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CONDITION POSSIBLE CAUSES CORRECTION 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/ 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 7. Overdrive Excess Clearance 7. Remove unit. Measure end play and 8. O/D Check Valve Missing or 8. Check for presence of check valve. TORQUE CONVERTER Lockup Solenoid, Relay or Wiring Test solenoid, relay and wiring for HARSH 1-2, 2-3, 3-4 OR Lockup Solenoid Malfunction. Remove valve body and replace solenoid NO START IN PARK OR 1. Gearshift Linkage/Cable 1. Adjust linkage/cable. 2. Neutral Switch Wire Open/Cut. 2. Check continuity with test lamp. Repair 3. Neutral Switch Faulty. 3. Refer to service section for test and 4. Neutral Switch Connect Faulty. 4. Connectors spread open. Repair. 5. Valve Body Manual Lever 5. Inspect lever assembly and replace if NO REVERSE (OR SLIPS 1. Direct Clutch Pack (front clutch) 1. Disassemble unit and rebuild clutch 2. Rear Band Misadjusted. 2. Adjust band. 3. Front Clutch Malfunctioned/ 3. Air-pressure test clutch operation. 4. Overdrive Thrust Bearing Failure. 4. Disassemble geartrain and replace 21 - 222 46RE AUTOMATIC TRANSMISSION DN DIAGNOSIS AND TESTING (Continued) |