I have 2005 2351cu Kia Sorento with 245000 km

Thanks just to have that confirmed it will work properly or not at all! best regards IK

If it doesn't start at all, that might be your problem. Had some older than yours, and the evap solenoid was bad allowing vacuum to leak constantly, with same symptoms. Not to say this is your problem.

It starts up every time seems ok for some minutes then goes up to 2000 and down again till stops. Ik

Do you have the capability of checking the things we suggested. We see these things daily and there is not just one thing that causes these symptoms. If you were here at my shop I would show you how to diagnose this but you need someone there to help you with this. You have very good information on what the problem is.

Yes I do. Will start to check fuel pressure got info about 35 psi as well as the fuel filter. Vacuum leak,evap solenoid,and cleaning on throttle body is on the list. See what happens. Reg. IK

Let us know

With pleasure! Reg.Ik

Check your other post for info on the P0340 code.