Date: Sun, 12 Apr 1998 11:57:15 -0700
Reply-To: Old Volks Home <jim@OLDVOLKSHOME.COM>
Sender: Vanagon Mailing List <Vanagon@vanagon.com>
From: Old Volks Home <jim@OLDVOLKSHOME.COM>
Subject: Re: 84 CA Vanagon Smog questions
In-Reply-To: <Pine.HPP.3.96.980411193957.16676A-100000@monet.artisan.cal
poly.edu>
Content-Type: text/plain; charset="us-ascii"
At 07:40 PM 4/11/98 -0700, Ely Kumli wrote:
>I just took my 84 CA model in and it failed smog:
>
>2372rpm measured allowable
>35 180 hc ppm pass
>1.21 1.20 CO% fail
>2.3 02
>12.9 CO2
>
>idle 923 rpm meas allowable
>236 150 ppm hc fail
>1.79 1.20 % CO fail
>9.2 O2
>7.5 CO2
>Are the above smog limits correct? I saw someone else with a 90 and the
>limit was 240ppm hc, I've also seen 250ppm hc. It would not surprise me if
>the shop I went to used the wrong values. Thanks much in advance.
************************************
Ely -
Below is a repost to the list of my smog test on my 84 last July when I got
it on the road. The catalytic converter makes a BIG difference. The O2
sensor is only part of the whole puzzle, because it measures the exhaust
BEFORE it hits the cat. You'll find that the CO levels go way down with a
new cat installed, but to be safe, make sure the CO adjustment has been
done on the AFM (Air Box) and measured correctly as per Bentley. The CO
adjustment screw affects IDLE CO measurements only - has nothing to do with
the CO levels at high rpms - that's handled by the fuel pressure, fuel
injector and cat converter department and their relative conditions of
course. To bring HC levels down, it's recommended that you have an oil
change done before testing. Old oil brings the HC levels up.
And Ron's price for the cat is the best out there.
Standards for California on my 84 Model is as follows:
2500 RPM TEST (2692rpm):
HC 180 Max (Mine was 38) ppm
CO 1.20 Max (Mine was 0.01) %
IDLE TEST (958rpm):
HC 150 Max (Mine was 41) ppm
CO 1.20 Max (Mine was 0.01) %
O2 was 0.20 % although there is no Man/Min Standard (yet)
CO2 was 14.8% although there's no Max/Min Standard (yet)
This was my 2.1 tested at 1.9 (1984) standards. Had a new O2 Sensor and
New Catalytic Converter, which I'm sure helped.
Not sure what the standards are in other parts of California (if they are
different) using the dreaded Smog II system (required with a
dynamometer). Where I live, it is not yet required (Northern Calif.), so
we're tested under the old Smog I system.
Jim Thompson
84 Westy 2.1 * 62 Beetle * 90 Fox Wagon
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