1995 Honda Prelude smog test

Tiny
NAVYUCXLA
  • MEMBER
  • 1995 HONDA PRELUDE
  • 4 CYL
  • 2WD
  • MANUAL
  • 238,000 MILES
Before I spend 75 bucks for an assessment and then maybe 300 bucks for a repair that may or may not work, can you tell me what could be the cause why I failed my smog test. I recently bought a 95 Honda Prelude VTEC and the previous owner said he changed out the Catalytic Converter and O2 sensor in April, yet the results show a Gross Polluter and the NO reading was 1952 (max can be 704). It also has a cold air system. Help please.
Monday, September 8th, 2008 AT 8:29 PM

1 Reply

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi NAVYUCXLA,

High Nox reading is consistent with a catalytic converter failure.

Is there any other issues such as Check Engine Lamp showing or performance related.

Was the replaced cat converter and O2 sensor OEM or aftermarket?
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Friday, October 3rd, 2008 AT 9:02 PM

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