Originally Posted by pj67coll

Sounds like a similar problem one of my brothers cars had. An 84 200. No a/c, just a blower fan. you would start the car and then have to just very slightly turn the key probably about 1mm anti-clockwise to get the fan to come on. Seems like these ignition switches can wear slightly where the circuit for the blower is, which is likely the same circuit for the climate control in the US spec cars.

- Peter.