Ralenti Ssangyong Korando problem

Hello everyone!

I have the next problem and I would like to know if someone can help me ...

The subject is with a Ssangyong Korando that has been presenting failure when it comes to keeping idling. When the vehicle is left in idle for a while (variable, it does not happen with a certain cadence) suddenly begins to fail the tacometro needle and finally the engine is turned off.

Perform several tests even the scanning, but does not register any error code and before the testing of sensors apparently all work within normal parameters ..

if anyone knows or can give me a clearer idea where I must look for the fault or that should be attacked a lot ...
in advance thanks !!!
More data: Ssangyong Korando 1999, 2.3 Gasoline engine.

Good, I don't know the model, but check possible broken emptiness hoses and clean the acceleration body.

Thanks Parmen, I will only ask you to clarify a bit to refer to "acceleration body" (I did not write it before, but it is an injection engine)

The acceleration body is where the air hose in the filter is enters, and in it is the acceleration butterfly, TP sensor, IAC valve, etc., just at the entrance of the admission multiple

Thanks for the clarification, it was what I thought only that I know it with another name ... Anyway it is already verified and nothing !!! Everything appears normal !!!