I got a 1990 n/a and everytime it warms up and im at a light or just stop the car wants to stall and the volts go down has new battery and alternator what can it be any help would be great.

 

Check that the 2-wire plug on the alternator is plugged in, and that the wire on the B-post is secure. Test the alternator output voltage between the B-post and the negative battery terminal. "New" reman alternators can be junk right out of the box. I've seen it twice.

 

should be outputing more that 12 Volts (not at idel) around 2K somethin like 14,
13.something Volts .if not its Crap same thing happen to me HATE buyin remains

 

Any accessories on (radio, heater, lights, defroster, etc)?