Disconnect the battery. Remove the ignition coils. Remove the ignition control module that was under the coils, and replace it.
It is to distribute the signals from the electronic control module to operate the coils.
The Ignition Control Module is on the top left hand side of the engine under the Ignition Coils.
The ignition module is under the ignition coils The coils are bolted to the frt of the transmission housing. Follow the ignition wires to the coils The coils are bolted to the module underneath The module control spark to the spark plugs. It sends the required signal to the coil as to when to fire t then fires and "sends" the spark through the ignition wire to the spark plug
The 1990 Chevy Celebrity engine is distributorless, the ignition is handled by a combination of the engine control module(computer) and the ignition control module. You did not mention which engine the car has. If your car has the 4 cylinder engine the ignition control module is below the intake manifold at the rear of the engine. You can follow the spark plug wires to it. The coils are mounted to the ignition control module. If your car has the V6 the ignition control module is near the starter and again you can follow the spark plug wires to it. Again the coils are mounted to the ignition control module.
3, all located ontop of the ignition control module.
under the coils
The ignition module is right underneath the ignition coils. The ignition coils are what the spark plugs attach to. My alro was riding really rough so i just changed my coils and module for $200 and it runs like new. All you do is unplug the wires, unscrew the coils(6 bolts) and there is your module. :) Hope this helps!!
The coils are bolted to the ignition control module, there is no coil wire as such.
The ignition module is located under the three ignition coils. The same bolts that hold the coils in place also retain the module to the mounting bracket. To find the coils, follow the ignition wires from the front of the engine to where they attach at the rear. The wires clip to the coils.
Under ignition coils
follow your spark plug wires from your engine to the ignition coils (the other part the spark plug wires attach to) your ignition module is the rectangular shaped plate under the coils there are prongs which attach it to the coils and a wiring harness attached to the bottom. this might help as well. http://wiki.answers.com/Q/How_do_you_Test_ignition_module_1998_Saturn_SL