Check your rear suspension coil springs are not broken ,could be the last 50mm of coil will ideally need wheels off to check,my 1.8 club had both its coils broken and it passed its MOT as they are not visable from underneath unless you use a mirror on a stick.Any way changed both in an afternoon and they cost about £40 each but i did replace top and bottom locating rubbers at another £18.But once replaced the 75 drove like new again.(lucky to buy it new in 2002 as my first new car,looking for a zt cdti to keep it company now) hope this is of some help PETE
