Re: [Chrysler300] 300F smog test correction

["Warren R Anderson" <wranderson@xxxx>]

>Just a small correction on the information I sent recently. The second set
>of figures should be at 25 mph and not 15 mph. The 2 tests were run at 15
mph
>and 25 mph.


The Federal IM 240 test is loaded mode and uses a segment of the old, old LA
4 test driving schedule (also part of the FTP) and very expensive CVS
(constant volume sample) equipment that allows grams per mile exhaust gas
constituants evaluation. The Federal certification numbers are GPM. Quicky
test, gross polluter ID, numbers are spot check volumetric; percent, parts
per million etc. Car may look great with spot check; my propane '56
International does but I would fully expect would be a terrible gross
polutter with a CVS analysis.

With the future advent of OBD III in vehicles, roadside driveby telemetry
equipment will use the onboard vehicle computer to check emissions. You will
then get a fail, fix notice in the mail if needed. Until then, and even
after for older vehicles, we will continue to flounder around coming up with
in-use vehicle serveilance testing programs that cost a lot and do little.
JMHO.

Warren Anderson
Sedona,AZ