New to forum, but as most newbies, straight in with a question...
I have an 06 plate 1.9 CDTI 150 (recently purchased), when I press the aircon button, the revs dip, the engine cooling fan comes on as far as I can tell the compressor engages.
But my question is whilst driving with the air con on at constant speed the car seems to judder, as if Iím tapping the accelerator, is this how the aircon works on an Astra ? Is it the cooling fan coming on, going off ? and does the aircon really drain the revs that much ?
Any help is appreciated as Iím new to the car and not sure.