307 automatic and a malfunction ...

I tried to search the forum but I did not see a problem similar to my problem. First of all, my car is 2003 307 bva. At 100000 km ... I have a problem for about 15 * 20 days. Auto users know that there is an intermediate between the 2nd and 3rd gear in our vehicles. As one cycle rises at 2 o'clock, the speed decreases as if there is an intermediate gear and then goes to 3. This situation has disappeared recently in my 307. It goes 2-3-4 and in the past, the 4th gear goes with 110 at 3000 rpm, now it goes between 90-100. Sometimes it shifts gears like never before ....

The problem of our automakers is generally the problem of solenoid valves. This problem happened to me 3 times and wrote automatic gear foult. When the vehicle was closed and opened, it passed. I did not care more than it did not constantly ... Is it related to those valves in this failure or could it be in another problem? Thanks in advance to the interested friends ...