1990 Southwind motorhome won't keep running
we have a 454 Chev engine, with TBI. It will start, but cut out and die within 1 min. maximun. We've sprayed starting fluid into the intake (TBI) and it died anyway (it made no difference). We also ...
Forum Discussion
Get a new battery.
All of the high voltages you posted are with jumpers/charger attached and working. You are reading the voltage being supplied by the external device, not the battery. Any 12 volt battery that drops to 8 volt reading is shot.
In fact, 10.5 is a 0 percent of charge. You can find a table here
You may also want to get the alternator checked. Sounds like it is not charging.
All of the high voltages you posted are with jumpers/charger attached and working. You are reading the voltage being supplied by the external device, not the battery. Any 12 volt battery that drops to 8 volt reading is shot.
In fact, 10.5 is a 0 percent of charge. You can find a table here
You may also want to get the alternator checked. Sounds like it is not charging.
