pls help.m a new member, 5 months ago i took my 93 esi model car into a shop, because when i turned on my aircon/ac on, rpm immediately drops almost 0 rpm, causing vibration. according to them, my acv(aircon control valve) needs to be replaced. however, he tried to clean the valve to remedy the problem. For a while, it worked. there was an improvement, but problems again occur just recently, 5months later. Do you think i need to get the acv replaced?will the vibration on my engine/car lessen? thank you, and looking forward to your comments. Thanks.
dennis
dennis