Hyundai Repair: RPMs Hang when trying to shift - 2006 Elantra GLS, smooth transition, elantra

Question
I bought my 2006 elantra gls manual transmission about a month ago and I noticed the following problem:

When I go to shift--especially from 1st to 2nd gear-- I press the clutch and the RPMs either go up a little or stay where they are and stick there for a while, then very slowly drop.  This makes it very hard to match the RPMs and smoothly shift into the next gear.  I simply can't wait long enough for the RPMs to fall into proper range when trying to shift from 1st into 2nd.  In order to wait that long, I'd have to sit there with my foot on the clutch while my car just coasts for a very long time -- too long.  People behind me would start to honk.  

This is not an issue where I am trying to shift too fast, or giving it gas after pushing in the clutch.  I am trying to shift correctly, but the car won't let me because the RPMs simply don't drop within a practical amount of time.  For the higher gears, I still have the RPM hang, but it isn't as long and I can get by.  But from 1st to 2nd, I have to use a lot of clutch to make a smooth transition since the RPMs aren't matched when I shift.  

I noticed that this problem doesn't start right away.  When I first start the car up cold, it won't hang, the RPMs will just slowly drop, and I can deal much better with it.  However, about 2-4 minutes of driving later and the RPMs begin to stick and hang and it hinders my driving and wears on the clutch.  I would like to RPM match through all the gears, but this makes it impossible.  

Any fixes?

Thank you so much,
Tom  

Answer
There was a reprogram for the 2001 to 2003 Elantras to reduce the time the rpm's stayed up.  As I recall, it was worse with the a/c on.  

But there's nothing for this for the 2004 and newer Elantras.  It's possible that what you're describing is the way they intend the car to operate.  

I'd recommend at least taking it in so the dealer can have a look at it.  There's a possibility of an improperly adjusted throttle cable or a throttle position sensor issue.  They'll be able to much better address whether this condition is an actual problem with the vehicle or whether it's simply operating as designed.

As for what you can do if the situation cannot be changed, go ahead and shift into the next gear, and let the clutch out.  Once you engage the transmmission, the rpm's will drop.  Practice a little with how quickly you can let the clutch pedal out.  The quicker you can let it out without jerking the car excessively, the less wear you'll have on the clutch.