Volts Dash Light On

Asked by Nov 21, 2016 at 04:51 AM about the 1991 Buick LeSabre Limited Sedan

Question type: Maintenance & Repair

My volts light on my dash will come on
randomly. Doesn't seem to have any
pattern that I can find. It happens when
driving, low speeds, high speeds, when in
idle. Always random. No check engine light
comes on and no codes have been pulled
when I check. I know it's getting high
voltage when the light comes on because
all my lights inside and out get brighter and
the radio gets louder. Also when the light
comes on I can feel high vibrations in the
gas pedal. Battery is brand new and the
alternator was checked and passed. Any
ideas on what the issue is? Replaced the
spark plugs and wires yesterday. Has a
new water pump, radiator and all hoses,
fresh oil change, and installed an intake
manifold gasket set. Not sure if it relative
but the transmission sputters when in
overdrive at low Rpms at 45mph-50mph
then goes back to normal but it doesn't
happen in drive at those speeds. Torque
converter locking up maybe? My motor is
the LN3 Pre-Series 1 3800

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