voltage drop at idle

Z06gette

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#1
as the title states my voltage is dropping at idle, the turbo timer shows it go from 14.2 down to sometimes as low as 11.6v at idle... IVe posted previously wondering about the hunting idle and chalked it up to lexus afm and 550cc injectors. BUt now I have observed the idle hunt precisely when the voltage drops... I did an alternator test at work and it test out good. Any help or suggestions?
 

hvyman

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#2
id suggest checking the alternator output at idle when it drops on the car. should show high 13 to 14v at the alt post. if it does when it drops them check the small power wire on the positive terminal.
 
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Z06gette

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#3
I’ll check into that I did notice that little power wire looked somewhat corroded