Help Me Preserve My Repurtation

[L DC]

Paul, did you figure out why the fan was kicking in at
such low speed, which as you said was much lower than
the normal low speed fan, as controlled by the fan
switch?

Two years ago, I had a similar incident in my VW QSW
and was quite possible the culprit in your daughter’s
car.

The culprit: Loose fan wires at the fan switch
connection on the radiator. A loose connection of the
wires to the fan itself would also cause the same
problem. 

Back then, upon popping the hood of my car, a
burning-wire smell emanated right from under the
radiator where the fan switch is located.

Power was being supplied still but because the
connection was very loose, the fan turned very slow
and the connection at the fan switch was overheating
because of power overload. 

As I pulled the wires off the fan switch, a little
flame lit up, destroying both, the female spades and
its plastic casing.

Fellow listers, please correct me if I'm wrong on this
one.

Here is what I think:

I believe the two hot wires connected to the fan
switch in my QSW (same as in the 5KTQ) carry the same
amount of power to the fan.

A resistor regulates (located on the fan bracket in my
car) the power on one of the wires to run at lower
speed, which equates to the lower temperature setting
on the fan switch.

Then second hot wire does not have a resistor hooked
up to it, thus, full power is applied to the fan.

Now the question is:

Would a failing resistor cause a lower than normal low
fan speed?

By the same token, I think a failing resistor would
cause high fan speed to kick in at the lower
temperature setting on the fan switch.  

-Regards,


Louis
 

--- Paul Caouette <paxnobis at gmail.com> wrote:

> Audifans,
> 
> Last week my daughter's 90Q (20v) started
> overheating so I volunteered to
> "fix it."
> 
> Now I've been preaching troubleshooting to her since
> she could walk into the
> garage. "Always start with the simplest solutions
> and work towards the most
> complicated.It saves you lots of effort."
> 
> I drove the car in witht the guage a bit past center
> and popped the hood. No
> fan....Hmmm. That's simple. Then I reached in and
> gave the fan blade a
> spin......The fan began the run but at very low rpm.
> Lower than even the low
> setting on the two stage fan.....Hmmmm. Looks like
> it can't be the
> thermostat 'cause it either on or off. So I forget
> my own lesson and spend
> the next three days removing the fan motor. In the
> process I broke off the
> plastic stem that connects the expansion tank to the
> radiator and had to
> drill and tap the hole for a metal insert. I finally
> get the fan out after
> wrestling with the shroud and discover on the benck
> that it works just
> fine....&%$*@&!
> 
> Just before putting the shroud back in I discover
> that the engine mount is
> broken so I spend another night replacing that.
> 
> Tonight I tell her, "You have to help me
> reassemble." And she does.
> 
> We had a great time but like all my work I alway
> seem to have an extra nut
> or screw left over. I made light of it and told her
> it always happens and
> not to worry.
> 
> We start up the car and everything works fine. Even
> the metal stem!
> 
> "See," I said, "You don't ever need all the parts
> they put on a car."
> 
> Wwe drop it off the jacks and she backs it out
> slowly. As the car backs out
> there on the floor is a bracket. She stops the car
> and gets out. I pick up
> the braket and we both contemplate it. It is
> something I can't recall
> removing and I can't for the life of me figure out
> what it is...or where it
> fits.
> 
> Katherine is now reluctant to drive the car..and I;m
> reluctant to admit that
> I might have really screwed up.
> 
> Perhaps one of you might have access to the parts
> fiche (or DVD) and help me
> with botha aname and an idea as to where it might
> fit
> 
> The number on the backet is 443419857A.
> 
> Any help would be appreciated..... although perhaps
> I should maintain that I
> am a dummy so she won't be asking me to fix her
> car...ever again!
> 
> 
> Paul
> In Dnever
> '83 TQC
> 89 200 wagon
> 90 20v q
> 1998 A4 Avant
> (
> _______________________________________________
> quattro mailing list
> quattro at audifans.com
> http://www.audifans.com/mailman/listinfo/quattro
> ---
> Watch this space for ads :)
> 


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