How do I do a complete road test?

  • The road test starts with a scan tool on the vehicle. Watch all parameters while driving.
  • Do an engagement test, drive then reverse. Are they sharp and not harsh? Do this in the beginning of the test and throughout the test.
  • Next is the shifting. You want light throttle shifts, medium, and wide open throttle shifts. Do these shifts feel normal in all ranges? At a traffic light, check engagements again.
  • You must also verify lock-up is working. Sometimes this requires you to be on the highway with a scan tool to verify. Some lock-up systems are very soft and the only way to determine if lock-up is working properly is with a scan tool. This will also verify if any codes are set.