Excessive Shock Or Flares On 3-4 Upshift Or 4-3 Downshift

Excessive shock or flares on 3-4 upshift or 4-3 downshift

Shift solenoid valve B defective

A/T clutch pressure control solenoid valve A defective

A/T clutch pressure control solenoid valve B defective

A/T clutch pressure control solenoid valve C defective

Transmission fluid pressure switch C (4th clutch) defective

Shift fork shaft stuck

Foreign material in separator plate orifice

Shift valve C defective

Reverse inhibitor valve defective

D inhibitor valve defective

A/T clutch pressure control solenoid valve B accumulator defective

A/T clutch pressure control solenoid valve C accumulator defective

3rd air check valve stuck

4th/reverse air check valve stuck

3rd clutch defective

4th clutch defective

Clearance between clutch end-plate and top disc incorrect

Notes

Inspect the shift solenoid valve B function with the HDS Shift Solenoid Valve A And B Test.

Notes

Check for a seized shift solenoid valve, and inspect the O-rings.

Notes

Inspect A/T clutch pressure control solenoid valve A with the HDS A/T Clutch Pressure Control Solenoid Valve A, B, C, and D Test.

Notes

Inspect A/T clutch pressure control solenoid valve B with the HDS A/T Clutch Pressure Control Solenoid Valve A, B, C, and D Test.

Notes

Inspect A/T clutch pressure control solenoid valve C with the HDS A/T Clutch Pressure Control Solenoid Valve A, B, C, and D Test.

Notes

Check for a missing shift fork bolt on the shift fork shaft.

Notes

Check the shift fork shaft detent for wear and damage.

Notes

Check for a clogged orifice in the separator plate. If the orifice is clogged, remove it and clean the separator plate orifice.

Notes

Check shift valve C, the reverse inhibitor valve, and the D inhibitor valve in the main valve body for free movement, and check the valve spring for wear and damage.

Notes

Check the 3rd and 4th clutch pressures A/T Pressure Test.

Notes

Inspect the clutch clearance for the 3rd and 4th clutches.

Notes

Check the A/T clutch pressure control solenoid valve B and C accumulator pistons, the O-rings, and the springs in the secondary valve body for wear and damage.

Notes

Check for a stuck 3rd air check valve in the stator shaft support.

Notes

Check for a stuck 4th /reverse air check valve in the main valve body.