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Rich exhaust smell might be due to a failing catalytic converter or the O2 sensors.
If scanning does not show any code, I would suggest getting it on a diagnostic check. You can check all the components and compare the data to see which is not functioning acording to specifications.
Since you have cleaned the FI system, some thing might have gone out of adjustment and some twinkling is needed to set them right.
Guess work usually leads to a lot of unnecessary replacment and repairs.
The O2 sensors are plugged into the exhaust before and after the catalytic converter.
Sunday, July 20th, 2008 AT 1:03 AM