Battery Ground find.
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Senior User
Joined: Oct 2010
Posts: 440
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From: Ft Worth
Battery Ground find.
We have been having an issue with weak starts. Never failed just sounded weak. This weekend I found that my Drivers side battery ground had High resistance, like 6 Mohm. I took the connection off the frame and found that it had built up dirt and grime and wasn't making a connection. Cleaned up the ground reconnected everything and all is good again (.05 ohms which is about as good as my meter gets). Sounds better when starting now. 
I wonder how long it has been like this. Had to be a VERY long time. Probably what killed my first set of batteries. Only one battery doing all the work. Plus probably why I have had some Alt problems also. 
I wonder how long it has been like this. Had to be a VERY long time. Probably what killed my first set of batteries. Only one battery doing all the work. Plus probably why I have had some Alt problems also.
Posting Guru
Joined: May 2013
Posts: 1,199
Likes: 2
From: Oklahoma
Great tip! I guess I need to trace out my grounds and check them out to see how clean they are.
On another note, I have plans to upgrade my charging system with larger charging and grounding wires in addition to adding a high output alternator. Guess I could work on all of this at one time!
On another note, I have plans to upgrade my charging system with larger charging and grounding wires in addition to adding a high output alternator. Guess I could work on all of this at one time!
Thread Starter
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Senior User
Joined: Oct 2010
Posts: 440
Likes: 0
From: Ft Worth
Great tip! I guess I need to trace out my grounds and check them out to see how clean they are.
On another note, I have plans to upgrade my charging system with larger charging and grounding wires in addition to adding a high output alternator. Guess I could work on all of this at one time!
On another note, I have plans to upgrade my charging system with larger charging and grounding wires in addition to adding a high output alternator. Guess I could work on all of this at one time!
Elder User
Joined: Oct 2013
Posts: 715
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When i get a new car first thing i get is 0g wire and redo all the charging wires and ground in the engine with it. Helps so much. Alt to battery. Alt case to engine and engine to frame and frame to - on battery. If u run off road lights u will see a differance
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