2005 Elantra Transmission hiccup or hesitation

when shifting from 2nd to 3rd (automatic transmission) the whole car seems to jerk and shake, plus you feel it accelerate more than usual. It doesn't do this with other gears, up or down. The odd thing, is that when the engine is cold, this doesn't happen, it happens after a while, when the engine starts to warm up. No codes, no lights. engine has 74k and it seems that fluid is about 1/4 qt overfull.

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.