The Ford Barn

Garychinook · 11-02-2015, 11:26 PM

What Patrick L said. Forget the multimeter ammeter. The "voltage drop" method that Patrick alluded to is the way for a parasitic drain. I don't like using a test light for this type of trouble shooting as it takes full or almost full batt voltage to light it. That being said using the test light and if it lights between the disconnected battery and the cable then you know there is a full batt draw. Proceed logically. Start pulling/disconnecting from the battery and moving schematically out leaving the volt meter connected as before mentioned. Or for the illogical start pulling likely and easy to get to components.

Gary

Ron W · 11-03-2015, 09:14 AM

I had a episode where the dash light was on but I did not notice it in daylight when I shut off the car. Next day; dead battery. Ron W

daveymc29 · 11-03-2015, 10:20 AM

Changed the coil. Seems to run better. will just remove the circuit breaker when off for any length of time. Thanks guys, as always.

11-02-2015, 11:26 PM	#21
Garychinook Member Join Date: Jul 2013 Location: Western WA state Posts: 63	Re: Some draw with key off What Patrick L said. Forget the multimeter ammeter. The "voltage drop" method that Patrick alluded to is the way for a parasitic drain. I don't like using a test light for this type of trouble shooting as it takes full or almost full batt voltage to light it. That being said using the test light and if it lights between the disconnected battery and the cable then you know there is a full batt draw. Proceed logically. Start pulling/disconnecting from the battery and moving schematically out leaving the volt meter connected as before mentioned. Or for the illogical start pulling likely and easy to get to components. Gary

11-03-2015, 09:14 AM	#22
Ron W Senior Member Join Date: Jan 2011 Location: Central Me. Posts: 260	Re: Some draw with key off I had a episode where the dash light was on but I did not notice it in daylight when I shut off the car. Next day; dead battery. Ron W

11-03-2015, 10:20 AM	#23
daveymc29 Senior Member Join Date: Sep 2010 Location: Danville, CA Posts: 1,554	Re: Some draw with key off Changed the coil. Seems to run better. will just remove the circuit breaker when off for any length of time. Thanks guys, as always.