Download 1996-00 Civic – ALL 2001 Civic – See VEHICLES AFFECTED Civic Rear Main Oil Seal Leaks (Supersedes 01-040, 1996 – 2001 Civic Rear Main Seal Leak , dated June 12, 2001) SYMPTOM The engine leaks oil between the block and the transmission. PROBABLE CAUSE The rear main oil seal (crankshaft oil seal) is contaminated. REPAIR PROCEDURE 1. Remove the transmission. Refer to section 13 or 14 of the appropriate service manual. 2. Remove and discard the rear main oil seal (crankshaft oil seal). 3. Install the new oil seal. Refer to page 7 – 29 of the ’96-00 service manual or page 7-27 of the ’01 service manual. 4. Reinstall the transmission. 5. Reinstall the drain plug with a new sealing washer. 6. Refill the transmission with the appropriate fluid. 7. 2001 models only. Do the idle learn procedure: Make sure all electrical items (A/C, audio unit, defogger, lights, etc.) are turned off, then start the engine. Let the engine warm up to its normal operating temperature (the cooling fan cycles twice). Let the engine idle (throttle fully closed with all electrical items turned off) for 10 minutes. 8. 2001 2-door EX and LX models only. Drive the vehicle above 40 mph for 5 to 10 minutes with the cruise control on. (This lets the cruise control actuator learn how much slack there is in the throttle cable.)
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