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Shift Concerns: Timing Concerns - Erratic/Hunting - 212/312

WARNING: This page is about a different car, the 2004 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
SHIFT CONCERNS: TIMING CONCERNS - ERRATIC/HUNTING - 212/312

Possible Component Reference/Action
212 - ELECTRICAL ROUTINE 
Powertrain Control System 
Carry out shift point road test. Run on-board diagnostic. REFER to the INTRODUCTION - CNG, FLEX-FUEL & GASOLINE article for diagnosis. Carry out pinpoint tests using the diagnostic tool. Repair as required. Clear DTCs, road test and rerun Self-Test.
  • Electrical inputs/outputs, vehicle wiring harnesses, internal transmission wiring harness, PCM, TP, RPM, EPC, TFT, shift solenoids, Digital TR sensor, TCC, output shaft speed (OSS)
312 - HYDRAULIC/MECHANICAL ROUTINE 
Fluid 
  • Incorrect level
  • Adjust fluid to correct level.
  • Condition
  • Carry out the fluid condition check.
Filter and Seal Assembly 
  • Filter damaged, plugged; seal damaged, cut or missing
  • Inspect for damage and install new.
Main Control Assembly 
  • Screws out of torque specification.
  • Adjust screws to specification.
  • Gasket damaged or off location
  • Inspect and install a new gasket.
  • Separator plate damaged
  • Inspect for damage. Repair as required.
  • SSA, SSB, SSC, SSD, EPC solenoid stuck, damaged, O-ring damaged or out of bore
  • Inspect for damage. Carry out solenoid function test as listed in the electrical routine. Repair as required.
  • Wrong components used during assembly
  • Verify that the correct components were used.
Torque Converter Clutch 
  • Torque converter
  • See the routine 241/341 : Cycling/Shudder/Chatter Hydraulic/Mechanical Routine 342 .
Specific Shifts 
 
  • Refer to the following shift routine(s) for further diagnosis:
    • No 1-2 shift, Routine 220/320 
    • No 2-3 shift, Routine 221/321 
    • No 3-4 shift, Routine 222/322 
    • No 4-5 shift, Routine 270/370 
    • No 5-4 shift, Routine 271/371 
    • Soft/Slip 1-2 shift, Routine 226/326 
    • Soft/Slip 2-3 shift, Routine 227/327 
    • Soft/Slip 3-4 shift, Routine 228/328 
    • Soft/Slip 4-5 shift, Routine 272/372 
    • Soft/Slip 5-4 shift, Routine 273/373
    • Soft/Slip 4-3 shift, Routine 229/329 
    • Harsh 1-2 shift, Routine 232/332 
    • Harsh 2-3 shift, Routine 233/333 
    • Harsh 3-4 shift, Routine 234/334 
    • Harsh 4-5 shift, Routine 274/374 
    • Harsh 4-3 shift, Routine 235/335 
    • Harsh 3-2 shift, Routine 236/336 
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