Peugeot 307 does not eat gas in 5th gear.

Friends I have the 2005 model peugeot 307 1.6 hdi. I have trouble accelerating my car for about 2 weeks. The vehicle accelerates until 4th gear, but when I step into 5th gear, the speed remains almost constant in 4th gear and does not eat gas. Sometimes it returns to its former state and takes over very quickly. When I had my car installed on my computer for some other reason, I saw that it gave the electrovan error, but they said it was not a problem, and I deleted the error and continued, can this be caused by the electrovan or is there any problem?

teacher, I open the turbo and I know the door is closed.

Teacher, I had him checked, but the masters said there is no problem. However, the vehicle occasionally returns to its original state. I do not understand this. During the past 3 days, the vehicle has continued its uneventful road and speed, but today it has not accelerated again. Moreover, it does not show any signs of error. A few masters said there was a problem with my clutch lining, but some masters say that even if it is a clutch lining, the error must continue. I could not decide whether to change the printing pad or not. They make changes to 600 TL, but I am afraid that the error will continue after they change. Have you ever had such a problem?

Guys, I noticed one more thing today. When I bring the cycle to 3500 when the vehicle is idle, it automatically pulls it back to 3000. No one is faced with this problem?

It does all the gears even if it has a lining.

If the vehicle drops from 3500 rpm to 3000 rpm, it does not exceed 3000 rpm, so 3 messages may be the situation mentioned by our friend hsnsnl above.

Friends, we found trouble, we changed, the problem is solved. If you encounter such a problem, the solution comes from the turbocharger of your turbo.