V6 thermostat change - Saab 9-5 Bulletin Board - Saabnet.com
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V6 thermostat change
Posted by Craig Talbot [Email] (more from Craig Talbot) on Sun, 20 Jun 2010 19:29:24
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I have a 1999 9-5 V6, and last week the radiator seam burst between the header tank and the core. So I replaced the rad, and all seemed well. Friday I pulled into the garage and after about a min, I hear hissing and smell coolant. I popped the hood and the expansion tank is full and coolant is blowing out the cap. I grabbed my IR thermometer and the top rad hose was showing 122C and I can hear the coolant boiling in the block. Dash gauge showed normal reading, and no warning lights.
It was a cool day, about 15C, cloudy and AC off, so hardly taxing the cooling system. However the temp gauge has been odd for a while, sometimes reading low, sometimes normal. I replaced the thermostat 2 years ago when I rebuilt the top end of the engine after a tensioner failure after the dealer changed the timing belt and not the tensioner.
So I'm suspecting the thermostat is occasionally sticking closed and causing the over heating, since it has only done it twice in a week. Is there an easy way to remove the thermostat without removing the intake manifolds? I'm really beginning to hate this car....
posted by 75.158.15...
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