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Discussion Starter · #1 ·
My 96 Saab 900 Turbo after running for a while will heat up (but never overheats) and burna oil as I occasionally see white smoke coming out of the exhaust and smell oil burning out of the muffler, and I sometimes see smoke coming out from underneath the hood, I had too much anti-freeze in the motor causing it to spill out of the overflow tank and on to the motor but have since then removed a majority of it which has helped quite a bit. My engine temp gauge only shows the temp at half way between cold and hot.

My question is, what could possible be wrong that is causing these symptoms? ie: smell of oil burning (occasionally) out of the exhaust and smoke occasionally coming from under the hood, the smoke coming from both the hood and exhaust is not by any means excessive and thick. Also my radiator fan does not currently work, how much could that contribute to the motor heating up too much?
 

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My 96 Saab 900 Turbo after running for a while will heat up (but never overheats) and burna oil as I occasionally see white smoke coming out of the exhaust and smell oil burning out of the muffler, and I sometimes see smoke coming out from underneath the hood, I had too much anti-freeze in the motor causing it to spill out of the overflow tank and on to the motor but have since then removed a majority of it which has helped quite a bit. My engine temp gauge only shows the temp at half way between cold and hot.

My question is, what could possible be wrong that is causing these symptoms? ie: smell of oil burning (occasionally) out of the exhaust and smoke occasionally coming from under the hood, the smoke coming from both the hood and exhaust is not by any means excessive and thick. Also my radiator fan does not currently work, how much could that contribute to the motor heating up too much?
When was the thermostat last changed out? If its smoking the turbo charger might be on the way out.
 

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Discussion Starter · #3 ·
A thermostat can cause all the trouble? - I am positive it is not the turbo as it was just completely rebuilt and seems to be in excellent running condition. Could it be anything else besides the thermostat?
 

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A thermostat can cause all the trouble? - I am positive it is not the turbo as it was just completely rebuilt and seems to be in excellent running condition. Could it be anything else besides the thermostat?
A bad thermostat could lead to other problems, over heating, blown head gasket, coolant overflowing.

You might want to do a compression test. And check the turbo.
 

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1. Fix your radiator fan. Any time you are driving in traffic (low speed) your engine is getting too hot. You can do damage.

2. Compression test dry, then wet. Maybe cold, then hot too.

3. Oil smoke from under the hood could be from the PCV system (blowback) if you have bad rings or a PCV problem. See if you can figure out where it smokes from.
 
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