My battery light stays on now for the last three days, but a battery test at the parts store turned out fine. How do I know if it's the alternator or the voltage regulator on my car. I have a 1995 Toyota Celica/ST 1.8 manual transmission with air conditioning. The guy said my battery at load was just a tad bit low but he said it shouldn't be a problem. I'm not totally sure it's the alternator though. Before I put the money and time into a new alternator I'd like to know how I can find out if it's bad. Thank you for your time.
Don't remove the alternator.
Drive it to Autozone or something similar so they can run a diagnostic test on the charging system.
6AN -6AN Fuel Rail Delivery Adaptor Regulator TOYOTA 1JZ GTE Celica 3SGTE, Fuel Rail Delivery Adaptor Regulator TOYOTA 1JZ GTE Celica 3SGTE, 1995 1996 1997 1998 1999 Toyota Celica GT Convertible Door Window Regulator NEW!, Toyota Celica RA20,RA21,RA24,TA22 RR WINDOW REGULATOR 1971,1972,1973,1974,1977, Toyota Celica TA27 RA24 RA29 VOLTAGE REGULATOR CONTROL 27700-38040, 1976,1977,77, Toyota Celica RA20 RA21 TA22, VOLTAGE REGULATOR 71 72 73 74,1971,1972,1973,1974, Toyota Celica RA20,RA21,RA24,TA22 LR WINDOW REGULATOR 1971,1972,1973,1974,1977, 1987 TOYOTA CELICA GT - RIGHT WINDOW MOTOR REGULATOR, 1987 TOYOTA CELICA GT - LEFT WINDOW MOTOR REGULATOR, USED 00 01 02 03 04 05 TOYOTA CELICA PASSENGER FRONT WINDOW REGULATOR, USED 00 01 02 03 04 05 TOYOTA CELICA DRIVER FRONT WINDOW REGULATOR, USED 90 91 92 93 TOYOTA CELICA DRIVER FRONT WINDOW REGULATOR MAN, USED 90 91 92 93 TOYOTA CELICA PASSENGER FRONT WINDOW REGULATOR MAN, NEW VOLTAGE REGULATOR ALTERNATOR FOR TOYOTA COROLLA 1.6 CAMRY 2.5 CARINA CELICA, TOYOTA CELICA RF WINDOW MOTOR REGULATOR 94-99 passenger side/front, 00 01 02 03 04 05 TOYOTA CELICA R. FRT WINDOW REGULATOR, 00 01 02 03 04 05 TOYOTA CELICA L. FRT WINDOW REGULATOR, 00 01 02 03 04 05 TOYOTA CELICA R. FRT WINDOW REGULATOR, Fuel Rail Adapter Regulator TOYOTA 1JZ-GTE CELICA 3S-GE, ALTERNATOR REGULATOR REPAIR KIT TOYOTA COROLLA CELICA GEO PRIZM, ALTERNATOR REGULATOR REPAIR KIT Geo Prizm Toyota Celica Corolla 1.6L, FUEL PRESSURE REGULATOR GEO PRIZM TOYOTA CELICA COROLLA, TOYOTA CELICA MR2 FUEL PRESSURE REGULATOR 23280-74100, TOYOTA COROLLA CELICA 4AGE FUEL PRESSURE REGULATOR , 00 01 02 03 04 05 TOYOTA CELICA GTS DRIVER SIDE WINDOW REGULATOR, 00 01 02 03 04 05 TOYOTA CELICA GTS RIGHT SIDE POWER WINDOW REGULATOR, TOYOTA CELICA LF WINDOW MOTOR REGULATOR 94-99 drivers side/front, 90 91 92 93 TOYOTA CELICA L. FRT WINDOW REGULATOR ELEC, 90 91 92 93 TOYOTA CELICA R. FRT WINDOW REGULATOR ELEC, 00 01 02 03 04 05 TOYOTA CELICA L. FRT WINDOW REGULATOR,
