MAFS question. Should be simple.

[CTS13]

Just to make it brief;

Why does my idle fluctuate up and down and stall when the MAFS is plugged in and has fine idle at 2100 when its unplugged.

[TonkaTruckin]

Your MAF is probably dirty or damaged so your ECU doesn't know how much fuel to throw at it. It struggles to find its happy place because it isn't reading right. And usually when you unplug it (I could be wrong) it goes to a base map. It will run based on what it thinks should be coming into the motor based on the TPS. Find a buddy with a ka and throw his MAF in and see if it clears up..