Saab 2003 93 se misfire
Started a few weeks ago as a misfire when
the engine was cold and operating at low
rpms in any gear (1.5k-2.3k rpms).
Intermittent misfire would come and go at
random intervals. Then the Saab check
engine light came on and it showed to be
an emissions leak. That light would also
come and go daily. Sometimes it would
come on, sometimes it wouldn't. Now my
fuel mileage suddenly dropped from around
26 to 11.
Po455 was code.
saab may have a cold start valve electric controlled from feedback of temp. sensor one or other may be bad
Id check your E.G.R Valve
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