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Low voltage on cold start

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Old Apr 2, 2019 | 05:21 AM
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Low voltage on cold start

Hey everyone I have literally been picking my brain and reading the forums on here. I have an 03 f350 6.0 and I have low voltage on cold starts and sometimes warm up. I have a sct x4 scan gauge brand new interstate batteries bought in pair 65 group. New up graded 6.4 starter, when I bought the truck it has dual alts! So I know the secondary is on bottom and primary is on top. Can I buy a high out put like 180 or 140 and still use the secondary? I really don’t want to change all the wiring! What’s the safest way to go here? Please help!
 
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Old Apr 2, 2019 | 03:28 PM
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Welcome aboard!

Often, the "New Member Introductions" forum gets skipped by the folks who can answer these types of questions, in favor of helping in the other forums. For this, you might want to try the "1999 to 2016 Super Dutys" forum for more information.
 
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Old Apr 3, 2019 | 04:12 AM
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