[Healeys] Electric Draw

Per Schoerner per at schoerner.se
Fri Jun 7 06:54:02 MDT 2019


It sounds more like your cutout switch is the culprit here.

Per

Skickat från min iPhone

> 7 juni 2019 kl. 14:47 skrev R. Lindsay <050.rpl at gmail.com>:
> 
> For the past few weeks I have been fighting a parasitic draw on my BJ8. It was running about .48 amps and would drain my battery in a day or so. I was told by a mechanic that a diode in my alternator must have blown therefore causing the draw. He also mentioned that my ground wires in the boot were loose which he tightened. I brought the car home, turned off the power in the boot and 2 days later the battery was dead. 
> 
> So, here’s what I’ve done. I jumped the battery and started the car and ran it for 10 minutes. I disconnected the charger and tested the battery - 12.48 volts. I then removed the cutoff switch and bolted the grounding wires together. I tested for a draw and got a zero reading. That was last night. I went out this morning (12 hours later) and the battery reads 12.33 volts. 
> 
> My questions are 1. Is .15 volts a reasonable drop in voltage for a sitting car in 90 degree heat and 2. Can a diode in an alternator work sometimes and not at others. If it’s either “good or bad” all the time, I guess I need to presume the alternator is not the source of the draw. If a .15 volt loss over 12 hours is reasonable then removing the cut out switch in conjunction with presuming the alternator is good (as it works fine now) solved my problem. 
> 
> What does the wisdom of this great resource think?
> 
> Price Lindsay



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