As a wild guess I would suggest the radio supression relay as well. There are two identical relays that are about 1" square and 2.5" tall. Sealed with silicone. One is for the fan relay and one is to fire the injectors. Usually found mounted on the shock towers. Sometimes side by side on the passenger's tower (NA cars?) and sometimes one on each shock tower (turbo cars?) Their locations vary sometimes between years.

You can simply swap them out and see if the car starts. If it does the easiest thing to do is open them up by removing the cover and resoldering the printed circuit board in each. Pull the fuelpump relay under the ashtray and do it while you are at it. Over time these relays suffer from broken solder joints. Under strong light and with the help of a magnifying glass you can usually find the bad joint but doing them all is not a bad idea. The bad joints sometimes show a faint line that forms a circle aroung the interior of the joint.

There is a wealth of information about your car in the 700/900 FAQ's here at the Brickboard.

Good luck.

Randy