[urq] UrQ After run Radiator Fan

[Justin]

Yep, your right....the wiring diagram looked like it did at first..but you
would still need an "after-run" thermo switch.  Tripping a relay off a
injector cooling fan thermo switch would not sevrve as a usful
function....the thermo switch for the injector fan is rated at much higher
temp than would be nessary for an radiator type cooling switch.
If you have access to a wiring diagram, for any 5000 turbo or later 4000
quattro...they all have seperate thermoswitches dedicated for after
functions....probably for a reason...,
Justin
----- Original Message -----
From: "Andrew Finney" <afinney1 at yahoo.com>
To: <cbrooks22 at cox.net>
Cc: <urq at audifans.com>
Sent: Wednesday, April 28, 2004 3:49 PM
Subject: Re: [urq] UrQ After run Radiator Fan


> Justin, the reason the radiator thermoswitches have 3
> pins is that Audi relocated the overheat high temp
> switch down from the line between the bottom of the
> coolant recovery tank to the radiator(where it is on
> my '83 UrQ) to the bottom of the radiator in one
> thermoswitch(where it is on my '84). That third pin
> has nothing to do with afterrun. I believe the
> afterrun get's its signal from a sensor mounted like
> our injector cooling fan thermoswitch on the cam
> cover. The reason I asked the group is that I wondered
> if someone had done an easy swap of a relay or two
> with a jumper wire or some such thing from the
> injector cooling fan thermoswitch. Thanks.
>
> Andrew Finney
> 1983 and 1984 UrQs.
>
>
>
>
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