[s-cars] leaking coolant

[Kevin Campbell]

Thanks for your help.  It was the hose that comes out of the thermostat housing.  What a pain to get to.

-----Original Message-----
From: Gabriel Caldwell [mailto:gabriel at ts.bc.ca] 
Sent: Thursday, April 22, 2004 3:19 PM
To: Kevin Campbell; s-car-list at audifans.com
Subject: RE: [s-cars] leaking coolant

I hear the after-run pump likes to leak a lot.  In my experience I have seen leaks from the coolant level sensor connection at the bottom of the expansion tank and from the water fitting on the head.  In both cases I never saw a pool of coolant because it only leaked when the pressure in the system was high and when it did leak in ran down and hid in the subframe.  A really close visual inspection following all the coolant lines helped me find the problems.

Gabriel Caldwell

-----Original Message-----
From: Kevin Campbell [mailto:kevin.campbell at autodesk.com] 
Sent: April 22, 2004 3:12 PM
To: s-car-list at audifans.com
Subject: [s-cars] leaking coolant

S-car Gruppies,

 

I sustained a coolant leak sometime yesterday and have yet to track it down.  The coolant leak indicator clued me into it.  I only need drive several miles before it comes on.  When I go to check the coolant tank it is always about ¾ empty (I imagine this is where the sensor is.)  Then I refill.

 

Anyway, I see no detectable leak under the car.  Should I check for the leak while the car is hot and running?  Are there any common leak areas like the coolant bottle or the hoses running to the bottle?  I don't have a compression tester either.  I need to go to Tahoe tomorrow.  I don't want to fill the trunk with bottles of anti-freeze for the trip (I've convinced my wife I drive a "fine" automobile).

 

Any suggestions would be greatly appreciated.

 

Kevin

94 S4

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