Re: how do u change alternator in a 1999 mustan
Mike, Symptoms are dimming lights at night and battery gauge dropping
while the engine's running from it's normal position.
With a voltmeter check across to + and - terminals of the battery for
14 VDC, or slightly more with the engine ideling, accessories off. 12
VDC or less is unacceptable. Raise engine speed to ~ 2000 RPM and
re-check voltage, if still less than 14 VDC replace alt. If voltage is
correct, replace voltage regulator.
Check electrolite level in battery, if not a dry cell...low mtce., not
Replacement is simply removal of the battery cables, belt, four bolts
and the connector and then reverse the procedure using correctly sized
hand tools. Should take less than an hour overall.