Volvo RWD 200 Forum

INDEX FOR 1/2026(CURRENT) INDEX FOR 10/2004 200 INDEX

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Passed smog. Yay! 200

The NOx was 10ppm below the limit of 1273ppm, but the CO% and HC were about half of their limits. But, I don't have to worry about this for another 2 years, and the high NOx was probably caused by the combination of idling in front of the test station on a hot day (about 100F) and the fact that I have a "hot" thermostat installed (92C/197F). I know that 240s generally tend to run lean and produce somewhat more NOx than other cars.


-b.







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