Mk 4 Fiesta Drive Belt Noisy / Heater Stays On

[manol01]

Good morning everybody, the drive belt of my fiesta is very noisy and my heater stays on all the time even i close the heater levers. Any ideas?

[PubeHeed]

Definatly see about getting the drive belt tightened. I had the same problem with my drive belt and soon as it was tightened the car ran fine. You running low on power?

[Magenta]

I'm afraid I don't know the answer to your heater problem but would be interested to hear any ideas. I'm not sure how it works these days. Years ago the temperature lever/knob actually operated a valve in the hot feed to the heater matrix but on later cars I've had, the lever simply moved a flap to divert the hot air and the matrix was fed all the time. With the advent of aircon/climate control I'm not sure just how the system works on our cars, I would be interested to know.

[manol01]

Good morning to all, Alan you have right, and in that way i intend to move....the story goes like this....i look the whole system more closely and found a electronic board with the heater levers goes on it and a flow control valve. With my few knowlege about electronics i check both the board and valve and see unfotunately that both of them are dead. Therefor i decided to change the filosophy of the system and make it like old days.

[manol01]

As far as it concerns the tension of the drive belt is pretty good but the problem still exist.