On 7/4/05, jpbeauch <jpbeauch@gmail.com> wrote:
> Hi all,
> 
> Can someone tell me the part number of the above piece. Ss per Bentley's
> manual says, it's located just behind left headlight.
> 
> Seems to be responsabible for my cooling fan only working on high mode.
> 
> I have a syncro 1991 with air conditionning and my understanding is that I
> have a 3 speed fan and that this pice somehow control the fan speed? is this
> correct?
> 
> In The ETKA 6.2 it seems to be called otherwise (series resistor for
> electric fan)
> 
> They list two differents parts number.
> 
> 200/300 watts 251 971 284 E
> 500 watts 251 971 284 H
> 
> Are these the correct parts? If so which one do I need and where to get it?
> 
> JP

JP,

You need 251 971 284 H (the other is for vans w/o A/C).  $29.17 from Bus Depot:

http://busdepot.com/details.jsp?partnumber=251971284H

The ballast resistor drops the voltage sent to the fan to give it a
lower speed.  These burn out after several years, and the symptom is
that the fan no longer comes on a slow speed, which allows higher
temperatures until the fan finally comes on at high speed.

You can test the resistor by removing the plug on the temperature
switch located in the radiator and shorting the connections in the
plug, two at a time.  If the fan only runs in high speed no matter
which two leads you connect, the resistor is bad.

If you need more specifics on the test procedure (wire colors, etc.)
let me know...

-- 
Don in Reidsville, NC
1986 Kawasaki Concours
1988 Vanagon GL (Sylvia)
"Why do they call it a fixed income, if mine is always broke?"