# AFR electircal fuck up problem

**URL:** <https://forums.speedlife.net/t/afr-electircal-fuck-up-problem/153979>\
**Category:** SON240sx Automotive\
**Created:** [April 26, 2010, 3:16am UTC](https://forums.speedlife.net/t/afr-electircal-fuck-up-problem/153979 "2010-04-26T03:16:30Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![team\_DA](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/team_da/32/5531_2.png) [@team\_DA](https://forums.speedlife.net/u/team_DA)\
**Post date:** [April 26, 2010, 3:16am UTC](https://forums.speedlife.net/t/afr-electircal-fuck-up-problem/153979/1 "2010-04-26T03:16:30Z")

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So…

When driving during the day my wide band will say…13. But if i turn on any kind of electrical load eg…lights, heater, defog or any high current draw, the AFR drops down to say…10, which is way to rich and fucks the tune up. I have a little race battery which is fucked. Maybe thats it. Could it be the voltage regulator? Also i have a power FC. I havent really looked in to this because i said fuck it last fall and wait to spring. Has anybody experienced this before?

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**Author:** ![Specialedition](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/specialedition/32/5714_2.png) [@Specialedition](https://forums.speedlife.net/u/Specialedition)\
**Post date:** [April 26, 2010, 4:16pm UTC](https://forums.speedlife.net/t/afr-electircal-fuck-up-problem/153979/2 "2010-04-26T16:16:45Z")

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Try upgrading your alternator its not producing enough voltage to support your guages and so on. Or maybe buy a capasitor for extra electrical support