The engine oil pan gasket can develop a leak. Leaking oil may accumulate on the exhaust system resulting in a burning smell. Replacing the gasket should correct this leak.
Problems for specific Ford Taurus years:
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Most reported 1997 Ford Taurus problems
The magnet for the camshaft position sensor may fall out of its mount and damage the synchronizers. This causes long crank times when starting the engine and may cause the Check Engine Light to illuminate. If this happens, both the magnets and the synchronizers need to be replaced.
The engine may misfire and/or buck while driving at freeway speeds with no fault code stored in the powertrain control module (PCM). This can be caused by an intermittent fault with the camshaft synchronizer assembly. This condition can be diagnosed by monitoring knock sensor data as per Ford service bulletin #05-22-12. Replacement of the synchronizer assembly will be required to correct this concern.
The synchronizer shaft for the camshaft position sensor can cause a loud squeak or chirping noise due to failure of the upper bushing. The noise may be erratic and is usually present when the engine is warm.
The driver side front window "fell" off the track and damaged the regulator.
My check engine light has been on for a few months. Originally when the issue began, a local auto shop machine said that it was oxygen sensors. I recently replaced two and it ran fine for a day. It seems fine when its started but when its in gear, it shakes, and it barely picks up any speed. There is also a burning smell. the second auto report stated that it now need as cam sensor and ignition coil.