Coolant Loss Update - Saab 900 Bulletin Board - Saabnet.com
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Coolant Loss Update
Posted by Mr. Science (more from Mr. Science) on Wed, 15 May 2002 15:26:09
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I've been watching a slow invisible coolant leak for a while, trying to determine the cause before flushing and replacing my coolant and T/S. In 2 months and 900 miles, I have observed about a 1/2" drop in the cold level of the reservoir tank. I made sure to bleed air when I topped it off 2 months ago. Additional data:
- No classic head gasket signs (this of course is my worst fear). No coolant smell, smoke at startup, rough starts, power loss.
- No noticable bubbling in expansion tank if I stand there and watch as I rev the throttle. However, after a long drive, I have noticed a few bubbles sitting atop of the expanded liquid in the tank.
- I have noticed a drop in coolant level after long freeway drives (hour or more), but never driving around town, even for long periods of time. This is interesting to me because the temp tends to run higher scooting around town. Higher temp -> higher pressure which I expected to magnify symptoms.
I'm gearing up for a cross country drive in July, so this is one of my biggest concerns (especially since I'm seeing loss in long freeway drives) There will be lots of hot weather, big long hills, and stress on the cooling system. I want to make sure I'm good to go.
Any advice? Maybe a weeping water pump is to blame?
Thanks mates,
'Roo
"Kajsa" - '89 900S 4dr - 106k
posted by 128.42.176...
Posts in this Thread:
- Coolant Loss Update, Mr. Science, Wed, 15 May 2002 15:26:09 <-- Viewing This Message
- Many thanks to all, notes taken, will report back! n/m, Mr. Science, Thu, 16 May 2002 22:09:10
- Re: Coolant Loss Update, Russell Giuliano, Thu, 16 May 2002 08:31:39
- Get a compression test done, and have the cooling>>, Tcar, Wed, 15 May 2002 20:46:48
- Re: Coolant Loss Update, Charles, Wed, 15 May 2002 18:45:02
- Re: Gaskets?, MS, Wed, 15 May 2002 18:44:45
- Re: Coolant Loss Update, JohnK, Wed, 15 May 2002 18:27:42
- hoses?, JimBlake
, Wed, 15 May 2002 15:57:12- Re: hoses?, Mr. Science, Wed, 15 May 2002 17:46:42
- Re: Coolant Loss Update, burlyb, Wed, 15 May 2002 15:49:13
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