Bernd D. Ratsch wrote:
> Yup...letting it idle for too long actually cools the cat down. Part of the
> test is to run the engine at 2500rpm for 2-3 minutes to allow for complete
> system warm-up (cat mainly but also to put the older systems into closed
> loop operation).
I looked in to it, and found a government report that said the test
includes a 30 second warm-up cycle in the summer that increases to 90
seconds in the winter.
The suggestions about running it on the highway to heat it up are good,
but unfortunately the truck sat in the parking lot in 35 degree weather
for an hour before they even touched it. And I even had an appointment.
> If all maintenance was done properly and it still didn't pass, what were the
> actual readings on the CO, O2, CO2, HC, and NOx?
Apparently Ontario doesn't test all of those levels. Here's what the
report says...
Driving Test
------------
HC ppm: 83 (Fail), limit 52
CO %: 0.42 (Fail), limit 0.29
NO ppm: 1078 (Fail), limit 735
RPM: 1792 (Valid)
Dilution: 14.8 (Valid)
Idle Test
---------
HC ppm: 115 (Pass), limit 200
CO %: 0.51 (Pass), limit 1.00
NO ppm: N/A
RPM: 612 (Valid)
Dilution: 14.1 (Valid)
Thanks.
-- Jason Bleazard http://drazaelb.blogspot.com Burlington, Ontario his: '95 Dakota Sport 4x4, 3.9 V6, 5spd, Reg. Cab, white hers: '01 Dakota Sport 4x4, 4.7 V8, Auto, Quad Cab, black
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