Does Centralized I/M 240 Testing Really Offer More Benefits Than Decentralized Idle Testing?
It is important to realize that idle testing was designed around non-computerized, carbureted vehicles and did a fairly good job of identifying dirty cars with that technology. The use of idle testing on today’s high-tech vehicles creates too many false failures, as well as an extremely high number of false passes, or cars that really are dirty but test clean. Research supports that the I/M 240 offers a means to virtually eliminate errors in vehicle test. It allows I/M programs to gain veritable clean air benefits from groups of cars that would be missed by traditional idle testing, assuming these dirty cars get diagnosed and repaired correctly.
