1984 Fiero failed Aircare
Printed From: West Coast Fieros
Category: Technical Topics Forum
Forum Name: Technical Questions and Discussions
Forum Description: Got a technical question about your fiero? ask it here.
URL: http://www.westcoastfieros.com/forum/forum_posts.asp?TID=3210
Printed Date: 21 November 2024 at 11:19pm
Software Version: Web Wiz Forums 12.01 - http://www.webwizforums.com
Topic: 1984 Fiero failed Aircare
Posted By: InfernoFiero
Subject: 1984 Fiero failed Aircare
Date Posted: 09 May 2013 at 2:52pm
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Hello,
I took my Fiero to the Aircare center today, and it passed all tests confidently but one: Oxides of Nitrogen (NOx) ppm. The maximum allowable is 2438 and my reading came to be 2714 -- the average passing reading is 712.50. The only thing I did before the Aircare test was I filled up on some Shell gas -- like 5 minutes before -- I always fill it up with Chevron but today was different since I had a quarter tank of gas. I asked around and learned that the major culprit here may be the Catalytic Converter, but I wanted to gather your opinions and guesses on what the problem may be! Thank you! |
Replies:
Posted By: Rob N.
Date Posted: 09 May 2013 at 3:20pm
| Try changeing the O2 sensor... fixed my 4 cyl & 6 cyl |
Posted By: Colby
Date Posted: 09 May 2013 at 5:36pm
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A malfunctioning EGR valve can cause a higher NOx reading.
------------- 88 Formula 5 speed |
Posted By: beken
Date Posted: 09 May 2013 at 9:11pm
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It wouldn't be the catalytic converter. My car has never failed on NOx. I'm pretty sure the cat isn't working on my car. -------------  Beken (aka Ken) - bekentech@westcoastfieros.com Original and still the owner of an 85SE 2M6 4spd |
Posted By: Patrick
Date Posted: 09 May 2013 at 11:24pm
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Check your ignition timing. Perhaps it's too far advanced.
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