Originally Posted by ameyam
When I pressed the aircon button, the engine would get loaded and the green light would come on but there was no cooling.
After some time, once I reached the highway and went past 50-60kmph, I pushed the button again and there was immediate cooling.
I had a similar issue with my old 800.
The problem was, MASS filling the wrong AC gas! actually they did a top-up and mixed the gas (my car had old CFC type gas). so the AC would work for some time (engine will get load) then cooling would stop. After some time if we switch on the AC button it will again cool, then stop
Sometimes no cooling at all.
So when i took it to a friend's garage, he emptied the AC gas, and re-filled with new type (non-CFC) and voila, the cooling was back with renewed vigor.
And to top it all my car started returning awesome FE (28 with AC Highway) + the engine load was minimum.
That was one service which left me happy for a loooong time!