MIke D Posted February 5, 2004 Report Share Posted February 5, 2004 Is there any way to manually (computer) adjust the voltage of my 93 STS. I have a modest radio in my car and after frying the last alternator I decided to add a capacitor. Now a few months later it seems like I am having issues again. Running even just the heat and headlights at idle my voltage drops to 11.4 ish. Get rolling and it will slowly come back up to about 13 volts (city driving). If out on the highway with everything on and radio turned up... I will stay around 13 volts. But as soon as I stop... voltage drops and will take a few miles to get back over 12.6 Also my RPM's are around 750 at idle. Any way to manually set it around 1000 to help this? Thanks in advance MD Cop didn't see it, I didn't do it! 93 STS 225,000 Miles 99 STS 111,000 Miles Link to comment Share on other sites More sharing options...
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