firstly when im driving and stop the engine sometimes over revs upto 4000 rpm and then after a while dips, this has been happening for a while and also has a problem starting in the morning. the other problem is the car heater doesnt have any speed settings for the fan, either hot or cold and thats it! it does have air con but thats empty and havent filled it up yet, could this be the issue? any help guys would be of great help!! dont fancy going to renault directly and forking out a small fortune
thanks in advance!