- Joined
- Jan 22, 2007
- Messages
- 32,078
Got a yankee buddy up in IN with a rusted up dodge. When he starts his truck, the passenger side battery boils over to the point it pops the caps out of the battery.
So, what controls the charging? Does the alternator sense and regulate itself, or does the ECM control the charging? When he pulls that battery, the truck runs fine and doesn't boil out the driver's side battery.
He's put in a new alternator but I don't have any voltage reading from him. He said something like 14.5-15 amps but maybe he meant volts. I have limited info from the in-n-out phone call last night.
Anyone seen this and know where to start? I thought I'd ask the peanut gallery first. I told him to swap the batteries and see if the boil-over follows the battery. It might be faulty internally.
So, what controls the charging? Does the alternator sense and regulate itself, or does the ECM control the charging? When he pulls that battery, the truck runs fine and doesn't boil out the driver's side battery.
He's put in a new alternator but I don't have any voltage reading from him. He said something like 14.5-15 amps but maybe he meant volts. I have limited info from the in-n-out phone call last night.
Anyone seen this and know where to start? I thought I'd ask the peanut gallery first. I told him to swap the batteries and see if the boil-over follows the battery. It might be faulty internally.