Electrical problems... [Archive] - M42club.com - Home of the BMW E30/E36 318i/iS

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B2thazizza
07-15-2006, 04:48 AM
Ok well the other day I was installing my system back into my car and after I was monkeying around with the system and tuning the sound from the amp. well the next morning I went to drive the car and the central locking wouldnt work(like i never had it) though i could still get in the car. so I took the battery out and had it tested and the guys at the local auto shop and they said that it still has a good amount of cranking amps but a low voltage reading, so on the charger it goes. I reinstall the battery back into my car and everything was fine. I go to my buddies house for a few hours, and when I go to leave the ABS light is lit but as soon as I rev the engine the gauge cluster lights get brighter and the ABS light goes away. I just replaced the alternator and im running a high power stereo system. im thinking that my battery is toast and I just need a new one. Im thinking something is draining my battery while it is just sitting. what do you guys think? Maybe my alternator isnt adjusted correctly or became loose and is not giving a good charge to the battery. gimme some advice.

Febi Guibo
07-15-2006, 11:57 AM
i would check the ground wire that comes off the back of the alternator... make sure it's not broken (it tends to get frail over time) and bolted tight to the engine.