87 5Ktqw Radiator Fan - again

[Paul Meyers]

I have 2 87 5kcstqs. On one the cooling system behaves as your case a (half
way), the other behaves as case b (3/4). Otherwise they seem to function
about the same. I haven't found any adverse effects to the 3/4 behavior,
though. It's been this way since I've had it. The radiator is perfect, a
new, 85 degree thermostat, etc. I haven't been able to find any problems
with the cooling system either, except that it runs hot.

Paul Meyers


-----Original Message-----
From: Steve Sherman [mailto:spsherm at attglobal.net]
Sent: Sunday, June 30, 2002 8:58 PM
To: quattro
Subject: 87 5Ktqw Radiator Fan - again

Thanks for the replies to my previous Q.

The fan runs when the relays are shorted out, and when a jumper is
placed on the right terminals of the connector that goes to the rad temp
sensor. So the relays and fan wiring are OK.  I guess the only question
I have left is, is that rad sensor working right?

As I recall, with the old rad and sensor, the fan would come on with the
engine running and the dash temp gauge just a bit over the 1/2 way
mark.  With the new rad and sensor the fan does not come on until the
dash temp guage is up to the first dot before the 3/4 mark.  Quite a
difference.

Does this sound right?  Did my old system just run the fan sooner?  I'd
appreciate hearing from some others who might have paid close attention
to the fan start points, where on the dash temp gauge does your fan
start working....

TIA