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Showing results for tags 'low voltage'.
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My 82 Brat has been acting up in the cold weather. The voltage needle will read correctly sometimes and everything is fine as far as power output. Sometimes, however, when I start the car, the needle is at about 9v once running, and it obviously isn't charging. It drops off the scale when I turn on the lights, the car must be running soley off the battery, because the lights are very dim and the wipers swipe really slow. If I drive it around enough, the needle will pop back up and the lights will brighten. I think it has to do with engine temperature perhaps, because turning it off and restarting does not make it work correctly, but it seems like the low battery light will blink on, then it starts to charge. I don't know if that is a symptom or a cause, perhaps the light coming on "kicks" something on, or perhaps the light just comes on once the connection finally gets enough continuity. I did notice some corrosion on my battery terminals, so that is where I'm going to start, I'll probably replace the batter (it's pretty old) and clean up the contacts to start. I had the alternator tested when it was working correctly and it tested fine, so I don't think I need to change it out. Any other suggestions on this issue?
