Just found a new coil in the boot so i will give it a try also gonna get a new temp control thing
there was a new coil in the boot? i take it you have just bought the car then? that could be a clue 
are you sure its not the old coil they stuck in the box when they changed it and the new one is on the car if so.
Had it since Jan but only just MOTed and road worthy (Bought it got given it as its was in a garage for 2 years they could get it started new ecu and away she went)
NA its defo new took old one of covered in sh!t new one is really clean never fitted...Changed coolant sensor as well see how that does hopefully should sort it if not back to square one...