Well I recently replaced my starter, maybe a week ago. My car started fine and everything was in working order. Until yesterday and today I drive my car and I noticed the ABS lights flashes and sometimes stays on for abit than goes away. While at the same time, on red lights my cluster lights go dim, when i accelerate the lights go light back up....what could be my problem ? Its annoying!! Oh and also my AC on full blast it acts weird when i accelerate the AC blows harder, when i let off gas the AC blows less. WTH ????

 

Check your belts, specifically the one that drives the alternator. It could be loose and slipping, or your alternator itself could be on its way out. Grab a voltmeter and check your system voltage while it's happening.

Check your battery connections, it's possible a cable or both were left loose after the starter replacement, which would also affect system voltage.