So - My 2007 Mini Cooper S (1.6 Turbo) Has developed some rather strange symptoms, it will run completely fine one day, full of power, no misfire and heating is really hot. The next day it will hesitate when accelerating, jerking, almost bogging down and at the same time the heating will stop getting properly hot. I noticed that the coolant tank was full after a "passionate" drive to work this morning, and the coolant wasn't very hot - I'm a little confused - Any ideas?!
- Spark plugs are new
- Coils are new
- Replaced the thermostat sensor last night (and the entire thermostat was replaced about a year ago)
- No warning lights