'87 4000 quattro cooling system

David Vanden dvanden46 at gmail.com
Thu Jun 4 18:51:25 PDT 2015

Cool.  Thanks.  That should save me some time looking for something that
isn't there, yet that has probably been my unfortunate strategy all along.
Anyway, I am anxious to get all the new components of the cooling system on
to see if the temperature reads lower.  They have to be delivered first.  I
think it was indeed having some problems because the expansion tank is
actually a little warped and has a tiny crack in it.  And the shop that is
cleaning and fixing the radiator called me today and told me it would take
another day.

On Thu, Jun 4, 2015 at 8:58 PM, Huw Powell <audi at humanspeakers.com> wrote:

> Whoops, I should have remembered that!  Or gone out to the field and
> looked at the Coupe.
> I've just become so used to the 90, I forget the little differences.
> On 6/4/2015 8:44 PM, Jan Pinkowish wrote:
>> David,
>> The cooling fan for the type 85 '84-'87 4kq and CGT 5-cyl does not have a
>> resistor in the circuit to control speed.  It is either off or on.
>> A good modification is to take the ground wire to the fan, cut it,
>> install an inline 50amp fuse using the same gauge wire, and then ground the
>> fan to a big bolt in the engine compartment.  Then, if the fan draws a
>> too-high current, the fuse will blow, you will not get any melted wires in
>> the fan harness, and your car will not burn..
>> ------------------------------------------
>> On 6/4/2015 11:02 AM, dvanden46 at gmail.com wrote:
>>> Well it looks like I am getting the cooling system up to par on this 87
>>> 4000 Quattro. Part of that process is getting the cooling fan working
>>> right.  As it has been brought to my attention that the reason my cooling
>>> fan may only operate in high speed because of the resistor, does anyone
>>> know where the resistor is and what it looks like?
>>> David
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