1994 Toyota Corolla

1994 TOYOTA COROLLA
95,500 MILES • 4 CYL • FWD • AUTOMATIC
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MADMONROE
  • MEMBER
  • 2 POSTS
Hi,

Recently, I took my vehicle for inspection and it failed for OBD/Emissions in NJ. The score was 1261 against the standard of 1242. I want to fix it up and take it for reinspection.

I'm hoping to fix it my self and looking for your help.

Thanks
Apr 11, 2009 at 2:35 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
What did it failed on?
Apr 11, 2009 at 2:40 AM
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MADMONROE
  • MEMBER
  • 2 POSTS
Hi Bob, Ken and all of the 2CarPros team,

Thanks for the prompt response.

It failed on NOx - The standard is 1242 but my vehicle score 1262
Apr 11, 2009 at 3:00 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Either the engine is overheating or the EGR valve is not opening -when it does this there's no recirculation involves and combustion temperature will exceed 2500F therefore oxides of nitrogen will formed . Its job is to reduce the formation of NOX
Apr 11, 2009 at 10:17 AM
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