RetroMat
Posted a lot
Column Shifting!
Posts: 3,442
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Mar 30, 2015 20:32:11 GMT
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SO my mums got a 1999/2000 Mazda mx5, which has been a awesomely reliable little car but last it it picked up its first glitch! My mum said she was driving at the battery light flickered a few times then came on permanently. When you start the car it comes on after a couple of mins. So I did the usual, check the belt is still there/ good nick and correctly tighten. Checked all the alternator and battery connections, Checked the battery voltage 12.6vish, did a drop test on it all ok. Started the car battery is being charged at 14.6ish volts. . which all Indicates every thing is good and working, but still the light is on! Any one got and clues suggestions? I've going to invest in a workshop manual for it its been so reliable I;ve never bothered before.
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Last Edit: Mar 30, 2015 20:36:11 GMT by RetroMat
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taurus
Posted a lot
Posts: 1,084
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Could still be the alternator's internal regulator that's faulty. The ECU takes a signal from it and if it's out of parameter it'll throw the light on.
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Taurus yes my thoughts on it [regulator] you can remove the regulator and refit another one just 2 screws to remove it .Or pick up another alternator and be done with it .
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eg2
Part of things
Posts: 205
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Apr 21, 2015 11:35:36 GMT
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2nd hand alternator would be my suggestion, picked one up for my mk1 for 20 quid on a forum, been perfect since
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RetroMat
Posted a lot
Column Shifting!
Posts: 3,442
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Apr 22, 2015 18:35:58 GMT
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Cheers all, turned out it was the regulator. charge Light was on and off for a few weeks, then the alt decided it didn't want to charge at all. Auto electrician couldn't get hold of a new regulator so a new alt was fitted.
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