Date: Sat, 28 Jun 2008 11:06:46 -0400
Reply-To: "Jack R." <jack007@COMCAST.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: "Jack R." <jack007@COMCAST.NET>
Subject: Re: CA Smog Failed - 1985 1.9L
In-Reply-To: <vanagon%2008062810454344@GERRY.VANAGON.COM>
Content-Type: text/plain; charset="us-ascii"
I failed these things over and over again with my 84 Westy 1.9l back when
Michigan had these tests. I ended up adjusting the AFM to fix my issue, and
get it to pass. Also, tried it on a very warm day, cold day etc.
Good luck!
Glad we don't have these tests in Michigan any longer!
Jack R.
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Walter Houle
Sent: Saturday, June 28, 2008 10:45 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: CA Smog Failed - 1985 1.9L
OK I failed test #3 with high NOx agai. We can rule out timing as the
problem. I will now check the injectors, the O2 sensor, the fuel pump
pressure, and the AFM per our friend Bentley.
However, my mechanic swears that the problem is the catalytic converter.
Since its brand new, I'm not sure I believe him. I got the same one I used
4 yers ago, and that got me thru 2 smog tests sucessfully. Are there
better performing cats out there that will work on CA vanagons? Any
suggestions?
Thanks,
Walter
85 Vanagon 1.9L
On Thu, 26 Jun 2008 19:19:08 -0400, Walter Houle <whoule@ECSCONTROLS.COM>
wrote:
>My van failed the NO part of the CA Smog Test twice.
>I had the van worked on in between so I'm wondering what is causing the
>high NO. The 15 MPH 2200 RPM readings were as follows:
>
>Test 1: %CO2=14.5 %O2=0.6 HC PPM Max=131 Measured=131 CO% Max=0.87
>Measured = 0.37 NO PPM Max=1085 Measured = 1492
>
>I installed a new O2 sensor and a new catalytic converter. Also, a good
>local mechanic found that the vacuum retard port on the distributer had
>been disconnected and that the timing was set at 19 degrees too far
>advanced. They reconnected a vacuum hose to the retard side of the
>distributer and set the timing back to spec. However, it failer NO again,
>this time even worse.
>
>Test 2: %CO2=14.9 %O2=0.4 HC PPM Max=131 Measured=40 CO% Max=0.87
>Measured = 0.04 NO PPM Max=1085 Measured = 2131
>
>The reduced HC & CO readings show me that the new cat and O2 sensor are
>doing their jobs.
>
>What is causing the higher NO reading? Did retarding the timing make it
>worse? Does anyone have any suggestions?
>
>Otherwise, my next move is to remove the vacuum retard hose again, advance
>the timing 19 degrees, and return for Test #3. Since I now have made
>the "Gross Polluter" class, my Max NO limit got bumped to 2050.
>
>Thanks,
>Walter
>1985 Vanagon 1.9
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