Engagement Concern: Harsh Forward And No Reverse

ENGAGEMENT CONCERN: HARSH FORWARD AND NO REVERSE

Possible Component	Reference/Action
208 - ELECTRICAL ROUTINE
Powertrain Control System
Electrical Inputs/Outputs, Vehicle Wiring Harnesses, Powertrain Control Module (PCM), TP, MAF, OSS, IAT, PSP, TFT, Digital TR Sensor, Internal Harness, EPC Solenoid, Engine RPM, ISC	Run On-Board Diagnostic. REFER to INTRODUCTION - GASOLINE for diagnosis. GO to PINPOINT TEST B , GO to PINPOINT TEST D and GO to PINPOINT TEST E . Refer to PINPOINT TESTS - NON OSC EQUIPPED VEHICLE in this article.
308 - HYDRAULIC/MECHANICAL ROUTINE
Fluid
Incorrect level	Adjust the fluid to the correct level.
Incorrect Pressures
Line Pressure, EPC Pressure - high	Carry out Line Pressure Tests. Refer to SPECIAL TESTING PROCEDURES in this article. Check pressure at line and EPC taps. See LINE PRESSURE CHART for specification. If pressures are low, refer to LINE PRESSURE DIAGNOSIS CHART .
Main Controls
Bolts out of torque specification	Tighten bolts to specification.
Gaskets and Separator - damaged, off location	Inspect for damage. Install a new as required.
B1, B4 Check Ball, Pressure Failsafe Valve, Main Regulator Valve - stuck, damaged, missing	Inspect for damage. Install a new as required.
Line Modulator Valve - stuck open	Inspect for damage. Repair as required.
Pump Assembly
Bolts out of torque specification	Tighten bolts to specification.
Gaskets - damaged, off location	Inspect for damage. Install new as required.
Components - damaged	Inspect for damage. Install new as required.
EPC Solenoid - stuck, damaged	Inspect for damage and contamination. Repair as required. Activate solenoid using Transmission Tester. If solenoid operation cannot be felt when placing hand on solenoid, install a new solenoid. Inspect O-rings for damage. Install a new as required.
Forward Clutch Assembly
Seals, Piston - worn, damaged	Inspect for damage. Install a new as required.
Friction Elements - damaged, worn	Inspect for damage. Install new as required.
Check Ball - missing	Inspect for damage. Install new as required.