fan blows only on setting 4?

[WiNgNuTz]

Well it may or may not help you, but I had a similar thing with my old work van...basically the blower decided to stop working in the widdle of minter, and the workshop said it was some kind of resistor that had given up, and so "fixed" it by bypassing it, so I could use the blower heater, but it would only work on max.

As said, probably not really of any actual help, but a cool story nonetheless.