I'm driving a Proton Wira 1.5(A) 2001. My car is having problem with the engine timing everytime my aircond is on. It was 750rpm without aircond and with aircond it's around 350rpm, which cause my car to tremble greatly when I'm driving 'D' during traffic jam. Currently , I have tweak myself the RPM to 1,000rpm without aircond and 500rpm with aircond. The car still trembles a little with timing coming to as low as 400rpm during idling in traffic jam. I notice that even I manually tweak it to higher rpm, it seems it only works well without aircond. With aircond there is a BIG gap in engine timing, sometimes at 1,200 rpm(without aircond) to 400 rpm(with aircond).
Pls help me!!!
Pls help me!!!