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just failed emissions on 92SC400 what to do?

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Old 11-19-04, 03:02 PM
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VSsc400
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Default just failed emissions on 92SC400 what to do?

1992 SC400 V8 Automatic
104769 miles
Stock cats (still good)
replaced O2 sensors at 60k (all 4)
plugs, rotors, caps timing belt, water pump, fuel filter, air filter, injector cleaning all done at 90k
car was runing for 1 hour and 15 minutes idling before inspection

Inspection data
HC PPM 111 limit 75 failed
CO % .24 limit .40 pass
NOx PPM 494 limit 875 pass

what do I do now?
Old 11-19-04, 03:43 PM
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VVT-i
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You got high HC, so check the EGR system. The EGR on the SC400 is located on the left side of the intake. Sometimes the carbon bluided up inside the intake chamber and slow the flow of the EGR gas.

You can remove 4 12 mm nuts that hold the EGR valve to the intake and inspect/clean up the carbon.
Old 11-20-04, 11:07 AM
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MGS4
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Old 11-20-04, 11:35 AM
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joshthorsc
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Originally posted by MGS4
Does that actually work?
Old 11-20-04, 05:53 PM
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aliga
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ny or ct emissions?
Old 11-23-04, 02:56 PM
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Nutech
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Originally posted by MGS4
lmaof
Old 11-23-04, 05:16 PM
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ARISTO*7
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Originally posted by aliga
ny or ct emissions?
if it is NY then you can just pay off shops.. thats what i used to do with my civic
Old 11-25-04, 04:25 AM
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TTEHarrier
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Originally posted by MGS4

Last edited by TTEHarrier; 11-25-04 at 04:26 AM.
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