Question about 1999 Mazda 626

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Mazda etude alternator genarting excessive heat

The alternator of my mazda etude (1999) generates excessive heat to the extent that it burnt the belts. I suspect the regulator may be worn out but I'm not sure whether this car has a regulator and if so where its located?

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  • Anonymous Mar 21, 2014

    The battery light came on. Alternator checks good, battery checks good, I read on google this car has two voltage regulators, one on alternator, one on instruments. My question is where is the regulator for the instruments?

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1st off you would give everything a good visual examination. Look for loose alternator belt. Also look for wires that could have become disconnected or cut that leads to the alternator.

Then you would hook up a volt meter to the battery cables and check the voltage.
After this you would start the engine and recheck the voltage. The voltage on a charged battery should read around 12.5 volts. While the engine is running turn on a few accesories and speed up the idle a little the voltage should read around 14.5 volts.

If the voltage does not increase suspect either a faulty alternator or regulator.

Posted on Sep 09, 2008

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