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Too rich on acceleration....failed emission test 200

posted by  a Volvo believer on  Tue May 22 10:50 CST 2007
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last visit: Fri Nov 29 22:36 CST 2013
[RELATED]

Hi,
My state, Wisconsin, gave me a graph showing the exhaust gases throughout the drive cycle (idle, acceleration, cruising, deceleration, back to idle). The problem with my 1989 (non-turbo) 240 is that the CO%, HC, and NOx spikes way too high upon any acceleration. At any other point in the drive cycle it is within emission specs. Any ideas on what parts I might need to test or replace.
Thanks,
Dan





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