Best of Deals Car Reviews Repair Shops Cars A-Z Radio Show

Fan Switch

I have a 2003 Ford F250. The fan switch doesn’t work on the first 2-3 settings - only on high. Can anyone suggest what would cause this and where I might look to try to fix the fan? Thanks.

Your resistor block is probably damaged. The resistor block is used for slower speeds, but by-passed for high speed. These are usually located near the blower fan. Should look like this:

Thank you! I’ll check that out.