Northstar Engines and System Technical Discussion Discussion, voltage question in Cadillac Engine Technical Discussion; dashboard info shows 13.5 volts while driving but quickly drops to around 12 at idle...
Automobile(s): 2001 DTS, 04 Grand Am GT,07 Cobalt(Dont Judge,My fuel Saver)
Re: voltage question
Yes i agree with maeng9981, i Drove jake 97 eldo, and he had an aftermarket alternator, and if you didnt shoot the rpms to 5000 as soon as you fired it up it wouldnt charge at all! even driving on the highway all of a sudden everything gets dim check your voltage and was about 12.1, throw it in neutral and shoot it to 5000 again and you were good to go for a little while, if you can spare the extra money get a Factory Replacement! its worth every penny seeing as it is about a 1-2 hour job for a novice northstar mechanic.