1996 isuzu rodeo problems again

My car ('96 isuzu rodeo) has just been back on the road after I had to replace the clutch system on it. now after about 180 miles of driving it, I was driving and the 4wd light and battery light come on and flicker when I know for a fact the 4wd is not on. Also my AC decided to stop blowing air when I’m at a standstill meaning that it only blows when I’m coasting and not pressing on the accelerator. Any ideas on how to fix this stuff?