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Re: mystery coolant leak?
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Posted by thereuare (more from thereuare) on Fri, 21 Nov 2003 12:31:47 Share Post by Email
In Reply to: Re: mystery coolant leak?, Gary, Fri, 21 Nov 2003 10:22:54
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When did you replace the T-stat last? This is what caused the mystery leak in my case as the housing wasn't clean enough to create the tight seal that is necessary. The problem for me was that 95% of the time i never saw coolant on the ground since it burned off before hitting floor!

If you have an AutoZone near you, try the coolant pressure tester kit that you can get for free (just leave a deposit, they'll give you deposit back when you return the part). The problem is that Saabs require an adapter for the tool to fit properly over the expansion tank. I was able to work around this by taking the rubber seal on the pump and working it to the inside of the expansion cap (i used a pen to push the last bit of rubber down). Then while pushing down to keep the pump sealed against the expansion tank, i slowly pressured the system and the leak became VERY apparent. If you don't push the pump down firmly against the expansion tank, the pressure will cause it to blow off and then you have to try to re-seal the rubber piece again and start over.

Since the device doesn't fit as well as it should without the adapter, you may want to have one or two helpers around, one person to hold the pump down against the expansion tank, another to pump the tool to pressurize the system, and another to look around the engine compartment to identify the leak. If no body is available you can probably wing it yourself, but just easier with another set of hands or two. Bently advises not to exceed 17 lbs of pressure, but i didn't need to get too close to that number.

Good Luck.

posted by 68.193.225...

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