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Originally Posted by ivanbliskavka
Hello, very strange problem, Tried searching the forum, got nothing, please help.
Its a 94 accord 140k miles. A few days ago the car just shut off, no electrical working. After the key was removed hazards worked, but dimmed and died shortly. After the battery was charged, the car worked normal, about 1.5 days later, same situation.
The strange part is, when just the accessories are on, battery light is on, when you drive light is off, acting like it is not the alternator.
I am afraid that it is not a problem with the alternator because of the way the lights are working. Is there anything else to consider, before swapping the alt?
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I strongly feel it's the alternator. Use a meter to measure the voltage at the battery with the engine running. It should be around 14V. If not, it's your alternator.
Most common alternator problem is the brush. The original brush should last 140 - 170 k miles. If you know how to take apart an alternator, you can check the length of the brush. You can just replace the 2 carbon brushes if it's worn. Cost around $5- $10.
If it's not the brush, suspect the regulator. You can replace it alone also.