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Discussion Starter · #1 ·
Truck runs great when at speed but when i pull up to a stop light the voltage drops way down and then slowly seems to build back up and the AC cycles to hot. The Idle become very choppy and seems like the truck wants to die.

I'm thinking it is either the ALT or the Battery but not sure and haven't had the free time to take them out to have them tested so i figured i would ask here.
 
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