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

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

Worn engine or transmission mounts

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

4th clutch transmission fluid pressure switch defective

Shift fork shaft stuck

Servo control valve defective

Foreign material in separator plate orifice

3rd accumulator defective

4th accumulator defective

3rd clutch defective

4th clutch defective

Clearance between clutch end-plate and top disc incorrect

Notes

Check the engine and transmission mounts.

Notes

Test A/T clutch pressure control solenoid valve A or B with the HDS A/T Clutch Pressure Control Solenoid Valve A And B Test.

Notes

Test A/T clutch pressure control solenoid valve C with the HDS A/T Clutch Pressure Control Solenoid Valve C Test.

Notes

Inspect the A/T clutch pressure control solenoid valve body gaskets, the ATF feed pipes, and O-rings for wear and damage. If the A/T clutch pressure control solenoid valve is stuck, inspect the CPC valves.

Notes

Check for a clogged orifice in the transmission fluid pressure switch connector. If the orifice is clogged, remove it and clean the connector.

Notes

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

Notes

Inspect the clutch piston, the clutch piston check valve, and the O-rings. Check the spring retainer for wear and damage. Inspect the clearance between the clutch end-plate and the top disc. If the clearance is out of tolerance, inspect the clutch discs and the plates for wear and damage, and inspect the clutch wave-plate height. If the discs and the plates are worn or damaged, replace them as a set. If the wave-plate height is out of tolerance, replace the wave-plate. If they are OK, adjust the clearance with the clutch end-plate.

Notes

Check the 3rd and 4th accumulator pistons, the O-rings, and the springs in the accumulator body for wear and damage.