A Study of Vehicle Repair and the Effectiveness of Enhanced I/M Repair Confirmation Techniques 962090
The advent of Enhanced Inspection/Maintenance (I/M) Programs brought a need for specialized diagnostics and repair procedures to enable the proper repair of failing vehicles. Unlike previous emission testing programs. Centralized Enhanced I/M Programs such as IM240 present a unique challenge for technicians - the inability to confirm the effectiveness of the repair without the use of similar equipment. This inability to confirm that proper repairs have been made to meet IM240 requirements coupled with a desire not to risk repeat vehicle failures inspired General Motors to investigate all known equipment and procedures relative to this subject GM has conducted a study to measure the effectiveness of various IM240 repair confirmation products and procedures in predicting IM240 outcomes. Appropriate statistical methods were employed to interpret the data acquired in this study. Also collected was vehicle repair and exhaust gas failure information on the vehicles tested. The intent of this paper is to present the results of this study.
Citation: Bradley, W., Youssef, M., and Graban, R., "A Study of Vehicle Repair and the Effectiveness of Enhanced I/M Repair Confirmation Techniques," SAE Technical Paper 962090, 1996, https://doi.org/10.4271/962090. Download Citation
Author(s):
Wayne H Bradley, Marwan Youssef, Robert Graban
Affiliated:
General Motors Corp
Pages: 16
Event:
1996 SAE International Fall Fuels and Lubricants Meeting and Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1996 Transactions - Journal of Fuels and Lubricants-V105-4
Related Topics:
Environmental testing
Statistical analysis
Emissions certification
Tools and equipment
Diagnostics
Inspections
Gases
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