JasChen

Dear MK2, because, I am not understand the car so detail, so, would you please let me know the low gas meaning (which gas ?)? Thx very much.

Thx friends, I would like to provide additional information, please help me to evaluate again. 1. This condition is not occurred always, but sometimes. 2. Even this condition occurred when I just start the engine and turn on the AC, if I continue to drive with normal condition, sometimes, it will be back to normal condition. 3. One time, when it occurred, I just turn off the engine then restart again, then also back to normal. please check then give me some recommendations, thx. thx everybody.

Basically, the idle speed of my Lupo GTI is about 800-900rpm, but, if I turn on the air condition, it will go up to 1100rpm, even I raise the rpm by myself (to 2000 or 3000), it will go back to 1100rpm when I loose the accelerator. But, if I turn off the air condition at that time, then raise the rpm by myself again then loose the accelerator,it will back to normal rpm (800-900). Would someone please let me know what is the problem? Thx for everybody!