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Date: Tue, 24 Jan 2006 18:44:19 GMT
From: Paul Halliday <pjghnospamyonder.co.uk>
Subject: Re: '88 900S head gasket?


in article BFFC24A8.6FF%pjghnospamyonder.co.uk, Paul Halliday at pjghnospamyonder.co.uk wrote on 24/01/2006 18:38: > in article 8KlBf.30250$jd5.2037nospamdc02, James Sweet at > jamessweetnospamail.com wrote on 24/01/2006 08:40: > >> The car is an '88 900S 16V, my girlfriend was driving and said it >> started to overheat today while sitting in traffic but didn't get up >> into the red and went down when the car was moving at a decent speed. >> Tonight I checked the coolant and discovered it a bit low, added about a >> quart and checked it out, car seemed to be running just fine. Checked >> the oil and uh-oh, white milky crap on the dipstick. Am I right to >> assume the head gasket has blown or is there anything else on these cars >> that's likely to cause that symptom? Are there any tricks or tips I >> should know before digging into this? I've done a number of head gaskets >> before but never on a Saab. Do I need to replace the head bolts or any >> other parts or should I just get a top end gasket set and replace >> anything I disturb? > > Along with a compression test, have the coolant chemically checked for the > presence of oil/petrol. > > If it checks out okay and you have good compression, then I'd start to look > at (a) the coolant and (b) the radiator. Do a full coolant change and flush > the engine through. There are ways to do half the job, but do the full job > :) Feel the radiator when warm (careful not to burn yourself) to see if > there are any cool spots. Over the years, all manner of crap builds up in > the coolant and has a habit of settling in the radiator. Especially, if > you/former keeper has dropped in one of those Radweld products :( > > Of course, it could be a stuck thermostat ... Still warm? Change the > radiator. You'll be amazed at the difference. Sorry ... Forgot to say ... If it does turn out to be a failed head gasket, then don't worry. It's not the big deal on C900s that it is on other cars. Perhaps drive the minimum you need to in order to have the various suggestions checked out. Catch the job quick enough and it's literally, pull the head, change the gasket and pop the head back on with no need for all that skimming and strip-down. While the head is off, it's good to have a cursory look over chambers for signs of abnormal wear and impending failure :) Paul Vart tog vägen vägen? SAAB : Nothing on earth comes close

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