4kcsq cooling problems (somewhat long)

[Teri & Jeff]

I noticed that an after market thermostat for my V8q did not have the brass
vent with the stainless steel check ball.  I promptly returned it and got
the OEM.  The vent also needs to be installed up.  Don't have a clue if this
applies to a 4K.

> -----Original Message-----
> From: quattro-admin at audifans.com [mailto:quattro-admin at audifans.com]On
> Behalf Of ben swann
> Sent: Thursday, June 26, 2003 1:36 AM
> To: Tapparoo at aol.com
> Cc: quattro at audifans.com
> Subject: 4kcsq cooling problems (somewhat long)
>
>
> I had a He!! of a time getting one of my 4kqs to bleed properly, and
> thought I had a major cooling system problem.  Probably the best thing
> to try is the bleeder bolt at the top of the rad.  even that didn't
> seem to work the first time, but eventually, I got the system to take
> all the coolant in an burp out the air.
>
> I don't know if the coolant system flush/cleaner I put in helped, and I
> had flushed the system several times, but didn't get any garbage out.
> Just seems that sometimes they can be difficult to bleed.
>
> Ben
>
> [from: Tapparoo at aol.com
> Date: Mon, 23 Jun 2003 23:33:46 EDT
> Subject: 4kcsq cooling problems (somewhat long)
> To: quattro at audifans.com
>
> --
> [ Picked text/plain from multipart/alternative ]
> Ok, nothing fancy with this getup, just a stock system.  Drained out
> old,VERY green fluid, filled with water from garden hose, then ran
> until the fan cameon.  No problem, acted normally.  Then I changed the
> thermostat, hookedeverything back up, filled with water again.  This
> time, system only accepted about3 liters (capacity is 8), heated
> rapidly, fan turned on late, expansion tankstarted to fill up, then I
> heard this awful clicking noise.  Shut off car,heard gurgling and
> hissing, then expansion tank dropped way below minimum level.
> I used pentosin in distilled water to fill after I changed thermostat.
> Iknow it doesn't mix with green stuff, so I drained out system again,
> thinkingthat I "lost" a few liters of old green stuff in system
> somewhere and pink andgreen were having problems. Filled with just
> water again, did same thing.
> Next, maybe thermostat was in incorrectly.  Opened up, thermostat in
> correctly, but I rotated it 180 deg. just in case.  Now heats up
> rapidly, only takesabout 3 liters, fan does not turn on, expansion tank
> does hissing and gurglingthing again.
> Checked thermostat, opens at 87 C like it should.  Is pump bad? (worked
> fine24 hours ago) expansion tank bad?  What in the hell is going on
> here?
> Major thanks in advance.
> Dan]
>
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