I posted a question on this a month or so ago. Just put a rebuilt auto trans for my 01 civic. The trans has 27000 documented miles on it. When the trans shifts from 3rd to 4th gear there is a slight hesitation. I don't know if it would be considered a slip or not. The RPM's jump slightly before it shifts into third. It is more noticed when you give it more gas. I just replaced both solenoids on the outside of the trans as one of you suggested. The problem persists........ What are my other options. I am selling the car soon, so motor swap is not in the budget. I have a warranty on the trans so I need to figure something out while it is still under the warranty. Thanks guys.