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NOx Emissions Test Failure 700 1990

posted by  someone claiming to be Jersey Guy on  Fri Jan 2 08:01 CST 2004 [RELATED]

My 1990 740 8valve failed the NJ state emissions test for NOx yesterday. From a quick reading of the information the state gave me and from looking at some information in an IPD catalog, it seems that there are 3 main causes for excess NOx:

Bad catalytic converter

Vacuum system leak

EGR problems.

Does this seem right? How do I tell if my car has an EGR? I know that not all do. Any other advice or tips?

Thanks!






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New NOx Emissions Test Failure [700][1990]
posted by  someone claiming to be Jersey Guy  on Fri Jan 2 08:01 CST 2004 >


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