Good moorning!

 

Yesterday I had a coolant leak at the temperature sensor, i replaced the o-ring seal and problem fixed, then i drive 150 km and fine. But today when i started the engine, he usually tend to shake the first two seconds then it stabilizes, but this time it keeps shaking, and it does it at any rpm range, and it does it when acceleraring thus irregular aceleration.

 

Please check this video.

 

https://youtube.com/shorts/nCjyTA16zo4?feature=share

Have you ever cleaned the EGR valve out?

Just now, JEFF-the-Bowman said:

Have you ever cleaned the EGR valve out?

I am little confuse about it, is it the black plastic piece with three ports or the one that looks like a gas regulator?

14 minutes ago, Kharl said:

I am little confuse about it, is it the black plastic piece with three ports or the one that looks like a gas regulator?

When my Roomster started running rough i disconnected the rubber hose and with a torch and a mirror i could see it was all full of tar. Took it off, cleaned it out and everything was fine after that. Might be worth waiting for someone with a bit more knowledge to come along and give you a second opinion

 

Nop  i never have cleaned that.

But, could that be the cuse from one day to another suddently that fail?  

13 minutes ago, Kharl said:

Nop  i never have cleaned that.

But, could that be the cuse from one day to another suddently that fail?  

It worked for me, and also a friend of mine who spent £1000 on replacing sensors and all sorts on a V W T5 only to find out it was a clogged EGR valve. If it dont cure your problem it will still need cleaning out eventually anyway

I made this video driving at a fixed speed.

 

https://youtu.be/5DBYyXIHUm8

The problem suddenly disappeared 

I have in plan to clean the EGR, but Could that be the cause? 

 

Can that problem came from one moment to another, should not be  gradually?

 

That was the cause