Mines doing something similar. Infact when driving you can kind of feel it "engage" also the air is cool....not cold.
Idle speed is steady around 650 without a.c., maybe a touch lower when the compressor runs
Many things to check but start with the AC pulley, bearings, next even the tensioner and related pulleys could be worn out. This little bit more power needed when turning on the AC would cause this . At times the simplest things could be a larger problem. A lot of folks never think of replacing the tensioner and both pulleys ( which can be bought as a set )
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.