Hey guys,   Hoping you can help.   I have a 2014 VRS (Petrol) that has an extremely rough idle (But no engine light) this has been going on a couple of weeks and seems to be intermittent and not temperature dependant. Some days when I start the car it starts fine, but as the engine warms and RPM's drop to 750RPM it feels like the car is running on 3 cylinders, this is accompanied by what can only be described as a "Squeak" noise from the engine. If it shut the car off and sta