Engagement Concern: Harsh Forward

WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.

ENGAGEMENT CONCERN - HARSH FORWARD

Possible Component	Reference/Action
204 - ELECTRICAL ROUTINE
Powertrain Control System
Electrical inputs/outputs, vehicle wiring harnesses, PCM, TFT sensor, EPC solenoid	Carry out self-test; REFER to the INTRODUCTION - GASOLINE article for diagnosis and testing of the Powertrain Control System. Carry out engagement test and EPC test. GO to PINPOINT TEST B or GO to PINPOINT TEST D . Check idle speed. Repair as required. Clear DTCs, road test and repeat self-test.
304 - HYDRAULIC/MECHANICAL ROUTINE
Fluid
Incorrect level	Adjust fluid to correct level.
Condition	Inspect condition of fluid.
Engine Driveline
Looseness in the driveshaft, U-joints or the engine mounts	Repair as required.
Incorrect Pressures
High forward clutch pressure, high line pressure, high EPC pressure	Check pressure at line, EPC and forward pressure taps. Refer to LINE PRESSURE CHART for specifications. If pressures are high, check the following possible components: main controls, pump assembly.
Main Controls
Main regulator valve stuck, damaged	Inspect and repair as required.
Bolts not tightened to specifications	Tighten bolts to specifications.
Gaskets damaged	Inspect for damage and install a new gasket.
EPC solenoid stuck or damaged	Inspect for damage or contamination. Carry out EPC test in Routine 204. Repair as required.
Case
2-3 accumulator seal/retainer stuck, damaged	Inspect for damage. Repair as required.
Pump Assembly
Bolts not tightened to specifications	Tighten bolts to specifications.
Porosity/cross leaks	Inspect for porosity/leaks. Install a new pump as required.
Gaskets damaged	Inspect for damage and install a new gasket.
Forward Clutch Assembly
Check balls missing or damaged	Inspect for mislocation, poor seating, damage. Install a new forward clutch cylinder.
Friction element damaged or worn	Inspect for damage. Repair as required.
Forward clutch wave spring damaged	Inspect for damage. Repair as required.
Forward clutch return spring damaged	Inspect for damage. Repair as required.