Diagnostic Routine 208/308 - Engagement Concern: Harsh Forward And No Reverse

WARNING: This page is about a different car, the 2004 Mercury Monterey and 2004 Ford Freestar. However, it is still accessible from the selected car via links, so may be relevant.

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 - CNG, FLEX-FUEL & GASOLINE for diagnosis. Go To PINPOINT TEST B: TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR , Go To PINPOINT TEST D: DIGITAL TRANSMISSION RANGE (TR) SENSOR or Go To PINPOINT TEST E: ELECTRONIC PRESSURE CONTROL (EPC) SOLENOID . Refer to PINPOINT TESTS - NON OSC EQUIPPED VEHICLES .
308 - HYDRAULIC/MECHANICAL ROUTINE
Fluid
Incorrect level	Adjust fluid to correct level.
Incorrect Pressures
High line pressure, high EPC pressure	Carry out Line Pressure Test. Check pressure at line and EPC pressure taps. See the LINE PRESSURE CHART . If pressures are high, check the following possible components: Main Controls Fluid Filter and Seal Assembly.
Main Controls
Bolts out of torque specification	Tighten bolts to specification.
Gaskets and Separator - damaged, off location	Inspect for damage. Install new as required.
B1, B4 Check Ball, Pressure Fail-safe Valve, Main Regulator Valve - stuck, damaged, missing	Inspect for damage. Repair 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 new solenoid. Inspect O-rings for damage. Repair as required.
Forward Clutch Assembly
Seals, Piston -worn, damaged	Inspect for damage. Install new as required.
Friction Elements - damaged, worn	Inspect for damage. Install new as required.
Check Ball - missing	Inspect for damage. Repair as required.