Lock-Up Torque Converter Trouble Shooting - AMC & Jeep

TORQUE CONVERTER - NO LOCK-UP CHART (AMC & JEEP)

Possible Cause	Correction
Faulty oil pump	Replace oil pump
Sticking governor valve	Repair or replace as required
Valve body malfunction Stuck switch valve Stuck lock-up valve Stuck fail-safe valve	Repair or replace valve body or its internal components as required
Failed locking clutch	Replace torque converter
Leaking turbine hub seal	Replace torque converter
Faulty input shaft or seal ring	Repair or replace as required

TORQUE CONVERTER - WILL NOT UNLOCK CHART (AMC & JEEP)

Possible Cause	Correction
Sticking governor valve	Repair or replace as required
Valve body malfunction Stuck switch valve Stuck lock-up valve Stuck fail-safe valve	Repair or replace valve body or its internal components as required

CONVERTER - STAYS LOCKED UP AT TOO LOW A SPEED IN DIRECT (AMC & JEEP)

Possible Cause	Correction
Sticking governor valve	Repair or replace as required
Valve body malfunction Stuck switch valve Stuck lock-up valve Stuck fail-safe valve	Repair or replace valve body or its internal components as required

TORQUE CONVERTER - LOCKS UP OR DRAGS IN LOW OR SECOND (AMC & JEEP)

Possible Cause	Correction
Faulty oil pump	Replace oil pump
Valve body malfunction Stuck switch valve Stuck fail-safe valve	Repair or replace valve body or its internal components as required

TORQUE CONVERTER - SLUGGISH OR STALLS IN REVERSE (AMC & JEEP)

Possible Cause	Correction
Faulty oil pump	Replace oil pump
Plugged cooler, cooler lines or fittings	Flush or replace cooler and flush lines and fittings
Valve body malfunction Stuck switch valve Faulty input shaft or seal ring	Repair or replace valve body or its internal components as required

CONVERTER - LOUD CHATTER DURING LOCK-UP ENGAGEMENT (COLD) (AMC & JEEP)

CONVERTER - VIBRATION OR SHUDDER AT LOCK-UP ENGAGEMENT (AMC & JEEP)

Possible Cause	Correction
Faulty oil pump	Repair or replace oil pump
Valve body malfunction	Repair or replace valve body or its internal components as required
Faulty torque converter	Replace torque converter
Engine performance	Diagnose and tune engine

TORQUE CONVERTER - VIBRATION AFTER LOCK-UP ENGAGEMENT (AMC & JEEP)

Possible Cause	Correction
Faulty torque converter	Replace torque converter
Exhaust system vibration	Align exhaust system
Engine performance	Diagnose and tune engine
Throttle linkage misadjusted	Check and adjust throttle linkage

TORQUE CONVERTER - VIBRATION WHEN "REVVED" IN NEUTRAL (AMC & JEEP)

Possible Cause	Correction
Torque converter out of balance	Replace torque converter

CONVERTER - OVERHEATS: OIL BLOWS FROM DIPSTICK/PUMP SEAL (AMC & JEEP)

Possible Cause	Correction
Plugged cooler, cooler lines or fittings	Flush or replace cooler and flush lines and fittings
Stuck switch valve	Repair switch valve in valve body or replace valve body

TORQUE CONVERTER - SHUDDER AFTER LOCK-UP ENGAGEMENT (AMC & JEEP)

Possible Cause	Correction
Faulty oil pump	Repair or replace oil pump
Plugged cooler, cooler lines or fittings	Flush or replace cooler and flush lines and fittings
Valve body malfunction	Repair or replace valve body or its internal components as required
Faulty torque converter	Replace torque converter
Faulty locking clutch	Replace torque converter
Exhaust system vibration	Align exhaust system
Engine performance	Diagnose and tune engine
Throttle linkage misadjusted	Check and adjust throttle linkage