Battery FYI
Hotshot
Joined: Dec 2014
Posts: 17,827
Likes: 3,111
From: Jersey Shore
If they are venting that much, you might want to get checked out for overcharging.
Lead Driver
Joined: Feb 2005
Posts: 7,928
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From: The Great State of Texas
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Mountain Pass
Joined: Aug 2006
Posts: 239
Likes: 59
I really want to do Jack’s Wiring Upgrade. Every time I look at it my brain reminds me why I’m a roofer and not an electrician.
Hotshot
Joined: Dec 2014
Posts: 17,827
Likes: 3,111
From: Jersey Shore
The first you should do is to add an 8ga negative wire from the drivers battery terminal to the FICM/PCM ground bolt, and you could also add another from there to the secondary PCM and all the other major components at the firewall. That ensures the PCM, FICM, Trans, and fuel pump have low resistance.
Cargo Master
Joined: Nov 2015
Posts: 3,422
Likes: 935
From: Fort Worth, TX
I have Battery Tenders wired into both batteries but my truck lives in the driveway so they only get plugged in during cold nights-not too often in DFW, Texas.
I really want to do Jack’s Wiring Upgrade. Every time I look at it my brain reminds me why I’m a roofer and not an electrician.
I really want to do Jack’s Wiring Upgrade. Every time I look at it my brain reminds me why I’m a roofer and not an electrician.
Fleet Mechanic
Joined: Sep 2006
Posts: 1,491
Likes: 295
From: Fresno, CA
Data point for everyone. I finally bought a battery tester like Jack uses which somehow calculates CCA capacity without putting a big load on the battery. Both of my 3-year old Motorcraft batteries were at 660-680 CCA so I decided to replace. Went to Walmart on recommendations from here but they didn't have any group 65 850A batteries in stock. Plenty of 650 & 750. Even tried another Walmart and the same. Odd because online said they had them in stock for $130/each. So I decided to buy at Napa. Got their Napa "Legend" for $160/ea. Both tested out around 1075 and the truck cranks WAY faster than with the old batteries.
The battery tester has a "cranking test" where it will monitor the voltage drop during cranking. Won't even register as the voltage doesn't drop below 11.0 during cranking. Had to check it with my multi-meter to confirm. Thus far I'm happy. Well my wallet isn't happy as I need new tires as well but at least the truck is happy...
Napa Batteries: https://www.napaonline.com/en/p/BAT7...pressionRank=1
Battery Tester I purchased:
The battery tester has a "cranking test" where it will monitor the voltage drop during cranking. Won't even register as the voltage doesn't drop below 11.0 during cranking. Had to check it with my multi-meter to confirm. Thus far I'm happy. Well my wallet isn't happy as I need new tires as well but at least the truck is happy...
Napa Batteries: https://www.napaonline.com/en/p/BAT7...pressionRank=1
Battery Tester I purchased:
Hotshot
Joined: Dec 2014
Posts: 17,827
Likes: 3,111
From: Jersey Shore
Take note of the batteries resistance and watch that over time.
There are a lot of things that are getting in delay mode.
There are a lot of things that are getting in delay mode.
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Mountain Pass
Joined: Aug 2006
Posts: 239
Likes: 59
The first you should do is to add an 8ga negative wire from the drivers battery terminal to the FICM/PCM ground bolt, and you could also add another from there to the secondary PCM and all the other major components at the firewall. That ensures the PCM, FICM, Trans, and fuel pump have low resistance.
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Mountain Pass
Joined: Aug 2006
Posts: 239
Likes: 59
Lol I’m great at ordering stuff online.
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Mountain Pass
Joined: Aug 2006
Posts: 239
Likes: 59
My brand new driver side battery is already building a mound of corrosion around the positive terminal.
It’s never generated so much so fast.
I also noticed a dime sized spot of electrolyte seeping out from under a cap on the passenger side battery-also brand new.
I know they aren’t getting hot. It’s November and December Texas weather.
It’s never generated so much so fast.
I also noticed a dime sized spot of electrolyte seeping out from under a cap on the passenger side battery-also brand new.
I know they aren’t getting hot. It’s November and December Texas weather.
Cargo Master
Joined: Nov 2015
Posts: 3,422
Likes: 935
From: Fort Worth, TX
The corrosion is caused by gasses leaking out around the terminals. If I had brand new batteries causing serious corrosion, you can bet the farm I would try getting them exchanged. They may tell you to pound sand since they're replacements for warrantied batteries, but its worth a shot. The only thing you can do to stop or minimize the corrosion is to slather grease all over the terminals and cable clamps. The only way I know of anyhow.
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