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CONDITION POSSIBLE CAUSES CORRECTION 10. Overdrive Clutch Failed. 10. Disassemble overdrive and repair as 11. Hydraulic Pressure Low. 11. Pressure test transmission to determine 12. Valve Body Valve Stuck. 12. Repair stuck 3-4 shift valve, 3-4 timing 13. O/D Piston Incorrect Spacer. 13. Remove unit, check end play and install 14. Overdrive Piston Seal Failure. 14. Replace both seals. 15. O/D Check Valve/Orifice Failed. 15. Check for free movement and secure SLIPS IN OVERDRIVE 1. Fluid Level Low. 1. Add fluid and check for leaks. 2. Overdrive Clutch Pack Worn. 2. Remove overdrive unit and rebuild clutch 3. Overdrive Piston Retainer Bleed 3. Disassemble transmission, remove retainer 4. Overdrive Piston or Seal 4. Remove overdrive unit. Replace seals if 5. 3-4 Shift Valve, Timing Valve or 5. Remove and overhaul valve body. Replace 6. Overdrive Unit Thrust Bearing 6. Disassemble overdrive unit and replace 7. O/D Check Valve/Bleed Orifice 7. Check for function/secure orifice insert in DELAYED 3-4 UPSHIFT 1. Fluid Level Low. 1. Add fluid and check for leaks. 2. Throttle Valve Cable Misadjusted. 2. Adjust throttle valve cable. 3. Overdrive Clutch Pack Worn/Burnt. 3. Remove unit and rebuild clutch pack. 4. TPS Faulty. 4. Test with DRB scan tool and replace as 5. Overdrive Clutch Bleed Orifice 5. Disassemble transmission and replace 6. Overdrive Solenoid or Wiring 6. Test solenoid and check wiring for 21 - 58 42/44RE AUTOMATIC TRANSMISSION DN DIAGNOSIS AND TESTING (Continued) |