I own a Renault Clio MK2 2000 1.1 i have had this car for almost 2 years and have always had a niggling problem seeming to be getting worse.. when the car is sat ticking over it judders like hell! although i have no loss of power? :/ somebody suggested my throttle body but i can't find one for less than £40 and would like to avoid spending this if this will not cure my prob! Help please