Had one do this on me and it was the alternator.
Bought a used Valeo alternator, and sure enough, the charging problems went away, and it starts charging as soon as I start the car.
Cheapest for me was a new Valeo unit from Rockauto. Cheaper than Turner too.
+1 for Valeo. This job wasn\u2019t fun.
I replaced mine with an oem valeo
I bought a new Valeo alt cheap because this part was broke. After days os scouring the internet I found two sources, but the would NOT retail the part. They only supply rebuilders in bulk.
The voltage regulator on the alternator is bad.
Mesmo um Valeo novo está caríssimo, pede mais orçamentos.
November of 2023 I had to replace the alternator. I purchased an aftermarket and had a mechanic friend install it for me. 6 weeks later it started acting up again and left me stranded. The battery tested good, alternator was bad. I returned the alternator and was warranted a second one. Roughly 2 months later, the battery light comes on while I am out of town. I pulled into a local parts store and had it tested. Battery tested fine. Alternator tested bad. The Nissan dealership says it is the alternator. But since I had not used a factory alternator that was the problem. Apparently the aftermarket alternators can not handle the load and are not set up properly.
Alternator is my wild guess: Valeo alternators have long sucked, kinda like their starter motors.
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