MH wont start on chassis battery. Has 13V
I have a 2008 Country Coach Affinity. It will not start (not even try to crank) on the chassis battery. Everything lights up on the dash OK, it even shows 13V on the voltmeter. Turn the key and not...
Forum Discussion
Ummmmm interesting stuff.
The alternator can maintain the starting battery at peak voltage and run all the accessories of the chassis because it develops it's own negative.
But if the main chassis negative cable develops a high resistance due to battery post to cable or cable to frame corrosion or looseness, then a a certain amperage this cable will fail to complete a circuit.
That cable, the chassis battery cable, has nothing at all to due with the house batteries. Either positive or negative sides. When the paralleling switch is enabled the house batteries do all the work. The chassis battery is leaning on a shovel.
It's time to clean and tighten all four connections of the chassis battery. Paying particular attention to the cable to frame (or engine) negative connections.
Try this and see if it helps. I have seen far too many bad cables where the copper stranding inside the cable fails where the stranding meets the terminal. So do not rule that out if cleaning connections alone does not help.
The alternator can maintain the starting battery at peak voltage and run all the accessories of the chassis because it develops it's own negative.
But if the main chassis negative cable develops a high resistance due to battery post to cable or cable to frame corrosion or looseness, then a a certain amperage this cable will fail to complete a circuit.
That cable, the chassis battery cable, has nothing at all to due with the house batteries. Either positive or negative sides. When the paralleling switch is enabled the house batteries do all the work. The chassis battery is leaning on a shovel.
It's time to clean and tighten all four connections of the chassis battery. Paying particular attention to the cable to frame (or engine) negative connections.
Try this and see if it helps. I have seen far too many bad cables where the copper stranding inside the cable fails where the stranding meets the terminal. So do not rule that out if cleaning connections alone does not help.
