Question about Saab 900
You are describing a major coolant(anti-freeze) leak. Look for the
source. Did engine temperature start to climb before the noise? Was
the engine at operating temperature(if yes, rules out stuck shut
thermostat)? White steam could have been sucked in from under the hood
in through the air vents,
If coolant is on floor inside car, look at heater core or hoses leading to it for leaks.
If coolant is on ground, look at upper and lower radiator hoses, heater hoses, radiator, coolant expansion tank. Less likely: water pump. Least likely: freeze out plugs.
Causes: hoses and or hoses may be old (car is 12 years old-have they ever been replaced?)
Posted on Jan 24, 2009
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