Bad alternator or? - Page 2 - Dodge Cummins Diesel Forum
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post #13 of 16 (permalink) Old 08-14-2019, 01:43 PM
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Most likely, battery on D. side pooched out and went open circuity or cable came loose, causing all the max output charge of the alternator, 135 amp+, dumped into the P side batt until it boiled over.

Flush down the P side of engine bay with baking soda solution to neutralize the remaining dried acid, can and will eat right through the frame. Also douche any other spots of batt. acid corrosion. Leave the baking soda solution on for a couple days and then flush off with a light spray. No power washer under the hood of the Ram unless you know what you're doing, can destroy far more than the batt acid.

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post #14 of 16 (permalink) Old 08-14-2019, 03:10 PM
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Most likely, battery on D. side pooched out and went open circuity or cable came loose, causing all the max output charge of the alternator, 135 amp+, dumped into the P side batt until it boiled over.



Flush down the P side of engine bay with baking soda solution to neutralize the remaining dried acid, can and will eat right through the frame. Also douche any other spots of batt. acid corrosion. Leave the baking soda solution on for a couple days and then flush off with a light spray. No power washer under the hood of the Ram unless you know what you're doing, can destroy far more than the batt acid.
Just out of curiosity, what is the correct policy to wash one of these down?

Cool motor obviously
Cover obvious electrical connectors with foil, anx dont concentrate the fuel system parts with pressure? Dont get anything on the air filter either(CAI guys)

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post #15 of 16 (permalink) Old 08-14-2019, 05:19 PM
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No, a 135amp alternator won't "pooch" a battery due to "max output charge".

A 135amp alternator is pretty basic spec, and is often used in applications that have barely 550+ CCA on a single battery setup.

Original poster - I'd look towards a short to ground & corroded terminal to strand crimps on your alt hot to battery cable, a blown alternator diode that causes an internal short to ground, and a short to ground on one of the alternators field wires (usually chafed insulation) - this could cause a battery to severely overcharge & boil over.

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Most likely, battery on D. side pooched out and went open circuity or cable came loose, causing all the max output charge of the alternator, 135 amp+, dumped into the P side batt until it boiled over.

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post #16 of 16 (permalink) Old 08-14-2019, 11:36 PM
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Originally Posted by smelonas View Post
Just out of curiosity, what is the correct policy to wash one of these down?

Cool motor obviously
Cover obvious electrical connectors with foil, anx dont concentrate the fuel system parts with pressure? Dont get anything on the air filter either(CAI guys)

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Like you said Cold engine , I get a few shopping bags , one over the alternator , air filter and one over the TIPM and go to town with degreaser and water, will not use a lot of pressure, been doing this since I bought the truck never had an issue


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