Question about Saturn L-Series

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The car missfired. We put in new coil pack, new plugs, but car still miss fires. The exahuste pipe after cat. getting red hot. The car also smells as if its running rich and both fan motors are on. Check engine light is on and falshes. Cleared all codes and check engine light comes back on again, saying a misfire.

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Replace the O2 Sensor and if that doesn't fix it your going to have to start replacing the stuff Identified by the codes. Most likely the Catalytic converter is bad and the Crank Position sensor. If the Crank Position sensor is sending faulty signals then it will cause misfires, the O2 sensor causes the motor to run rich, the Catalytic converter will become overheated if your running too rich or it is damaged or partially blocked.

Posted on Dec 29, 2010


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Posted on Jan 02, 2017


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