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Cobra Forums
The Terminator
Engine/Tuning
Voltage dropping at WOT pulls. Need Help!
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<blockquote data-quote="MalcolmV8" data-source="post: 14169220" data-attributes="member: 8854"><p>OP typically when these cars data log low 12s high 11s for battery voltage under WOT 99% of the time it's an alternator problem. I've personally had alternators that put out mid 11s under WOT. At night you could even see the headlights dim when you went WOT.</p><p></p><p>My current setup, auto parts store life time warranty alternator, with stock pulley and stock lower puts out around 13.1 ~ 13.2 volts at WOT and around 13.6 in normal driving. I'd say your 12.7 is pretty close and decent. When you get closer to 12.0 or mid 11s I'd be worried.</p><p></p><p>BTW - I do have upgraded grounding cables from the motor the frame. Instead of that little steel braid I have 4 gauge cable. I also have an upgraded heavy duty cable from the alternator to the distribution fuse box next to the battery.</p></blockquote><p></p>
[QUOTE="MalcolmV8, post: 14169220, member: 8854"] OP typically when these cars data log low 12s high 11s for battery voltage under WOT 99% of the time it's an alternator problem. I've personally had alternators that put out mid 11s under WOT. At night you could even see the headlights dim when you went WOT. My current setup, auto parts store life time warranty alternator, with stock pulley and stock lower puts out around 13.1 ~ 13.2 volts at WOT and around 13.6 in normal driving. I'd say your 12.7 is pretty close and decent. When you get closer to 12.0 or mid 11s I'd be worried. BTW - I do have upgraded grounding cables from the motor the frame. Instead of that little steel braid I have 4 gauge cable. I also have an upgraded heavy duty cable from the alternator to the distribution fuse box next to the battery. [/QUOTE]
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Voltage dropping at WOT pulls. Need Help!
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