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Registered
Join Date: May 2004
Location: DC/NC
Posts: 812
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Another emissions thread...
Hi all
Just got back from the emissions stations. Bad news the '87 failed. HC passed so did CO% The only failure was NO. Below are the readings ------Limit---Reading---Result HC----130------52------PASS CO----.80------.46------PASS NO----957-----1333-----FAIL In the past when I failed with my other cars all readings were bad. Generally a new cat and an O2 sensor would cure the problem. From the results I am inclined to blame the chip. From what I understand high NO readings are mostly caused by advanced timing (which is exactly what the chip does) Being that the HC and CO readings are well within norm, my guess is the O2 sensor is doing it's job. I changed my oil right after our dorki run last weekend. Plugs, air filter, fuel filter, etc were changed about 4-5 months back. Always run on 93 octane fuel. Is there anything else I may be missing?
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911 |
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10-13-2004, 10:00 AM
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Registered
Join Date: Mar 2001
Location: Marysville Wa.
Posts: 22,468
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borrow a computer and try again.
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https://www.instagram.com/johnwalker8704 8009 103rd pl ne Marysville Wa 98270 206 637 4071 |
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10-13-2004, 10:02 AM
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Join Date: May 2004
Location: DC/NC
Posts: 812
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I posted on the local board to see if anyone would swap for a day...
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911 |
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10-13-2004, 10:29 AM
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Registered
Join Date: Dec 1999
Location: Novato, CA
Posts: 4,740
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Could be a bad cat too. That's what they replaced on my 92 Grand Caravan w/ 3.3 when it failed NO.
Cheers, Joe |
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10-13-2004, 11:55 AM
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