Parasitic draw. Nothing is worse than electric problems with your vehicle. Nothing. Nope…not even that….or that. Electronic problems top the list. Okay, I googled it and electric problems weren’t even on the list on some sites. It’s numero uno on my list so let’s run with that.
In this installment I set out to the source of my parasitic draw. Seems like this is a common issue with older cars and British cars in particular. This is not the first time for me. A few episodes ago I diagnosed a possible failed alternator. When the diode pack fails in an alternator it can lead to dead batteries.
I currently have the alternator isolated so I know my issue isn’t that. I setup the multimeter in series with my battery and got it placed on the windshield so I could watch the setting change.
I started with 1.9 amps of draw. I pulled every fuse in the fuse block to no avail. I then started on the auxiliary fuses under the passenger seat. There is a row of covered fuses, I check all those. There is also two fuses stuck on the side. Turns out one of these was the culprit. When I pulled the red 10 amp fuse the draw dropped to .01 amps.
I have 4 manuals and one of them had the fuses identified. This fuse was the fuel pump. Now that’s a bit of a puzzler. The fuel pump is OFF when the key is off. I spent a lot of time thinking about it. And I didn’t come up with anything. I’ll need to look at the electrical circuit and see what comes up. I’m also going to call JagGuy and get his take on it.
This is part 1 of I’m not sure how many parts. As many as it takes…
This weekend was the Marine Corps’ 249th birthday. I give a shout out to my friends and family who were Marines. I also gave a shout out to all the veterans in my family. There were a bunch.
Marines, my grandfather William Alvy Stephens served during the Banana Wars after WW1 and my uncle Ben Johnson on my mom’s side served during Vietnam. I also served with several friends who also served with me in the USMCR and went on to retire, MGySgt Jason Rogers, USMCR (ret.) and Col. Mike Gann, USMC (ret.). My friend Howard McKinnis also served in the Marine Corps during Vietnam. My wife has several cousins who also served and retired from our beloved Corps.
I come from a long line of veterans. Both my dad and uncle served in the Navy. Another uncle on my mom’s side served in the Navy. My cousin Victoria retired from the Army and she had a son who also served in the Army. My cousin Dan served in the Air Force and a son of his served in the Navy. Many of my Great Uncles served during WW2 in the Merchant Marines and in the US Army Air Corps. Brave men one and all. I’m sure I could go on to name all my cousins who are married to military men but I’ll stop here.
Thank you for your service to our great nation.
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