Take the car to Advanced Auto or Auto Zone, or one of the other aftermarket
auto parts stores nearby and have them test the charging system. They'll do
this for free. I'd guess the alternator output is low.
'93 Lumina? 3.1? I can diagnose that with my eyes closed. Needs a new
Between our '92 Lumina 3.1 (owned for 8 years) and '88 Cavalier 2.8 (owned
for 4 years) I changed about 13 alternators. F'in things.
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