1998 BMW 740 smog check

1998 BMW 740
75,000 MILES • V12 • 2WD • AUTOMATIC
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ILAMPARK
  • MEMBER
  • 1 POST
I am having some problem with smog check on this car. This car is running great, but it failed the first time. What do I need to do pass smog test?
Catalyst covrerter was replaced 2 years ago.
Let me know.
Feb 4, 2008 at 10:52 PM
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DOCHAGERTY
  • ✓ASE Certified Mechanic
  • 9,606 POSTS
  • ASE Certified Mechanic
you did not state why it failed. if the visual passed then it probabaly needs both precat 02 sensors replaced.
Feb 14, 2008 at 7:24 PM
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