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1964 Buick Riviera drained battery

Tiny
TARAI
  • MEMBER
  • 1964 BUICK RIVIERA
  • V8
  • FWD
  • AUTOMATIC
  • 23,000 MILES
Rebuilt

I have already checked the alternator, all illuminators, radio, a/c, lighters. All those things are good. The battery drains completly every night after driving the car. I have also already had the battery tested and it is good. What should be the next thing to check?
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Monday, November 17th, 2008 AT 8:51 PM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

Do a current draw test, place an Amp meter between Battery Positive (+) and the cable, check current draw with key off and doors closed, if current draw is above about.15Amps, start pulling fuses one at a time to isolate the faulty circuit, also disconnect the alt as you may have a faulty diode which will cause a drain back, start here.

Mark (mhpautos)
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Tuesday, November 18th, 2008 AT 3:34 AM

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