940 L4-2.3L SOHC VIN 88 B230F (1992)
Automatic Transmission Fluid: Symptom Related Diagnostic Procedures
Leakage at Standstill
Probable fault ............................................................................................................................................ Defective gasket or oil cooler connection.
Action .......................................................................................................................................................................... Clean, locate and correct leak.
Leakage at Standstill With Engine Running
Leakage at front of unit:
Probable fault .............................................................................................................................................................................. High fluid level.
Action ...................................................................................................................................................................................... Correct fluid level.
Probable fault ........................................................................................................................................................ Pump bushing damaged/loose.
Action ...................................................................................................................................................................................... Replace oil pump.
Probable fault .................................................................................................................................................... Oil pump seal worn or damaged.
Action ............................................................................................................................................................................................. Replace seal.
Probable fault .................................................................................................................................................. Torque converter throat damaged.
Action .......................................................................................................................................................................... Replace torque converter.
Probable fault ............................................................................................................... Torque converter housing insecurely attached to engine.
Action ......................................................................................................................................................................................... Tighten, adjust.
Leakage from fluid filler tube (after driving).
Action ...................................................................................................................................................................................... Wipe dry. Inspect.
Leakage While Driving
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Probable fault ......................................................................................................................................... Leakage from rear extension gasket or seal.
Action ................................................................................................................................................................................... Replace gasket and seal.
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Probable fault .............................................................................................................................................................................. Leakage from seals.
Action ...................................................................................................................................................................................... Inspect. Replace seals.
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Probable fault .............................................................................................................................................................................. Leakage from front.
Action .................................................................................................................................................................. See under "Leakage At Standstill".
Leakage at Front
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Check if fluid level is high and if fluid is burnt, over heated or gives off burnt odor.
Correct ....................................................................................................................................................................................................... see item 3.
Fluid burnt, gives off burnt odor etc ............................................................................................................................................................ see item 2.
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Check for particles in sump.
Particles ......................................................................................................................... Probable internal fault. Replace (or overhaul) transmission.
No particles ................................................................................................................................................................................................ see item 3.
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Does leakage occur during hard highway driving or towing?
Yes ..................................................................................................................................................................................... See "Checking Fluid".
No, probable leakage from:
....................................................................................................................................................................................... Torque converter.
............................................................................................................................................... Torque converter bearing in pump bushing.
...................................................................................................................... Insecure attachment of torque converter housing to engine.
Correct leakage or replace transmission.
