Thank you,  Mark D and Matt P

Once you mentioned resistor I rechecked the Bentley schematics.
I found the fan set up of my 90 was listed on the Digifant 86-89, 450 watt
radiator fan scheme.
Now, that makes sense.  I do recall seeing some decrepit large resistors
behind the head light bracket during my light upgrade.  I'll give it a try.
--At least I wont be lying on that protruding tab on the spare tire retaining
cover.

thank you,
chris c
wisconsin
----------------------------------------------------
mark drillock wrote:

> Your fan resister is likely bad. It lives behind the driver's side
> headlight. It is a large green current limiting resister with 3 wires to
> it. Only used for lower speed fan operation, high speed puts direct
> power to the fan.
>
> List venders sell them.
>
> Mark
>
> populuxe wrote:
> >
> > My 90 multivan seemed to have a hi & lo speed last year, at some point
> > last summer only the loud or high speed has been turning  on (--the one
> > that scares people in drive threws).
> > I checked out Ken W's procedure at vanagain(jumpering at radiator sensor
> > with 3 connection plug).
> > Yes--the hi/loud speed terminal will turn on but the low terminal wont.
> > I have checked at the motor.  one brown ground. ok .  And this is what
> > puzzles me--two reds that junction together on the (plus)terminal stud
> > on motor.  I applied 12v from batt to each of the reds.  both run it at
> > High speed(as I then find out they are connected).
> > I am more familiar with a.c..motors than this d.c.
> > Bentley not very helpful.
> > What test steps should i take next.
> >
> > Thank you,
> > chris c
> > wisconsin