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Ideas on a 3 amp parasitic drain???

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Old Sep 21, 2016 | 05:52 PM
  #1  
86FyrBrd's Avatar
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From: Quakertown, PA
Car: 1992 Camaro Z28 Convertible Z03
Engine: 383 SuperRam
Transmission: 700R4
Axle/Gears: 2.73
Ideas on a 3 amp parasitic drain???

I have a 3.14 amp drain killing my battery. Pulled every fuse in the panel by the OBD port. No fuse panel behind the kick panel like some mention. Trunk light not stuck on (removed bulb too), under hood light not stuck on (also removed bulb). Pulled the cigarette lighter out...Still there

I have no idea where to go from here.
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Old Sep 21, 2016 | 06:13 PM
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8t2 z-chev's Avatar
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From: belle fourche,s.d.
Car: '82 z28
Engine: L83 5.7
Transmission: 700r4-1985
Axle/Gears: 3.42 posi
Re: Ideas on a 3 amp parasitic drain???

3.14 amps pretty substantial drain...That is about what the alternator would draw if the field was staying on with engine not running-could check that out.
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Old Sep 21, 2016 | 06:17 PM
  #3  
86FyrBrd's Avatar
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Joined: Jan 2001
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From: Quakertown, PA
Car: 1992 Camaro Z28 Convertible Z03
Engine: 383 SuperRam
Transmission: 700R4
Axle/Gears: 2.73
Re: Ideas on a 3 amp parasitic drain???

Just found that suggestion on google and checked it, came back here to report and saw your reply. That's exactly what it is. I disconnect the alternator and it reads .010. Guess its got a bad alternator.

Also in checking it the alternator is a little warm and the car hasn't run since yesterday. Had a battery charger on it for an hour today and I guess its still warm from that.
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Old Sep 21, 2016 | 08:03 PM
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From: Tracy, CA
Car: '87 IROC
Engine: LB9
Transmission: TH700R4
Re: Ideas on a 3 amp parasitic drain???

A defective diode trio inside the alternator will draw power. It allows battery power to pass through the diode and into the windings draining the battery pretty quick.
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