Hi Tom, hi Volks, On Mon, 1999-04-12 11:58:54 -0700, Tom Clein wrote: > ... > I decided to 'top off' expansion tank with water in an attempt to > quash the flashing LED. The expansion tank (as opposed to the refill tank) has always to be filled up to the rim, and thus you should never be able to top it off. If you are able to top it off, there's gas in the system which should not be there. This gas is either just air, then you're lucky and just have to bleed the cooling system correctly, or its combustion gas, which would mean your head gaskets are leaking. Some shops have test tools to check the coolant for combustion gas residues. > ... > 2. Incorrect composition of coolant solution - see 1 above Sorry, I know that's in the archives, but that's bogus non the less. The sensor in the expansion tank only checks the level, not the composition of the coolant. Hope this helps. Sincerely Rainer '89 Caravelle GL Syncro 16" ---------------------------------------------------------------------- | Rainer M Woitok | Phone: (+49-9131) 85-27811,-27031 | | Regionales Rechenzentrum | | | Friedrich-Alexander-Universitaet | Fax : (+49-9131) 30 29 41 | | Martens-Strasse 1 | Telex: d 629 755 tf erl | | D-91058 Erlangen | | | Germany | Mail: Woitok@RRZE.Uni-Erlangen.DE | ---------------------------------------------------------------------- |
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