[Es2] No radiator fan= wtf?
Miller, Chris
chris.miller at infofoundry.com
Fri Oct 15 17:45:09 EDT 2004
Keep in mind that the temperature sender for the dash gauge is on the
coolant manifold on the head, while the thermoswitch that activates the
radiator cooling fan is on the radiator. If you've got air blocking a
passage and the radiator isn't getting hot, then the fan isn't going to
go on regardless of the dash gauge reading.
The coupe originally had an air bleed screw near the firewall on the
coolant line to the heater core. Unless that line is new, likely the
screw has corroded and won't allow you to bleed the system of air
without damaging the hose and requiring replacement. Since the bleed
screw is there, likely that is the cooling system high point.
Another option is to drive the car to a steep hill, and get the nose up
high. A jack works too. Real high. Then bleed the system with the new
high point (top radiator hose, or lift the overflow bottle up high).
Chris
-----Original Message-----
From: es2-bounces at audifans.com [mailto:es2-bounces at audifans.com] On
Behalf Of livinotte at cox.net
Sent: Friday, October 15, 2004 3:23 PM
To: Es2 at audifans.com
Subject: Re: Re: [Es2] No radiator fan= wtf?
Hi ben
There is one wire that connects to the afterun relay via the engine
compartment to the driver side harness.
http://www.urs4.com/logbook/RS2CQ/wiring/103_0331m.JPG
It's on that black connector. Basically when the after run system
turns on the relay in the engine harness J155. If I remember right.
Sends a signal to the after run relay which triggers the fan. The
interesting this is that on the 7a cars it's triggered via a ground
line. On the 20vT it's triggered via a power feed. I didn't know this
at first and I have a funny feeling I killed the two relays I have for
the afterun system.
Thats not the problem thought. Honest I am not worried about the after
run system. With the car in the garage and idling for a while the fan
should go on at 90 degree celcius. Basically the thermostat opens at 87
degrees and the fan turns on at 90 degrees. Either the thermostat is
not working properly or the fan setup is not working properly however I
tested the fan setup by grounding positions three and 1 and 2 and 1 and
the fan turns on. I also removed the sensor and heated it up and it also
worked.
Either there is still air in my system or my thermostat shit it self on
me. I am going to replace the thermostat when I install the new fan.
Then take it from there.
Off topic.
Are any of you guys familar with how a clutch setup works on a
boxster(mid engine) or 911(rear engine)? Basically I am wondering how it
engages when you push the pedal down.
Thanks
Josh
>
> From: Ben Klumper <bklumper at mdbworld.com>
> Date: 2004/10/15 Fri AM 10:56:59 EDT
> To: livinotte at cox.net, Es2 at audifans.com
> Subject: Re: Re: [Es2] No radiator fan= wtf?
>
> Hey Josh,
>
> Do you have your notes on how you wired the 3b cooling sensors (turbo
> after run, mfts, etc) into the coupe? There might be something that
> was overlooked.
>
> Ben
>
> ----- Original Message -----
> From: <livinotte at cox.net>
> To: <Es2 at audifans.com>
> Sent: Thursday, October 14, 2004 9:56 PM
> Subject: Re: Re: [Es2] No radiator fan= wtf?
>
>
> > Hi everyone
> >
> > I bleed the system again. I am finally getting heat out of the
> > heater
> core. Thats the good news. I didn't run it for long enough to be
> completely satified that everything is in check but it did hold it's
> temp on the coolant gauge and the turbo did not smoke. I am catching a
> cold and I could handle the fever and being in the garage. So I
> figured I leave it at that and hopefully tomorrow I will feel better
> enough to spend more time with the coupe. Once again the fan didn't
turn on at 90 degrees celcius.
> Which has me wondering about stuff. Tomorrow should be the first time
> I use vagscope if I finally can get the router to work properly with
> my sister's labtop. I will attempt to save the log and try to post
it.
> >
> >
> > If you guys read up on S2 forums alot you will notice they mention
> > Castrol
> Rs 10w 60 all the time. I couldn't find it in the states and I now
> found it. It's now called Tws motorsport. You can get it from the
> > Bmw stealerships:
> >
> > Castrol TWS Motorsport 83 12 0 029 683 1-litre canister Castrol TWS
> > Motorsport 83 12 0 029 684 60-litre canister
> >
> > I am currently using mobil 15w60 and it's a heck of alot better than
> > any
> other oil I have used so far. I am hoping the Castrol is even better.
> >
> > Cheers
> > Josh
> >
> > P.S. the place finally shipped out my battery box.
> >
> >
> > >
> > > From: Peter Schulz <pcschulz at comcast.net>
> > > Date: 2004/10/13 Wed AM 10:41:57 EDT
> > > To: <livinotte at cox.net>
> > > Subject: Re: [Es2] No radiator fan= wtf?
> > >
> > > Josh:
> > >
> > > Follow what Mike recommended and wiggle the fan harness to ensure
> > > that
> you
> > > dont have an intermittent connection at the fan.
> > >
> > > I did the write up on 20v.org for the fix...
> > > and PLEASE put a fuse on the fan ground lead ala the 200 q20v
> > >
> > > -Peter
> > >
> > >
> > >
> > > At 01:50 AM 10/13/2004, you wrote:
> > > >Hey guys.
> > > >
> > > >I am having problems with getting the fan to turn on. I
> > > >diagnosed it
> to
> > > >this very simple problem. The thermoswitch in the radiator
> > > >works. I actually heated it up with it connected but not in the
> > > >radiator and it turned the fan on. I ran the car and it gets to
> > > >90c and nothing
> happens.
> > > >My hi 1 speed fan is shot so I have it wired to Hi 2. If I press
...
> ( i
> > > >forgot which button but on the climate control the fan goes on).
> > > >
> > > >Here's my hyopothesis on the problem. I think the thermostat is
> > > >stuck
> or
> > > >broken.Ibelieve it's not opening at all. I believe this is why I
> > > >had
> some
> > > >smoke from the turbo. I ran the motor a couple times but now I
> > > >make
> sure
> > > >the TCP pump goes on and I run the coolant system backwards to go
> around
> > > >the thermostat.
> > > >
> > > >
> > > >Is it possible to remove the theromostat without taking the water
> > > >pump off? Seems like it's possible. I have to replace the fan
> > > >and pull the radiator so I figured I am going to replace the
thermostat too.
> > > >
> > > >I have never seen directions on pulling the thermostat. Easy
enough?
> > > >
> > > >Updates:
> > > >
> > > >I called the place that I ordered the battery box and complained
> > > >and
> they
> > > >said they would ship it out today. Sapposely it had to be built
> > > >and
> then
> > > >be sprayed.
> > > >
> > > >The coupe that I bought has a new fan in it. So I can going to
> > > >pull it
> and
> > > >put it in the "es2" project. Ironically this 214,000 thousand
> > > >mile
> coupe
> > > >has more money put into the "new factory exhaust system" than
> > > >what I
> paid
> > > >for the whole car. I find that to be funny. I took the paper
> > > >work on
> the
> > > >car with me home, even thought I haven't picked it up yet. I
> > > >have to trailer it home because it's got too many typical coupe
> > > >quattro issuses. Funny I sold the crank breather setup to chris
> > > >and this car's breather is completely collaped.
> > > >
> > > >I don't remember but I am hoping the rear tie rods are in nice
shape.
> If
> > > >they are I am going to pull them off and put them on the "es2"
> > > >project which means once I figure out the fan issuse I can
> > > >finally take it for
> a
> > > >test drive.
> > > >
> > > >It's a bit of a struggle as usual. But one not many people get
> > > >to
> enjoy
> > > >like I do.
> > > >
> > > >Cheers
> > > >josh
> > > >
> > > >_______________________________________________
> > > >Es2 mailing list
> > > >Es2 at audifans.com
> > > >http://www.audifans.com/mailman/listinfo/es2
> > >
> > > 1991 200 20v Q Avant Titan Grey
> > > 1991 200 20v Q Avant Indigo Mica
> > > 1990 CQ silver (awaiting S2 transplant)
> > > 1985 4000s Q....black and peeling CC
> > >
> > >
> > >
> >
> > _______________________________________________
> > Es2 mailing list
> > Es2 at audifans.com
> > http://www.audifans.com/mailman/listinfo/es2
> >
>
>
>
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