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1994 Mazda 626 alternator problem
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hrichard
New User
Feb 12, 2011, 7:03 PM
Post #1 of 2
(4338 views)
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1994 Mazda 626 alternator problem
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Had alternator replaced maybe 3 months ago (was rebuilt one probably). twice within last 2 weeks, lights start dimming and car just dies and won't start back up. Took back to alternator shop and they say alternator good. Had Advance Auto run diagnostic on battery, starter, & alternator and shows alternator producing only 12.1 volts and they say alternator bad. Had Autozone run test and they say battery good, and alternator good, but voltage regulator is bad. My question is: Is the regulator part of the alternator? If not, when alternator is replaced, do you normally check voltage reg. to make sure it's OK. Should the alternator shop have checked the regulator when I took it BACK to them (after car had died twice on me) to check the alternator? Wordy, I know, but thanks!
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Feb 13, 2011, 8:31 AM
Post #2 of 2
(4328 views)
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Re: 1994 Mazda 626 alternator problem
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If the 4 cyl the voltage regulator looks like this..........
Hard to know but by that pic my guess is it's part of the alternator and with the hole suggest it's at least part inside and should be covered by warranty still. Testing could be bypassing this whole thing and inconclusive. Only having 12.1 volts with a running engine isn't enough. If belt is tight enough and not just a disconnect alternator, burned plug, bad wiring my best guess is this alternator is bad.
Part was not available at two places I just checked so it would mean whole alternator,
T
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