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alexlula
04-13-2015, 07:25 PM
Hey guys , i just changed my battery to a brand new agm one, tge car starts and no more sudden idle drop when i turn on my headlights but my battery warning light still is on and i tried starting the car and unplugging the battery and it still runs without it, i need help my drive belt is tight on idle my charge is at 13.2 volts and when i give it a bit of gas the warning light dimmes any ideas?

92 mx-5
thanks

Alex

Demon I Am
04-13-2015, 07:27 PM
Check that the alternator tension bolt has not fallen off. I've had that happen before.

alexlula
04-13-2015, 07:35 PM
i will deff check that out tommorow but wouldnt my belt be loose ?

horribleR
04-13-2015, 08:44 PM
charging numbers are supposed to be in the 14-ish range. according to internet peoples.

MemphisMiata
04-14-2015, 01:52 PM
Definitely put a good quality Voltmeter/Multimeter on the battery to make sure the alternator is charging.