Early Focis had some assorted problems- most are sorted out. 2000 models specifically had TPS problems that were alleviated by replacing the TB with one with a re-designed TPS.
00-04 Focis might have an old style ignition lock cylinder still installed in the car. This lock cylinder can lock up, and the ignition key will not turn. Ford lock cylinders need the key to turn in order to replace the cylinder- so a locked up cylinder is a bad problem in a Ford. To tell the difference, look at the position of the key hole in the lock cylinder. If the key hole is in the center of the lock cylinder- then it has already been changed to the improved type. The old style lock cylinder has the key hole off center towards the bottom. If you purchase a car with this lock cylinder, let us know, and we will direct you how to properly change the lock cylinder before it locks up. It will cost you about $100- well worth piece of mind. If you wait until it locks up- it will cost more like $300.
00-02.5 manual transmission shifters tend to crack and break, but we have a great How-To on how to repair a busted factory shifter.
03-04 PZEV cars come with the 2.3L Duratec engine. To identify your Focus engines, look under the hood. The SPI engine says "Split Port Injection" on the valve cover, and will look just like your old Escort motor. The Zetec engine will have Zetec written on the valve cover, and will have spark plugs going through the center of the valve cover. This engine or the Duratec will be all you will find in hatchback cars. The SPI was only available in sedans (maybe wagons). The Duratec engine will not have anything written on the valve cover, but it will have coil on plug ignition, so you will see 4 coils mounted on top of the valve cover.
05-07 Focis have "lifetime" air filters. This isn't as great as it sounds. Most of us remove the lifetime filter and replace it with an aftermarket CAI filter.
Wagons have alignment problems that require purchasing camber adjustment bolts for the rear otherwise tires will be eaten up very quickly.
That's about all I can think of right now.
---The Complete How-To Archive--
Moderating everything now, let me know if I can help.
Originally Posted by the user formerly known as ZX3_Chick
You're special aren't you.