Date: Fri, 09 Jul 1999 10:33:29 -0500 From: Bob Charlap <bobcharlapnopsamet.com> Subject: Re: Boil over problem
This is a multi-part message in MIME format. --------------9DCD4C89D43E3D02C67F8C06 Content-Type: text/plain; charset=us-ascii; x-mac-type="54455854"; x-mac-creator="4D4F5353" Content-Transfer-Encoding: 7bit I had the same problem on my '88 900T and took it to a local mechanic who claimed to know everything about Saabs. He also tried to tell me it was a blown head gasket! I decided to bight the bullet and take it to the Saab dealership and was delighted to find out it was only the thermostat!!!! Before you blow $1000 on a major repair get a second opinion from the experts! my 2 cents worth, Bob Charlap "George F. Johnson" wrote: > Robert Brown wrote: > > >Can you explain "boil over" in a bit more detail - i.e. is there a large > >surge in > >gases from the coolant when you remove the resevoir cap? In that case you may > >have > >exhaust gases being pressed into the coolant via a leaking head gasket or > >cracked > >head. A mechanic can analyse the coolant for traces of CO to confirm this. > > > >If your problem is due to the above, there is often a slight increase in > >coolant > >temperature (due to high temp of exhaust gases), and the radiator fan should > >start > >coming on sooner than you'd expect. Have you confirmed that your fan is > >starting > >up as it normally has done? A broken fan or thermostat switch is a common > >cause of > >cracked heads on the 8V (I have had bad fan -> cracked head on my 1983 99). > >Since > >you report _no_ increase in temp, then the problem can be due to something > >else > >instead. > > After turning off the engine, the coolant begins to rise in the reservoir. > Soon it begins to boil up through the hose and then overflows the reservoir. > Enough coolant will be expelled so that the reservoir is empty when the car > cools down. The cooling system seems to be functioning properly otherwise. > The fan will come on as usual and the gauge reads normal. Occasionally in very > hot weather the gauge has read on the high side but never has it gotten into > the red. The leaking head gasket/cracked head (I hope not) idea sounds like a > possibility. I will check it. Thanks for the info. In the meantime, any > other ideas are appreciated. > > George F. Johnson --------------9DCD4C89D43E3D02C67F8C06 Content-Type: text/x-vcard; charset=us-ascii; name="bobcharlap.vcf" Content-Transfer-Encoding: 7bit Content-Description: Card for Bob Charlap Content-Disposition: attachment; filename="bobcharlap.vcf" begin:vcard n:Charlap;Bob tel;pager:214-213-1300 tel;cell:214-213-1300 tel;fax:214-553-0099 tel;home:214-828-0011 tel;work:214-553-9100 x-mozilla-html:FALSE org:FIX-IT-IN-POST Productions adr:;;854 Creekridge Drive;Dallas;Texas;75218;United States of America version:2.1 email;internet:bob2nopsamie.com title:Chief Mischief Maker x-mozilla-cpt:;3 fn:Bob Charlap end:vcard --------------9DCD4C89D43E3D02C67F8C06--
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