Re: Lose an entire expansion tank of coolant from bad cap? - Saab 900 Bulletin Board - Saabnet.com
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Re: Lose an entire expansion tank of coolant from bad cap?
Posted by Russell Giuliano [Email] (more from Russell Giuliano) on Tue, 21 Jan 2003 12:31:56
In Reply to: Lose an entire expansion tank of coolant from bad cap?, thereuare, Tue, 21 Jan 2003 11:49:39
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When my thermostat blocked, it would back up and blowout the entire expansion tank, however temp was almost into the red on the guage.
My 87 ( now awaiting stripping) put me through all sorts of overheating problems. Since I suck at diagnosis, but I'm handy with a wrench, it was cheaper to keep replacing parts until it ran fine.
Heres what I replaced, (in order)
1: A/C switch in upper hose(auto parts gave me the thermo-fan switch by
accident)
2: Hose from expansion tank to water pump
3: water pump
4: expansion tank (twice, first one from junkyard, second one was new, they developed pinholes)
5: cooling fan
6: radiator
7: thermo-switch
8: thermostat & lower temp thermo-switch (finally) used lower temperature t-stat, finally ran real cool, only 1/3 on the guage, fan hardly comes on at all
Still losing coolant.
After taking trog's advice , I let car sit for 4 hours after ride to work, opened cap, and heard a "whoosh" of air, telling me the head gasket needs attention. It is the last possible thing that could be wrong. The excess pressure in the system from the head gasket caused one leak after the other.
I wish I had tried the t-stat first.
Oh well, you live & learn....and spend in the process
posted by 141.153.14...
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