Shift Concerns: Harsh 4-3 Shift Only (Automatic)

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DIAGNOSTIC ROUTINES - SHIFT CONCERNS HARSH 4-3 SHIFT ONLY (AUTOMATIC)

Possible Component	Reference/Action
235 - ELECTRICAL ROUTINE
Powertrain Control System
Electrical inputs/outputs, vehicle wiring harnesses, powertrain control module, electronic pressure control (EPC) solenoid, transmission range (TR) sensor, 3-2T/CCS, transmission fluid temperature (TFT) sensor, OSS, TSS, throttle position sensor, mass air flow sensor, TCC solenoid	Run On-Board Diagnostics Tests. Refer to INTRODUCTION - GASOLINE article for Escape (gasoline) and Mariner or INTRODUCTION- HYBRID ESCAPE article for Escape (Hybrid). GO to PINPOINT TEST B , GO to PINPOINT TEST C , GO to PINPOINT TEST D , GO to PINPOINT TEST E , GO to PINPOINT TEST F and GO to PINPOINT TEST G .
335 - HYDRAULIC/MECHANICAL ROUTINE
Main Control
Bolts out of torque specification	Adjust bolts to specification.
Gasket leaks	Inspect for damage. Repair as necessary.
Servo release shuttle valve, 3-2 timing/coast valve stuck, damaged or misassembled	Inspect for damage. Repair as necessary.
Hydraulic passages damaged	Inspect for damage. Repair as necessary.
Separator plates damaged, blocked	Inspect for damage. Repair as necessary.
Pump Assembly
Bolts out of torque specification	Adjust bolts to specification.
Porosity/cross leaks, seal rings damaged, missing or leaking ball plug	Inspect for damage. Repair as necessary.
Gasket damaged	Inspect for damage. Repair as necessary.
Pump support seal rings No. 2, No. 3, No. 4 or No. 5 (coast and direct clutch circuits) damaged	Inspect for damage. Repair as necessary.
Intermediate/Overdrive Band and Servo Assembly
Servo rod bent, damaged	Inspect for damage. Repair as necessary.
Servo return spring broken	Inspect for damage. Repair as necessary.
Coast Clutch Assembly
Seals damaged, missing	Inspect for damage. Repair as necessary.
Piston damaged	Inspect for damage. Repair as necessary.
Friction elements worn, damaged	Inspect for damage. Repair as necessary.
Check ball not functioning	Inspect for damage. Repair as necessary.
Forward clutch piston and return spring damaged	Inspect for damage. Repair as necessary.
Case
Porosity/cross leaks in servo apply, servo release, direct clutch, coast clutch circuits	Inspect for damage. Carry out Air Pressure Test. Repair as necessary.