could you give me a price for a cambelt and tensioner change with water pump and temperture sender and service please for an audi a4 1.9tdi engine code afn,car is a 99 on a v reg. the car has done 156000 miles and the last cambelt was done at 114000 so is this now due to be changed?? the car is well overdue a service so just wanted to know so i could get it done in one go. if it is due a change how long would you need the car for??and could it be done on a saturday??