Hi, I have had an annoying noise coming from the dash for a while on the Zaf (1999 1.8) and decided to have a look today, found the problem to be right at the bottom of the heater system in the middle of the car is what looks like a motor with pipes going into it, I think its what controls the temp in the cabin as the noise changes pitch when you select different temps. Question is how do you replace that motor (if it is a motor) whats it called? Is it DIY able?
Thanks in advance