Has anyone had an issue when their Defender is just sitting at a stoplight where the engine or the car sort of jolts or gives a slight shake or rumble. It doesn’t seem normal. Hard to describe.

 

Is it the auto stop shutting the car off and then restarting it is you change brake pressure, etc?
If you turn off the auto off does it still happen?

 

It is not auto stop start related. When that is off, which I turn off every time, it happens, just a a weird rumble from the engine in idle.

 

I've never experienced a stumble - it may still store a code even if it doesn't throw a check engine light.

 

My 22 p300 does this from time to time. Also has a bit of an idle surge after filling up with fuel. Mine has done this since new. Not sure why. No fault codes related to this.

 

Same thing happens with me. I wonder if I can slightly increase the idle speed with a gap tool.

 

I can’t say for sure about this specific issue, but I once had a similar experience with my Audi. The engine wasn’t running smoothly at idle—it was jumping and acting strange, and it was clear that something was wrong. I spoke to the service center, and they suspected the issue might be related to only doing short trips with the car, preventing the DPF filter from completing a proper regeneration cycle (it was a diesel engine).



They recommended driving at 90 km/h for at least 30 minutes to allow the filter to regenerate properly. I followed their advice, and sure enough, the engine started running normally again, with no more idle issues.

 

I get a decent amount of NVH at startup occasionally on my P300, but goes away quickly. The AJ200 I4 in the Defender is by far the smoothest and most refined application of this engine. I have been in pre-facelift F-Paces and Evoques with the same engine and they were so unrefined, rough and loud, regardless if you were idling or driving along.

 

My P400 will shake the vehicle very slightly - especially at startup. I will notice a gentle kind of low frequency shake from time to time. No codes. No calamity (yet).