Unfortunately I have had some water behind my firewall due to a clogged drain. This probably has loaded up and may be damaged the fan. Good news, the drain plug is no longer clogged. Bad news, my fan only works on #5. Any ideas? Possible fuse? May be it will work after drying out.?

Thanks.
Keith

If you have a manual HVAC system, it's classic blower motor resistor. Water leaking in through bad cowling seal, etc. will drip down onto the blower motor, blower motor resistor and wiring. Positions 1 - 4 from the HVAC head unit feeds to the resistor matrix to vary the blower motor speed. In position 5 the resistor is bypassed and the blower motor is fed direct battery power via the HVAC HI speed relay so the blower itself is probably OK.

had the same thing in my 2000 last year...bnaylor3400 is 100% dead on