86720 ST Posted December 23, 2019 Report Share Posted December 23, 2019 I replaced my alternator, and battery about three weeks ago. Now battery is dead its not getting a charge from the alternator. Quote Link to comment
datzenmike Posted December 23, 2019 Report Share Posted December 23, 2019 Maybe it was neither. What were the reasons for replacement? What was the truck doing or not doing? Does the red charge light come on when you turn the ignition ON but don't start it? Is the red charge light on when running? Quote Link to comment
86720 ST Posted December 23, 2019 Author Report Share Posted December 23, 2019 the light comes on. the charge light is very dim when running. Quote Link to comment
datzenmike Posted December 23, 2019 Report Share Posted December 23, 2019 I imagine you traded in your original alternator? Not much to go bad, bearings or brushes. You used to be able to get a replacement brush kit for $5. Replacement (rebuilt) alternators today are very inferior to the originals and in many cases they are what is known as 'bad in the box'. The failure of 'brand new' alternators can approach 50% I've heard. An original Hitachi alternator from the dealer is close to $400 so with a 50% mark up that's a close to $200. What do these 're-manufactured' and 'guaranteed for life' ones go for? Take it to NAPA or where it can be tested for free and see what's up. Quote Link to comment
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