I have a 2000 mustang 3.8l and and the rear output shaft seel in the tranny keeps going out.. I have replaced it three times. Within the first 100 miles it'll go out again. What causes this? Its a 5 speed tranny.

Asked by Apr 08, 2014 at 09:28 PM about the 2000 Ford Mustang Coupe

Question type: Maintenance & Repair

4 Answers

100,595

Transmission output shaft bent or bushing worn, driveline slip yoke damaged ie nicked or egg shaped, driveline out of balance or bent. HTH

Best Answer Mark helpful

Can something be wrong with the rear end? That may cause a vibration that causes it to tear the seal out?

100,595

Anything is possible, but normally if there was a vibration in the rear end it would take out the pinion seal first, and you would hear something from the rear end.

100,595

I forgot to mention to check your transmission mount, if it is weak or broke that can also cause your problem.

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