Automatic Box Renault Megane Classic

I have problems with the box. Constantly move to about 100-120km/h jumps fourth in the third and lights the cash failure witness. It is a 1998 Renault Megane Classic.

Put the computer first of all and see that error code gives you and then proceed

The same thing happens to me, have you managed to repair it? How?

I have the same problem with a megane Expression 2.0 automatic ... I can circulate inside the city without problems, but when I upload the speed around 100-110 km/h lowers me to 3rd. And you feel a braking with the engine quite strong ... I wish someone could help ... or if you managed to fix it you could comment as you solutions.

Thank you!!! and luck !!!

I have had the same problem, and the solution has been very easy, the truth is that they took a long time to find the subject, but I was lucky to catch with a mechanic who worried about looking for the breakdown and found it. I tell you, the first impression was to change the entire velocity box but after several tests they found the solution, all this cost me several
months, but that is the least.

First I changed my spark plugs and ... nothing (they thought it could be something
electric.)
Then the coils and ... either.
In the end they changed the solenoid valve that regulates in grease of change or
something. They also changed my change oil.

So you tell me the problem was exactly the same. I think you can be calm. Above all, they don't touch you anything without knowing what you have. They connect the computer and with the car circulating, take out a graph from all the parameters.
If you want me to call you on the phone, send me a number, I have a lot of interest in helping you.

On the invoice of the repair of my car, it says:
Labor check
OS OS FAILURE SELLING BOX
TEST VEHICLE VEHICLE
Pressure control
OA EXT-RE-RE DISTRIBURE HYDRAULIC

MATERIALS
BOARD BOARD
ELECTROVALVULA
3.5 L RENAULTTIC D3 oil D3

TOTAL INVOICE VAT Included: € 300

had confidence, I was also desperate also telling that it was a new car.