Park Avenue V6-231 3.8L VIN L SFI (1993)
CAUSE: (Figure 2)
This condition may be due to sediment trapped in the Pulse Width Modulator (PWM) (Illustration # 325). Sediment may enter the PWM solenoid from
either the control or feed passages and lodge in the flow path around the metering ball causing an undesired exhaust leak.
NOTE:
To prevent a customer comeback, careful diagnosis is highly recommended. Do not automatically assume that the condition is caused by the above
concern.
Following is a list of other items that may possibly affect Torque Converter Clutch engagement and release. (Refer to the appropriate Service Manual for
illustration number reference and component location.)
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Improper operation of PCM.
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Poor connection between PCM to vehicle wiring harness and/or vehicle wiring harness to transaxle pass through connector (35).
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Converter clutch valve (335) stuck.
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Converter clutch regulator valve stuck (332/334).
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Turbine shaft seals (519, 520) damaged or missing.
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Converter clutch blow off checkball (420) seated or damaged.
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Damaged oil pump drive shaft seal (228).
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Missing or mislocated No. 1 checkball (372 (A)).
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TCC solenoid o-ring (316) leaking.
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TCC solenoid (315) inoperative.
