my69_coupe

im new to the mustang and car repair world i have a 69 coupe and it just started idling rough not in park or neutral its when i am in drive and i come to a stop. its almost like it is surging and almost dying out.when im actually driving its fine and its ok in park and in neutral.....any suggestions?

eviljeanyis

Check vaccuum lines and sources. For cracked, missing, incorectly installed hoses.