Excessive Shock or Engine Revs Up Abnormally High On 3-4 Upshift or 4-3 Downshift

Excessive shock or engine revs up abnormally high 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

CPC valve A defective

CPC valve B 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 gasket, the ATF feed pipes, and the O-rings for wear and damage.

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 CPC valve A in the main valve body for free movement, and check the valve spring for wear and damage.

Notes

Check CPC valve B in the secondary valve body for free movement, and check the valve spring 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 the 3rd and 4th clutch pressures A/T Pressure Test.

Notes

Inspect the 3rd and 4th clutches for wear and damage.

Notes

Check the 3rd accumulator piston, the O-ring, and the spring in the regulator valve body for wear and damage.

Notes

Check the 4th accumulator piston, the O-ring, and the spring in the accumulator body for wear and damage.

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 flat-plates are worn or damaged, replace the discs and the flat-plates as a set. If the wave-plate height is out of tolerance, replace the wave-plate. If the discs and the plates are OK, adjust the clearance with the clutch end-plate.