The numbers for 1989 agree with what you and I indicate as a spec of 548.
For my 1992 like I was tested in 2003 with the following
HC limit 58 reading 58
CO limit .32 reading 0.31
NO limit 420 reading 320
In my test in 2006 (it really should have been tested in fall of 2005 but I
took it off the road for winter)
I got the following
HC Limit 50 reading 20
CO Limit 0.28 reading 0.09
NO Limit 365 reading 365
The improvement in HC and CO between 2003 and 2006 was the replacement of
the front Cat.
This year I replaced the second Cat and hope it will help with the NOx. I
have a test scheduled in a week so I will see how things will go.
As you can see I am a bit worried about the NOx readings and hoping the new
cat will bring it down.
See the other email I sent out which explains how to calculate the numbers.
The Specs which I think are just plain wrong (or deliberately skewed) are
for all cars from 1992 thu 2000. Those cars are being tested to specs
equivalent to cars
from 2004+. Cars from 2001 thru 2003 are being tested to levels
significantly looser than what the 92 thru 2000 cars are being tested.
The main thing that bugs me about this is that they are extending the
no-test years for newer cars from 3 to 6 years and proposing that cars
12years or older need testing annually. The reason they say they are
extending the no-test years is that those cars pass 99% of the time. Not
surprising they are testing them to less strict specs than the older cars.
If my car was being tested as a 2001 the limit would be 474 rather than
What did you do to improve your readings? Your NOx were way off
Does your car have an air pump or EGR system. I don’t think the air pump
was required in Canada and mine does not seem to have an EGR valve and no
port on the manifold where one would go so I assume it never had one.
Without an EGR I am not sure how they would control the NOx. All of the
manuals I have show an EGR system.----- Original Message -----
From: “h s law” firstname.lastname@example.org
Sent: Wednesday, October 24, 2007 3:40 PM
Subject: Re: [xj40] Drive Clean - Emission Testing in Ontario (Canada).
In reply to a message from Dave sent Wed 24 Oct 2007:
Hi Dave My last test was 2006 and it was the first it ever failed
after some work it got through with the following readings. RPM
2046. HC ppm limit 50 reading 48. CO% limit0.28 reading 0.26 . The
NO ppm limit 0548 reading 162. The numbers you gave place my car as
a 1989 and the nox at 548 am I reading it correctly. Regards John.
John. Walsh. Purrrrr 89 vdp
bowmanville ontario, Canada
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