The idle speed varies quite a bit on mine when the air-con is on. Can be anywhere between about 700rpm to 1000rpm. The alternation is accompanied by an audible 'click'. Presumably this is when when the compressor cuts in and out of operation.
Yes mine sits at about 800rpm when idle then rises to almost 1000rpm when the aircon cuts in and goes up and down with the aircon going off and on.
Only noticeable when the x's is sitting stationary :thumbs:
HI the engine speeds up to power the air con compressor. this is only noticable when at rest if the speed is around 30mph or above there is no increase in fuel used most think that the air con uses lots of fuel.myth....so when you are on the open road the mpg is not much greater if at all.... :thumbs: