My clio is covered and accelerated alone

Hello everyone, I need help

I have a R-Clio 1.4 Alize gasoline

a while ago, stop at a traffic light the car accelerated only to almost 4000 relevations, I scared so much that the car turned off. Shortly thereafter instead of accelerating the car, it fell, as soon as it started or when I stepped in a clutch to change the march, or in a traffic light, etc.

Now the same thing happens to me, the other day I started it but the car was dump, the revolutions were coming, although the accelerator stepped on to revolutionize it, the car was prayed when the car came down from revolutions, and now what happens to it is that I have the car revolutionized all the time, 1500-2000 revolutions in stop, after 10 min seems to its normal state, but then the next step is to be stuck.

In the workshop, I have already taken it twice. The first was for another reason, and when I took it out it was when the acceleration happened to me at the traffic light I took it again and the workshop boy saw that the accelerator cable was wrong and he was dated in the gabardine, like this, so I changed it.

But then the car kept doing strange things and I took it again and all he told me was that he had found an electrical failure and in principle would be that. But it is evident that it is not, because it is happening again.

Can someone tell me what's wrong with me ??? And how much can it cost me?
I am a bit desperate.
Thank you!!!!!
Meris

Hello two things, it can be the temperature sensor or the step by step, you can also make a regulation of accelerator sensor parameters

Hello, the problem is in the relief sensor that will take it out and clean it very well.

In general, short -circuit is right, but you should check several things, the first thing is the IAC valve, since if the regulation is not adequate then the vehicle works or very low revolutions or many revolutions, that problem is simple and quick to check, now the temperature sensor is true that when the vehicle is in cut it is very accelerated, but it does not make the problem down in revolution Electric is very possible since the reindeers have very bad lands in their electric equipment and give a lot to do, for example when stepping on the brake, make the lights to make, or turn on and turn the positions and intermittent, the problem in your vehicle is required when stepping on the brake only? Only with the lights on or always?

Check the cables that go to the idle engine engine (step by step) move them and check if they accelerate. Many times those connectors give problems