Alternator?
When I start my 88 Blazer S-10 2.8 I can feel like the engine goes up and down very lightly (like breathing). For example the led on the radio goes from lighter to darker. After a while it stops and everything looks ok.
When I'm driving I can see the battery voltemeter go down from 14 and then up again but it never goes down to red. Sometimes I feel like the engine it going to stop ussually when I'm waiting in a traffic light. The battery is almost 3 months old.
Any advice is welcome. Thank you in advance.
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