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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 784 (Automatic Transaxle [Service, Removal & Installation]) >> Mechanical System Test >> Time Lag Test

Time Lag Test

WARNING: This page is about a different car, the 2004 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform mechanical system test preparation. (See Mechanical System Test Preparation .)
  2. Start the engine.
  3. Warm up the engine until the ATF temperature reaches 60-70°C {140-158°F}. 
  4. Shift the selector lever from the N position to D range.
  5. Use a stopwatch to measure the time it takes from shifting until shock is felt. Take three measurements for each test and average from the results using the following formula.
    1. Formula Average time lag = (Time 1 + Time 2 + Time 3) / 3 
  6. Perform the test for the following shifts in the same manner as in Step  5.
    • N position --> R position

    Average time lag 

    1. N position --> D range: 0.4-0.7 s 
    2. N position --> R position: 0.4-0.7 s