Ranger inspection and emissions comparison
Posted: Sat Feb 15, 2014 1:03 pm
Good news! The Ranger passed safety and emissions at Tire Pros. There also was no mystery bulb replacement. While I was picking it up, I saw them performing a ball joint lube job on a GMT-800 GMC Yukon. I like seeing that because front end lube is the kind of a thing a shop can easily say they did, save 10 minutes and charge the customer anyway. But onto the main post content:
Here's a little historical comparison of all of the emissions test results I have for the Ranger.
2/22/10 @ 74,139 miles
HC 0.39 / 3.88 GPM
CO 0.56 / 59.97 GPM
NOx 0.46 / 4.09 GPM
2/17/12 @ 87,402 miles
HC 0.25 / 3.88 GPM
CO 1.23 / 59.97 GPM
NOx 0.82 / 4.09 GPM
2/15/14 @ 87,852 miles
HC 0.42 / 3.88 GPM
CO 3.01 / 59.97 GPM
NOx 0.69 / 4.09 GPM
CO got a lot worse. May not have been fully warmed up. But it went from 0.9% of the limit in 2010 to 5% of the limit in 2014.
Actually I was about to post my Caprice's results and limits but annoying, because my Caprice couldn't dyno test the previous few times, the idle results are based on PPM for HC and % for CO. But I do have the limits for the last dyno test it ran in 2009.
HC limit: 2.25 GPM
CO limit: 23.74 GPM
NOx limit: 3.25 GPM
I don't know how granular the standards get but I can compare a 91 Ranger w/ 2.3L 4 cylinder to a 93 Caprice w/ V8.
Truck HC limit: 1.72x higher
Truck CO limit: 2.53x higher
Truck NOx limit: 1.26x higher
I can also make a comparison to the last time it ran on the dyno, at least, in 2009.
HC 1.71 / 2.25 GPM
CO 13.91 / 23.74 GPM
NOx 1.39 / 3.25 GPM
So there you go. The Ranger has higher limits than my Caprice but is significantly cleaner. Hooray?
Here's a little historical comparison of all of the emissions test results I have for the Ranger.
2/22/10 @ 74,139 miles
HC 0.39 / 3.88 GPM
CO 0.56 / 59.97 GPM
NOx 0.46 / 4.09 GPM
2/17/12 @ 87,402 miles
HC 0.25 / 3.88 GPM
CO 1.23 / 59.97 GPM
NOx 0.82 / 4.09 GPM
2/15/14 @ 87,852 miles
HC 0.42 / 3.88 GPM
CO 3.01 / 59.97 GPM
NOx 0.69 / 4.09 GPM
CO got a lot worse. May not have been fully warmed up. But it went from 0.9% of the limit in 2010 to 5% of the limit in 2014.
Actually I was about to post my Caprice's results and limits but annoying, because my Caprice couldn't dyno test the previous few times, the idle results are based on PPM for HC and % for CO. But I do have the limits for the last dyno test it ran in 2009.
HC limit: 2.25 GPM
CO limit: 23.74 GPM
NOx limit: 3.25 GPM
I don't know how granular the standards get but I can compare a 91 Ranger w/ 2.3L 4 cylinder to a 93 Caprice w/ V8.
Truck HC limit: 1.72x higher
Truck CO limit: 2.53x higher
Truck NOx limit: 1.26x higher
I can also make a comparison to the last time it ran on the dyno, at least, in 2009.
HC 1.71 / 2.25 GPM
CO 13.91 / 23.74 GPM
NOx 1.39 / 3.25 GPM
So there you go. The Ranger has higher limits than my Caprice but is significantly cleaner. Hooray?