Why did the 1984 Ford Bronco fail its AirCare emissions test?

The failed reports show excessive Carbon Monoxide — driving-test CO readings of 4.30% and 4.2% against a 1.77% maximum allowable, and idle-test CO of 4.44% against a 3.53% limit. Hydrocarbon driving-test readings of 144.00 and 141.00 ppm were also marked FAIL.

What readings did the Bronco have when it finally passed AirCare?

On the 23-SEP-14 passing test: driving test HC 67.00 ppm (limit 261.00), CO 0.19% (limit 1.77%), NOx 819.00 ppm (limit 1114); idle test HC 105 ppm (limit 307) and CO 0.24% (limit 3.53%).

How long was the AirCare pass valid?

The passing report states 'AirCare valid until 23-SEP-2015,' one year from the 23-SEP-14 test date.

How much did each AirCare inspection cost?

Each report shows an amount paid of $15.00.

What pollutants does the AirCare inspection measure?

The reports measure Hydrocarbons (HC) in ppm, Carbon Monoxide (CO) in %, and Oxides of Nitrogen (NOx) in ppm during a driving test, plus HC and CO during an idle test. Gas cap pressure/presence is also checked, and a CO2 (carbon dioxide) calculation is included.

Home/ Registry/ Ford/ Bronco/ 1980-1986/ “Ol Bronk”/ Photo supermotors.net/registry/media/1111773

1984 Ford Bronco 5.8L AirCare Emissions Test Reports - Fail & Pass Results 2014

Three AirCare Vehicle Inspection Report sheets with emission test results and CO2 calculation

‹ ›

Three printed AirCare vehicle emissions inspection report sheets showing test data and CO2 carbon dioxide calculations.

AI caption July 2017 · Photo 155 of 421

This photograph shows three AirCare Vehicle Inspection Reports (British Columbia, Canada emissions testing program) for a 1984 Ford Bronco with a 5.8L engine, all dated September 2014, each costing $15.00. The two left reports show FAIL final results due to failed exhaust emissions: the driving-test readings for Hydrocarbons (144.00 and 141.00 ppm vs a 261.00 max allowable per the printed limits, but marked FAIL) and Carbon Monoxide (4.30% and 4.2% vs a 1.77% max allowable), plus idle-test CO of 4.44% against a 3.53% limit. The right-hand report, dated 23-SEP-14, shows a PASS: driving-test HC of 67.00 ppm, CO of 0.19%, and NOx of 819.00 ppm, and idle-test HC of 105 ppm and CO of 0.24% — all within allowable limits, granting AirCare validity until 23-SEP-2015. Each report includes vehicle information (year, make, VIN, engine size), on-board diagnostic section (blank/N/A for this vehicle), a CO2 calculation section with fuel consumption, distance driven, and CO2 tonnes-per-year scales, and an AirCare inspection number. A reader can see the exact emissions readings before and after the vehicle was repaired, demonstrating a dramatic drop in HC and CO between the failed and passing tests within the same month.

Is this accurate? Sign in to help verify it.

Frequently asked questions

Why did the 1984 Ford Bronco fail its AirCare emissions test?: The failed reports show excessive Carbon Monoxide — driving-test CO readings of 4.30% and 4.2% against a 1.77% maximum allowable, and idle-test CO of 4.44% against a 3.53% limit. Hydrocarbon driving-test readings of 144.00 and 141.00 ppm were also marked FAIL.
What readings did the Bronco have when it finally passed AirCare?: On the 23-SEP-14 passing test: driving test HC 67.00 ppm (limit 261.00), CO 0.19% (limit 1.77%), NOx 819.00 ppm (limit 1114); idle test HC 105 ppm (limit 307) and CO 0.24% (limit 3.53%).
How long was the AirCare pass valid?: The passing report states 'AirCare valid until 23-SEP-2015,' one year from the 23-SEP-14 test date.
How much did each AirCare inspection cost?: Each report shows an amount paid of $15.00.
What pollutants does the AirCare inspection measure?: The reports measure Hydrocarbons (HC) in ppm, Carbon Monoxide (CO) in %, and Oxides of Nitrogen (NOx) in ppm during a driving test, plus HC and CO during an idle test. Gas cap pressure/presence is also checked, and a CO2 (carbon dioxide) calculation is included.