E40D shifts hard sometimes

[2shus]

Got a 95 F150 5.8 automatic. It shifts hard sometimes. We recently dropped pan and drained converter and blew lines out and installed new fluid and filter and no help. No performance issues or slipping, just a harsh shift especially in lower gears. It shifts smooth sometimes. Any ideas

 

[blacksnapon]

Shift Concerns: Feel — Harsh Possible Component Reference/Action
214 — ELECTRICAL ROUTINE
Powertrain Control System
Electrical inputs/outputs, vehicle wiring harnesses, powertrain control module, electronic pressure control, transmission fluid temperature sensor, throttle position sensor, engine RPM sensor, manual lever position switch
Run On-Board Diagnostics. Refer to PC/ED Manuala for diagnosis. Perform Service Manual Pinpoint Tests "B", "D" and "E" using the Transmission Tester 007-0085C and the Transmission Range (TR) Sensor Cable ("MLPS" Manual Lever Position Sensor Cable) 007-00086 as outlined in this section. Service as required. Clear codes, road test and rerun On-Board Diagnostics.

Engine Performance Issues Refer to PC/ED Manuala for diagnosis.

314 — HYDRAULIC/MECHANICAL ROUTINE
Fluid
Improper level
Adjust fluid to proper level.

Condition
Inspect according to instructions in this section under Transmission Fluid Condition Check.

Improper Pressures
High line pressure
Check pressures at line pressure tap. Perform Line Pressure and Stall Tests. Refer to Pressure Chart No. 401 for specifications. If pressures are high or all shifts are harsh, go to main control.

Main Controls
Bolts not tightened to specification
Retighten bolts to specification.

Gaskets damaged
Inspect for damage and replace.

Line modulator valve/spring misassembled, stuck, damaged
Inspect for damage, contamination.

Electronic pressure control solenoid malfunction
Service as required.

Accumulator assembly damaged or wrong assembly
Refer to Electrical Routine No. 214.

Inspect for damage. Service as required. Verify correct assembly is used.

Pump Assembly
Bolts not tightened to specification
Retighten bolts to specification.

Gaskets damaged
Inspect for damage and replace.

Main regulator/booster valve damaged, misassembled
Inspect for damage. Service as required.