Question about 1994 Mazda 626

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No heat...Needed new battery

My 1994 mazda 626's temperature gauge went to hot(H) and it had stopped blowing out hot heat. At the same time the battery light stayed on. There didn't seem to be a problem with the battery until days later. I was told it may be the alternator, but I don't understand what that would have to do with the heat and running hot. Especially since both happened at the same time. Both meaning on H and battery light coming on. The person I took my car to didn't seem to have an answer for both. I did get a new battery but that didn't change the temperature and heat situation, and the battery light is still on. An answer for both problems-which I believe is one problem causing the other-would be appreciated. Thanks.

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  • Kjanellb May 09, 2009

    I am getting ready to replace my alternator. My battery light is on and has stopped while driving it. I know that it is likely that my alternator is not working. However, I also have no heat!

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Well #1 with the gauge going to hot and no heat,10 to 1 it's a bad thermostat, stuck in the closed position.If you drove it like that for any length of time, with it hot, other things can get damaged.Change the thermostat, then have the alternator checked to see if it's charging.The meter should read 13 to 14 volts or more.

Posted on Jan 27, 2009

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