For a while now there has been an intermittent issue when stopping the engine. I did ask the dealer to check it last time it went in for something else but they couldn't fault it surprise surprise. Never does it when it goes in.

Anyway, sometimes when the engine stop button is pressed, all is well and the engine stops as smooth as silk. Sometimes though, there is a slight judder. Enough to feel the vibration through the seat and it is all over and done with by the time the engine has stopped so it doesn't last.

One procedure I always follow (not that it would have a say here), is to apply the handbrake and put it in neutral before releasing the foot brake so the hand brake takes the strain. I then put it in park.

Any thoughts on this please? 60 plate SD4 XS, Stornoway Grey, Arm rest pack

http://www.youtube.com/watch?v=ly--gT1RJdk

I wouldn't think its anything to worry about unless the engine is definitely running for a good number of revs on after its been told to stop.

In modern diesels, its a bit more than that turning off the fuel and letting it stop of its own accord. There are valves that clamp shut and close down the air supply and circulations to the engine too.

Compression is quite high too, so as its stopping it's momentum will compress cylinders and fight against other cylinders that also have compression in them, so it can judder as these fight against each other.

One of the main uses of the electronic throttle is to reduce the 'run on' with diesel engines. The ECU cuts off the fuel and this throttle flap should motor to the closed position, no run on should be present.

Ask the dealer to check out the 'electronic throttle body' next time.

Thanks for the input chaps. I will mention it if/when it next goes in for something.  60 plate SD4 XS, Stornoway Grey, Arm rest pack

http://www.youtube.com/watch?v=ly--gT1RJdk

Did you find a cause for the judder as mine did it a couple of times this weekend?

Richard FL2 07 TD4 GS Auto
Ex 02 TD4 Auto