Crazy electrical problem
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Cargo Master
Joined: Nov 2005
Posts: 2,767
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From: East Tawas, MI
Nothing crazy here. The pulse of the dashlights is directly related to the Charger you have hooked up.
To test the theory, disconnect both batteries and charge them 2 amp until full.
Clean every ground and positive terminal right down to the starter.
After the batteries are fully charged, have them load tested.
I agree with ICE above, it's free, easy, and after the procedure you'll be shocked at how much faster it spins up and it will make life easier on every electrical component on the truck.
Denny
To test the theory, disconnect both batteries and charge them 2 amp until full.
Clean every ground and positive terminal right down to the starter.
After the batteries are fully charged, have them load tested.
I agree with ICE above, it's free, easy, and after the procedure you'll be shocked at how much faster it spins up and it will make life easier on every electrical component on the truck.
Denny
Cargo Master
Joined: Oct 2007
Posts: 2,712
Likes: 107
From: BoCoMo
no locktite on relays, please.
You said it was running. Still flashy lights with charger unhook?
Why are you charging your batteries? Time to test each battery individual (unhooked) with a bubble tester and load tester?
You said it was running. Still flashy lights with charger unhook?
Why are you charging your batteries? Time to test each battery individual (unhooked) with a bubble tester and load tester?
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Fleet Mechanic
Joined: Jul 2010
Posts: 1,753
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From: Los Angeles, Ca.
When you find a loose connection that's causing issues you should remove and clean it instead of just tightening it down, there's often corrosion and/or some burning that'll keep it from having a good connection even when tightened. I've actually seen where a connection gets worse after being tightened.
And the locktite was a bad idea, it's very likely to insulate. Start at that relay, it might be all that's wrong.
And the locktite was a bad idea, it's very likely to insulate. Start at that relay, it might be all that's wrong.
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You guys nailed it.
I was a little sceptical about locktite being the problem since it started fine after the application, but it must have become an insulator once it fully cured.
Disconnected, cleaned with POR15 cleaner, sandpaper and brass brush. 9mm bore brush also helpful on the nuts. Also cleaned the ground point on the body that connects directly to the neg battery cable. That was heavily corroded. Battery posts and lugs. Everything was shiney enough to eat off of. Started right up.
thanks all
Start
I was a little sceptical about locktite being the problem since it started fine after the application, but it must have become an insulator once it fully cured.
Disconnected, cleaned with POR15 cleaner, sandpaper and brass brush. 9mm bore brush also helpful on the nuts. Also cleaned the ground point on the body that connects directly to the neg battery cable. That was heavily corroded. Battery posts and lugs. Everything was shiney enough to eat off of. Started right up.
thanks all
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El Campo
1999 - 2016 Super Duty
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Aug 3, 2015 10:24 PM