Question about Mazda MX
May I can put a nail in this one for you.The problem is your alternator. The proper charge rate is 13.6 to 14.2v Now get this. The higher the voltage, the lower the amps.Voltage @ the 14.2 end is moving the minimum amps. @ 15 v there os no charging happenning. Go to the other end and you'll find at 12v the alternator is puring the coals to the battery Alt @ max output. The difference between 12 and 13 / 14 and 15 is the is like a buffer. If the alt charges @ less than 13v for any length of time, It goes poof because of excessive heat.which is an indicator the battery is possibly ready to go poof also. Alt. function as a source of maintenance charging when deman is low and a compensator when demand goes up. That is why a low cranking amp battery is for lawnmowers and people that like buying batts and alts.Now, solution! Have your battery load tested. Chances are real good that it is not up to par. Hence, overworked alternator. If so, replace it. 650 to 850 cold crank amps rating . (cca ) Then have your alt tested output checked if you you end up with a new batt. If your alt puts oout in the given range, which should be around but not below 13v) After starting, it will charge heavy to make up for the cracking, but should get up around 13.6v within 15 seconds. Alts charge at all speeds, unlike generators of old which needed speed (rpms) to put out power. Alts do all the thinking and have internal regulators. Well anyway, You didn't ask for a course in Automotive electrical just a course of action. Remember, Battery first ten alt. Good luck. Any autozone or checker parts store can do all that checking for you. -Ned-
Posted on Sep 04, 2009
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Posted on Jan 02, 2017
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