Question about 1991 Mazda RX-7

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My battery drains overnight

I have a 1991 mazda rx7 and the battery keeps draining overnight. i thought the alternator was not charging it enough so i got a new one and replaced it but still the same thing and i have done this with two brand new batteries so im just not sure where else to look... and i know that no other lights or switches are left on so i am stuck please help...

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  • sideburnpdb Dec 10, 2008

    well the car's air conditioning doesnt work...and i was told that the previous owner took off some parts of the a/c system so im not sure what is not there but ill take a look...

  • nahomalex Apr 09, 2009

    The car wont start at all??? I have 1991 Mazda Rx-7 and i got it for a cheap price but now every thing is stoping to work. first the speed meter then the windows and now the car is not starting at all and i think it is a problem with the battrie or some thing in the electricas.

  • had5399 Apr 29, 2009

    I have the exact same problem with my '86. it started once then would not start again. like you, I changed out the battary and the altinator. it gets to the point of turning over but, doesn't

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Check and make sure the Air Condition cluch is disengageing, I had the same problem afew years back.

Posted on Dec 06, 2008

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My neighbour had the same problem. The dealer advised him to connect a 300mA mains adaptor to the battery over night to trickle-charge the battery. He was told the alarm system drains the battery.

Posted on Jan 13, 2009

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If it goes dead overnight something may be draining it, or the alternator may not be charging enough.
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First disconnect the battery overnight just to make sure the battery is not self discharging......if it's dead or down in charge while disconnected....time for a new one.
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Your job is to remove one fuse at a time until the light dims.
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