Well if anyone remembers I had an alternator failure, ended up replacing the alternator and battery. Well at idle when I applied the brake pedal, my interior dash lights, headlights, etc would dim. If the blower is on high it will slow. Sometimes they recovered and sometimes they did not and would stay dim until I released the brakes. I said the heck with it and swapped out the new alternator for another unit (Hitachi). The lights are still dimming at idle. And like I said sometimes the alternator will recover and other times it will not.
I can understand if there is a very heavy load on the alternator, but even if I have the interior lights on only, apply the brakes, the interior lights will dim.
I took it to a good mech he said everything was fine and that the voltage drop is normal at idle. This is the first car that I have had, that when at idle the alternator has trouble putting out enough power.
Anyone have more ideas?
Thanks, Matt
1996 Subaru Outback wagon