I would go one better and say 90%, the other 10% can be put down to the BLUE BOX syndrome! I get a lot of "but they are are carp on fuel economy", to be honest, even a V8 ain't that bad, it's not good by any stretch of the imagination, but my brothers diesel Ford Ranger is worse.
Most of the probs I've got are due to previous owners bodges/shortcuts and complete lack of mechanical sympathy.
What I keep forgetting is the damn thing is 20 years old and has had a hard life. Like most 20 year olds, it still hasn't decided what it wants to do with it's life yet. Mind you , if it carries on the way it's going, the rest of it's life is going to be very short and very very painful!