Battery Light on

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ducktape69
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Battery Light on

Postby ducktape69 » Sun Jun 15, 2008 4:30 pm

Hi guys,

my nb8b hasnt been dríven in about 4 weeks....
anyway, went for a drive today and the battery light is just permanently on. car starts fine and everything.

will the alternator charge the battery over some time, or do i need a trickle charger or something?

Cheers,
Sam
BLECK 2002 Mazda MX5 NB8B. Custom Heatshielded CAI . KYB AGX's + King Springs. 17\" Bleck Rims. Custom BASSSS Install.

RG.net
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Re: Battery Light on

Postby RG.net » Sun Jun 15, 2008 6:08 pm

ducktape69 wrote:Hi guys,

my nb8b hasnt been dríven in about 4 weeks....
anyway, went for a drive today and the battery light is just permanently on. car starts fine and everything.

will the alternator charge the battery over some time, or do i need a trickle charger or something?

Cheers,
Sam


mine has started doing this too, seems a few of our mx's have been. i didnt drive mine for about 4days and it started flickering, but when i stop at lights it just stays on, but as like you starts fine. hows your idle? mine has been dipping, however i think that is my 02 sensor.
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ducktape69
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Postby ducktape69 » Mon Jun 16, 2008 11:19 am

haha funny we have the exact same issue....dipping idle also...

WELL mine was not actually the battery...i popped the bonnet last night to find that the AFM temp sensor plug was not plugged in hahaha.
plugged it back in and the battery light went away.....!

looks like mazda ran out of lights so they just used the battery light as a CEL for the temp sensor haha :)
BLECK 2002 Mazda MX5 NB8B. Custom Heatshielded CAI . KYB AGX's + King Springs. 17\" Bleck Rims. Custom BASSSS Install.

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Re:

Postby RG.net » Mon Jun 16, 2008 6:37 pm

ducktape69 wrote:haha funny we have the exact same issue....dipping idle also...

WELL mine was not actually the battery...i popped the bonnet last night to find that the AFM temp sensor plug was not plugged in hahaha.
plugged it back in and the battery light went away.....!

looks like mazda ran out of lights so they just used the battery light as a CEL for the temp sensor haha :)


my temp sensor was loose at one stage and i pushed it in but it started again, i checked again today and was a little loose so i pushed it and it stopped, i did take my cam cover off to polish, and my cai, maybe i didnt tighten the air filter enough then. the way my light flashes but is wierd, did yours just stay on the whole time? my idle dips without the battery light coming on.
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ducktape69
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Postby ducktape69 » Mon Jun 16, 2008 11:26 pm

mine never flashed.
just stayed on.
seeing as a hard CEL means NO temp signal, maybe flashing CEL indicates something is wrong.?..perhaps thats an 02 sensor warning?
BLECK 2002 Mazda MX5 NB8B. Custom Heatshielded CAI . KYB AGX's + King Springs. 17\" Bleck Rims. Custom BASSSS Install.

RG.net
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Re:

Postby RG.net » Thu Jun 19, 2008 4:18 pm

ducktape69 wrote:mine never flashed.
just stayed on.
seeing as a hard CEL means NO temp signal, maybe flashing CEL indicates something is wrong.?..perhaps thats an 02 sensor warning?


thats what i was thinking, but since i checked it the second time it hasnt flashed nor the idle has dropped, which is good. 8)
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