Exhaust need replacing - $240.
Head gasket replaced - $600.
New rear shocks - $100.
New ball joints - $150.
New alternator (3 times) - $120.
Washer bottle leaks, mirror fell off leaving a large chip in the windscreen.
Power steering leaks.
Lifters need replacing.
Had to do the tyres and brake pads, but these don't count as problems.
I bought this car unregistered for A$2700, but it has so far cost me another A$1500 to get it roadworthy and registered, and I still have to get the lifters done, and the air con regassed. Which is another $400. Most of the problems are to do with the age/km.
It's a great looking car, fast, and handles well. Parts are very cheap. My only advice is don't buy one that has transmission problems. And only buy one that already has a roadworthyness certificate as you may end up spending more than the car is worth fixing little problems to get the certificate.
Try to avoid a 1988 model as they still had heaps of bugs.
I've got an '88 EA S-Pack 5 Speed and have come across similar problems - mirror, washer bottle, power steer. I've also got rust around the top of the rear windscreen. Mine also struggled to rev past 3500 rpm - is that a common fault?
The reason it would have struggled to get past 3500 rpm is because most of the ealier E model falcons were designed to have lots of torque and werent designed to be reved much over 3000 rpm... a couple of mods will make it so its more than happy to get towards the redline and feel as if it wants to go further :)