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Old 02-27-2015, 03:41 PM   #1
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Unhappy Coolant reservoir emptying and engine light on

I have a 2002 93 aero turbo with around 110,000kms on the clock. It has been driving well without fault and out of the blue, steam started pouring from the bonnet from the coolant reservoir emptied onto the engine and road. I let the car sit for an hour and refilled the coolant and everything seemed fine however the temp gauge was erratic. Since then it has happened 2 more times and I have noticed the engine light is on. It's scheduled for a service and check up in a few days, anything I should be looking out for that explains this?

Thanks!
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Old 02-27-2015, 04:28 PM   #2
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There are a couple of hoses that feed the coolant reservoir and its plastic and not uncommon that it can develop a crack in it. I would also check the heater hoses and big hoses that go to the radiator.

Are you getting bubbles in the coolant reservoir or does it seem under pressure?
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Old 02-27-2015, 06:13 PM   #3
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fill the tank and start the engine with the hood up to see if you can find any obvious leaks. How where you driving when it first happened? Merging on the highway or cruising down a side street. That would be first thing to do, also what do mean by an erratic temp gauge? If this has already happened a few times I would stop driving the car all together until it gets serviced
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Old 02-27-2015, 06:42 PM   #4
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Quote:
Originally Posted by oliversexpedition View Post
There are a couple of hoses that feed the coolant reservoir and its plastic and not uncommon that it can develop a crack in it. I would also check the heater hoses and big hoses that go to the radiator.

Are you getting bubbles in the coolant reservoir or does it seem under pressure?
I have checked for cracks and leaks but haven't been able to find any, I have noticed some bubbles in the reservoir. I wasn't on the highway when this issue occurred it's just arrived he town and usually erupts when Ive either stopped the car or the car is idling at traffic lights etc.

As for the temp gauge, it usually stays at half way but can dip to almost fully cold and anywhere in between in a matter of 20-30mins.

Thanks for the help guys, I really love the Saab and hope the issue isn't to drastic.
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Old 08-04-2015, 10:19 PM   #5
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Temp guage seems normal. Mine will do the same if you've got the heat on and cruising down the highway at typical saab speeds.

I had my heater core hoses bust on me about 2000 miles ago. Right there where the return line bends to go into the engine, coincidentally also changing size right there. Made a makeshift fix kinda difficult. (Side of the road, no good)

Check all the big hoses. One under the passenger side fog light, and then the big one on top. Heater core hoses are smaller, but they go from where the top rad hose is, to about where the center console is. They're a pair, so inspect both.
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