
Originally Posted by
dobemarbia
Hi joyluck, I had the same 12R engine in my toyota silver edition years ago. The carb cleaner you used might have "cleaned" the carburetor but i still suggest that you have an experienced mechanic overhaul your carburetor. Purchase a repair kit and have the mechanic replace all the jets.
As for the the engine idle going down to 200 RPM when the aircon is turned on, I think you would need to adjust your idle speed to around 900 to 950 RPM. This engine is not equipped with a vacuum actuator that increases idle speed when the aircon is turned on.
It is quite normal that idling drops when headlights are turned on due to the extra load in the alternator.