Mechanics

P0740 TORQUE CONVERTER CLUTCH CIRCUIT MA

1994 Buick Lesabre

Transmission problem
1994 Buick Lesabre V8 Front Wheel Drive Automatic 108000 miles

ONLY IN GEAR THE ENGINE SOUNDS LIKE IT IS KNOCKING SOMETIME BAD. OUT OF GEAR NOT REALLY A KNOCK PUT CAR ON CODE READER AND P0740 SHOWED UP BUT NO CHECK ENGINE LIGHT HOW DO I FIX THIS?
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Wbrowning
April 28, 2008.



Sounds like the torque converter took a dump. Listen to it from underneath and verify the noise is from the converter.

Dennyp
Apr 28, 2008.