Mirage Sedan DE L4-1468cc 1.5L SOHC MFI (1997)
within the following parameters. ATF temperature must be 158 degrees F (70 degrees C) or higher.
Note the TCC duty cycle reading when the shudder/surge/vibration occurs.
a.
If shudder/surge/vibration occurs when the TCC duty cycle is approximately 45% - 55%, the condition may be due to the breakdown of the
A/T fluid. Go to Step 3 for repair instructions.
b.
If shudder/surge/vibration does NOT occur when the TCC duty cycle is approximately 45% - 55%, diagnose for the following possible
causes. Use an electronic vibration analyzer (Kent-Moore J-38792 or equivalent) as described in the "Noise, Vibration and Waterleaks
(NVW)" training skill module available through the Mitsubishi Academy.
^
Tire vibration
^
Front axle vibration
^
Damage to A/T internal components
^
Transfer case damage
3.
If shudder/surge/vibration occurs when the TCC duty cycle is approximately 45% - 55%:
a.
Flush the A/T system as described in the "A/T Fluid Replacement" and "Flushing Coolers and Tubes" procedures in Group 23 of the service
manual. Backflush the transmission oil cooler when you flush the system. If a flushing tool is not available, refer to TSB-99-23-011 for de
tails on using an aerosol A/T oil cooler flush solution.
b.
Refill with new SP-III automatic transmission fluid. It is important to use SP-III to eliminate torque converter damper clutch shudder.
c.
With the engine idling and at normal operating temperature, check the ATF temperature by reading "A/T Temperature Sensor" on the scan
tool data list. When the ATF temperature is between 158 - 176 degrees F (70-80 degrees C), the ATF level must be just below the "F" mark
on the dipstick. Go to Step 4.
d.
Test drive to confirm the repair. A small amount of vibration may still exist, which will go away eventually (with 1-60 minutes of driving) as
the Spill works into the clutch material.
If the shudder/surge/vibration condition continues even after the vehicle has been driven for 60 minutes after the repair, or if the customer
later returns the vehicle with the same condition, replace the torque converter as described in Group 23 of the appropriate service manual.
WARRANTY INFORMATION
Normal warranty procedures apply.
