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Short Test Results on 1980 and 1981 Passenger Cars from the Arizona Inspection and Maintenance Program
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Abstract
This paper presents the results of a study which examined short test results and repair data on 1980 (GM vehicles only) and 1981 (all makes) model year passenger cars participating in the Arizona Inspection and Maintenance (I/M) program. The primary purpose of the study was to gather information on the failure rates of these vehicles using the Arizona short test, their mean emission levels, and the types of repairs performed on the failing cars. A unique part of the study was that a generalized software system was developed to extract very specific emission control information from the vehicle identification numbers (VIN's) for these vehicles. The results of the study indicate that in general these vehicles have quite low failure rates in comparison with pre-1980 vehicles, and that certain vehicles have a higher probability of failing the short test than others. The results also indicate that 80−90% of the failed vehicles are successfully repaired by service personnel, and that the average I/M repair cost for 1981 vehicles when free (warranty) repairs are not included is around $38.
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Darlington, T., Crawford, R., and Sashihara, M., "Short Test Results on 1980 and 1981 Passenger Cars from the Arizona Inspection and Maintenance Program," SAE Technical Paper 831209, 1983, https://doi.org/10.4271/831209.Also In
References
- Becker Rutherford “Analysis of Oregon's Inspection and Maintenance Program” APCA Paper No. 79-7.3 June 1979
- U.S. Environmental Protection Agency “Revision to Emission testing Procedure” Federal Register 44 9 2960 2975 January 12 1979
- Lorang White Brzezinski “In-Use Emissions of 1980 and 1981 Passenger Cars: Results of EPA Testing” Paper 829075 presented at SAE West Coast International Meeting San Francisco, California August 1982
- “Analysis of Inspection/Maintenance Data from the Arizona Program” Prepared by Energy and Environmental Analyses, Inc. for the U.S. Department of Energy under Contract DE-AC01-79PE-70045, Task 25. Funded by the Environmental Protection Agency under Interagency Agreement AD-89F-2-A136 April 1983
- U. S. Environmental Protection Agency “Emission Control System Performance Warranty Short Tests and Regulations.” Federal Register 45 101 34802 34843 May 22 1980