1992 Lexus LS 400 failed nox emmissions

Tiny
FLD 120
  • MEMBER
  • 1992 LEXUS LS 400
  • V8
  • 2WD
  • AUTOMATIC
  • 141,000 MILES
I drove to echeck it was very hot 90 degres and very humid. On the way, this never happened to me before, I hit the throtle and it hasited and after that it drove normally. They hooked the car up it passed the first two tests but the third test which was nox it failed. What could the problem be?
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Sunday, July 20th, 2008 AT 2:29 PM

1 Reply

Tiny
KHLOW2008
  • EXPERT
Hi fld 120,

When you fail NOX test, it means the catalytic converters are due for replacement.
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Sunday, July 20th, 2008 AT 2:38 PM

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