out to be a cable/wire from the positive side of the battery to something important on the tranny (ECU?) was laying on top of the muffler and burned through.

Replaced it, tie-wrapped it up out of the way and varoom.

Serious relief.

[SarahW]

Originally Posted by HoneyBadger

The issue turned out to be a cable/wire from the positive side of the battery to something important on the tranny (ECU?) was laying on top of the muffler and burned through.

Replaced it, tie-wrapped it up out of the way and varoom.

Serious relief.

Glad you're up and running. Thanks for the update.

[sdennislee]

We don’t always get to hear about the resolution, thanks for coming back and telling us.

Glad it turned out to be an easy fix, too bad about Thanksgiving.