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Electrical short is draining the battery with the key out.

Customer Question
Electrical short is draining...

Electrical short is draining the battery with the key out

Mechanic's Assistant: What's the make/model/year of your truck? Engine type?

International 3800 1999 t444e

Mechanic's Assistant: Are you fixing your truck yourself? What have you tried so far?

Unplugged the batteries tested them tested for resistance across alternator terminals

Mechanic's Assistant: Anything else you want the truck mechanic to know before I connect you?

That's fine

Submitted: 8 months ago.Category: Medium and Heavy Trucks
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Answered in 27 minutes by:
11/13/2017
Technician: Andy, Truck Diagnostic Technician replied 8 months ago
Andy
Andy, Truck Diagnostic Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 1,966
Experience: International and Isuzu trucks , International, Maxxforce, Cummins and Isuzu engines, Diagnostic and electrical troubleshooting specialist , Hvac and truck /trailer refrigeration troubleshooter
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Hi my name is ***** ***** Can we start with the last 8 digits of your vin number please?
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Customer reply replied 8 months ago
XH213922. tried to start it briefly before lunch, didnt work which often happens in the cold on the first try. when came back from lunch batteries were totally dead. unbolted them they are fine there's a short somewhere. vehicle batteries had been very very low going to 7-8V while cranking yesterday due to us not driving much recently and a few things discharging them (water pump, 5V usb ports). also have been abusing the alternator to charge our house 24V battery bank due to cloudy weather (we have solar array for house batteries)
Technician: Andy, Truck Diagnostic Technician replied 8 months ago

Ok so we are looking for a parasitic drain . The batteries tested fine ... correct ?

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Technician: Andy, Truck Diagnostic Technician replied 8 months ago
Ask Your Own Medium and Heavy Trucks Question
Technician: Andy, Truck Diagnostic Technician replied 8 months ago

Please follow this link to help guide you with testing for parasitic draw .

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Technician: Andy, Truck Diagnostic Technician replied 8 months ago

Hi there . Looking for an update! How did it go ?

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Technician: Andy, Truck Diagnostic Technician replied 7 months ago

Hi there. Did my post help you? PLease do not forget to rate my service to you ! I get nothing otherwise for helping out. Thanks!

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Andy, Truck Diagnostic Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 1,966
1,966 Satisfied Customers
Experience: International and Isuzu trucks , International, Maxxforce, Cummins and Isuzu engines, Diagnostic and electrical troubleshooting specialist , Hvac and truck /trailer refrigeration troubleshooter

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