Thanks. I also found this.
OK,
These door locks are a drag. Be prepared to spend more time then you think when preparing to change these out.
You will need:
A) New Lockset
B) Door Panel Removal tool
C) Long, needle-nosed pliers
D) Phillips screwdriver #4
E) Small precision flathead screwdriver
F) Phillips screwdriver #2
G) Large flathead screwdriver
1) Remove small round screwcover in the handlepocket (E) pry it out
2) Remove small square Fiero logo on the handlepocket (E) pry it out
3) Remove the doorlock slider by pulling out the slider towards you (it will pop off and slide out of the handle pocket) There should be a small cushion on the doorlock stem. Place it aside for re-installation later.
The door handle pocket can now be removed.
4) Remove the slanted square rubber cover from the armrest. (E)
5) Remove the three phillips head screws that hold the armrest to the door. (D) The armrest will now come off.
6) Using the door panel removal tool (B), work your way around the door liner to pop off all the retainers that hold the panel on to the door (make sure you get the tool completely under the retainer or else you could rip the retainer out of the panel and break it or damage the panel itself. The door panel may not come completely away from the car due to the driverside mirror adjuster. Its ok, just lay it against the door sill.
7) Fold down the panel paper to expose the insides of the door.
8) The next step is to pop the door trim so you can access a very special little screw. This is accomplished by pressing down on the little nylon clips that you can see from inside the panel and pushing these clips out of the doorskin. Be careful!! sometimes these clips can break.
9) From outside, under the door handle, use a small flathead screwdriver (E) to pry the door trim away from the car. It is held in place there by a little nylon push in clip. This will allow the trim to move away from the car.
10) Under the door trim, you will see a single phillips screw. This screw holds a doorskin tensioner on inside the door. Recognized as a round plastic circle within a square. You need to remove this tensioner to gain proper access to the springclip that holds the lock cylinder in place. Once the phillips screw is removed from the outside, the tensioner will slide forward and can be removed from the door.
11) Back to the inside. There is a small clip that holds the door lock rod on the bottom of the cylinder. This clip can be removed by pulling it out at the top and then sliding it down. That little precision screwdriver will help to pull the clip out at the top. There is a pressed in edge on the clip that drops into the armature. The rod can now be moved away from the cylinder. (Remember how it comes off, you need to reverse this to get it back on).
12) You can see the spring clip that holds the cylinder in. It has a 90 degree bend to it and is visable on the front side of the lock cylinder.
13) At this point, you must wiggle, wiggle, wiggle that clip with a large flathead screwdriver until it finally lets go of the cylinder. It is a PITA but it will come out. You may also want to use those pliers (C) to hold up the clip while you pry and twist at it.
14) Once the clip pops off, the cylinder can be pulled from the door through the inside.
15) Check the spring clip for nicks and hammer them flat before installing the new lock cylinder.
16) Remove the arm from the old cylinder and place it on the new one. The new cylinder should have new arm clips included.
17) Place the new cylinder in the door from the inside. Make sure it slides as far in to the mounting plate as possible.
18) Now comes the PITA again. You need to slide that spring clip behind the cylinder plate to lock the new cylinder back in place. This will be more trial and error but I was lucky enough to get it on the second or third try.
19) Next, put the small clip back on the rod and get that back on the assembly. You do remember how it goes back on right?
CHECK THE LOCK FOR FUNCTIONALITY BEFORE GOING FURTHER
20) Once you are comfortable that the lock works well, you can replace the doorskin tensioner back into its slot on the inside of the door and screw it back in place from the outside with the small phillips screw.
21) Push the exterior door trim back into place
22) The paper door liner can now be put back in place. Some masking tape will hold it in position while you reinstall the door panel.
23) Now the door panel can be remounted to the door. Be careful when pushing those nylon clips back in. If you don't align them properly, you can crush them.
24) Now, re-install the armrest with the three #4 phillips screws- replace the rubber cap in the armrest.
25) Put the handle pocket back on making sure you feed the door lock actuator rod back through the pocket.
26) Slide the lock cover back through the handle pocket and pop it back into place. Don't forget that little cushion unless it wasn't there to begin with.
27) Put the screws back in and cover the screwheads with their appropriate covers.
