5 star tune / voltage
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Joined: Jun 2020
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5 star tune / voltage
First off I’ve got a 2017 F350 cclb 6.2l.
I’ve noticed recently that my truck seems like when it cranks that it’s starting to get slow like maybe the battery is getting weak. I watched the voltage on my programmer as I driving and it was saying 14.1 - 14.2 so I put my battery charger on it and this morning it was better for sure.
I was curious if something in the tune would draw more from the battery or alternator cause the battery to get drained more? My thought was to get a new alternator and also get a 240 amp rather than the 220 amp that’s on my truck now.
Any info on this would be great. Thanks
I’ve noticed recently that my truck seems like when it cranks that it’s starting to get slow like maybe the battery is getting weak. I watched the voltage on my programmer as I driving and it was saying 14.1 - 14.2 so I put my battery charger on it and this morning it was better for sure.
I was curious if something in the tune would draw more from the battery or alternator cause the battery to get drained more? My thought was to get a new alternator and also get a 240 amp rather than the 220 amp that’s on my truck now.
Any info on this would be great. Thanks
Fleet Mechanic
Joined: Feb 2021
Posts: 1,405
Likes: 1,171
From: East TN
The tune should not alter anything with the truck's charging system. Changing the alternator is an expense that will have little if any return. 4 years on the battery - I'd start with replacing that.
Hotshot
Joined: Oct 2015
Posts: 19,695
Likes: 12,821
From: Wyoming
On my prior truck, slower starts were my clue that the battery was on its way out. A volt meter on the battery at various times (after sitting for a while, while running, etc) is good data to make a decision from. If you have any aftermarket electronics installed, that may be a good place to start.
A well rested lead acid battery will have a voltage slightly higher than 12.6.
A well rested lead acid battery will have a voltage slightly higher than 12.6.
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