If the clutch is still working correctly, continue using it. As far as the trans, it doesn't have anything to do with that.
AS far as the engine idle, it sounds like the idle air control valve may be sticking and causing problems for you. Remove it from the throttle body and check to see if it is clean and working. If you plan to clean it, make sure you get the proper cleaner from a parts store.
Let me know what you find.
Joe
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Saturday, September 18th, 2010 AT 10:19 PM