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Old 10-09-2013, 08:50 PM
Nick300cd Nick300cd is offline
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Join Date: Oct 2013
Location: Woodbridge Ontario Canada
Posts: 31
Unhappy 82 300cd mystery battery drain

Hi I'm in need of some of the expertise on this forum! It's a 1982 300cd that likes to kill the battery in under 15 min intermittently. I have tried looking for a phantom draw with a meter but everything checks ok. I have load tested the battery and it is good-used three different testers. The alternator is fine. The cables and connections seem good. It doesn't take much to start it-a quick boost and its fine. Then it will start again no problem. Can be weeks, then no start. Wtf can drain a battery so fast and not start a fire. When it does go dead I hear a motor moving behind the dash(guessing damper door driver resetting?) and the dash clock is loud. Now the warning buzzer that never worked buzzes when I open the door with ign off. And the chime module doesn't always chime when the ign is turned off. It's not the stereo either. Please help. It's driving me crazy
Cheers
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