Last update: 08/03/2005 |
|||
|
Cars affected: All Scorpios with
A/C ( not fitted with Climate Control)
Symptoms: interior fan (blower) runs in switch position 3, it does not operate in positions 1 and 2. Fault: thermal fuse defect In my case, my blower was working normally in positions 1 or 2 and then suddenly it would only work in position 3. Fault description: On non CC fitted cars, the blower is controlled by a set of wire resistors that drop the voltage for two of the positions (1 and 2) which results in the blower fan operating at reduced speed. The resistors are bypassed in position 3 for full speed operation. In addition a thermal fuse is fitted to prevent overheating of the resistors should the fan motor stall. In my case the thermal fuse in the resistor-pack was at fault.
Solution: I purchased a new thermal fuse
from a spares shop for domestic electrical appliances such as coffeemakers and
hot water boilers and soldered it in place of the old one.
Pull it off, you will then see three
connectors. Make a note of their positions (strange behaviour of the blower fan
will result if you mix them up).
Have an ohm-meter and check the resistance of
the thermal fuse. It should be around a short circuit (less than 1 ohm)
indicating that the fuse is intact. Thanks to Ben in the Netherlands for this page
|
||
|
Copyright © 2003 www.fordscorpio.co.uk |
||