Hi All,
I've searched everywhere for info on my problem and have found mainly info on bad blower resistors, corrosion etc. I've had my dash apart and decided to fix my lack of high speed fan setting. Positions 1 &2 are fine. I've checked the resistors near the blower motor and al seems fine. Checked for corrosion etc with no luck. I even went to the effort of checking the fan switch by shorting the terminals in the switch socket. Once again 1&2 and the air con on/off circuit are fine. No high speed. Hmm next check will be for continuity of the wire between the switch socket and the terminal near the resistor. Has anybody else had this problem? Its a 1988 County V8 by the way.