Why does the main pulley belt drive of my isuzo crosswind XT rotates intermittently slow when i turn ON my ACU?
Q&AAsk Your Question
2001 Isuzu VehiCROSS
Question: The main drive pulley rotates slow when ACU is on
Answer #1ZeeTech November 19, 2010, 18:28Master
I guess you are talking about the crank shaft pulley. There is a layer of rubber between the inner and outer part of the pulley to damp vibration. The outer part (the belt drive) might be separated from the inside part and when there is more load on the pulley, it starts turning.