For the past few days my car has started juddering at idle and the rev counter is hanging around 850. At first I thought this was just the SAI pump getting worse, but the problem remains when that dies down. The whole car judders (not violently, but you can feel it) and you can see the exhaust physically moving, kind of like it's coughing.

 

You can't see it move much in this vid (had to use my phone camera) but you can certainly hear it:

 

 

 

It doesn't change when the car has warmed up.

 

 

Anyone got any ideas? :(

 

Thanks

Coilpack or sparkplug failing possibly, could even be bad fuel.

I don't think I've had the coilpack recall thing done, so it could be that. I always use Nitro+ so I would hope the fuel was good.

 

Just praying it doesn't fail on me before I can get it seen too...

i got loads of packs if needed.