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Voltage fluctuations, instantaneously.
1999 Ford Ranger

Voltage fluctuations, instantaneously.

(1999 Ford Ranger)
The past two days going to and from work , all is well but within 1 minute , my voltage meter drops to 'L' within 1 minute and i lose all accessories and begin to stall out . Twice upon stalling , voltage returned to normal . Battery tests good , clean tight terminals . Alternator putting out 14+ volts on vehicle testing . Please advise .........
2 answers & 2 comments
Popular Answer
on November 22, 2014
Have seen some problems with this alternator connector;
Voltage Regulator Connector
$ 9.29 /ea
Part Number: VRC441
Product Line: NAPA Echlin Ignition Parts
IMPORTANT INFO: Female Type;w/ 3 Terminals;Gray
Possible intermittent high resistance connection!... Common issue!
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on November 23, 2014
Where is this located so that i may check mine ?
General Diagnosis
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on November 22, 2014
Have seen some problems with this alternator connector;
Voltage Regulator Connector
$ 9.29 /ea
Part Number: VRC441
Product Line: NAPA Echlin Ignition Parts
IMPORTANT INFO: Female Type;w/ 3 Terminals;Gray
Possible intermittent high resistance connection!... Common issue!
Sign in to reply
on November 23, 2014
Where is this located so that i may check mine ?
on November 22, 2014
Alternator output seems good. I'd start with checking the belt, is it slipping and not turning the alternator all time.
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on November 22, 2014
Checked belt ... No slippage . Tight grip fit !

Is it possible for an alternator to be ' on the fritz ' .... Going in and out if service before it completely dies ?


Could this be a voltage regulator issue ?

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