Coil pack or coil control module?

Do you have any codes?I would say coil cassette i have replaced alot of those for that problem.

The only code was #4 misfiring. I replaced the plugs and it was still misfiring. Checked for spark on each cylinder and #4 was dead. I noticed it looked like there were 2 coils in the coil pack. I seemed if one were bad I would have 2 cylinders misfiring. Both parts (the coil pack and Ingnition control mudule) are about $100 each. I was just seeing if someone knew of a common problem with either so I could purchase the correct one and not spend $200.

The coil is the common failure for that issue i used to replace those when i worked at the saturn dealership. The coil cassette comes complete with both coils housing etc.Then you swap over your old ignition module.I have seen just one cylinder not spark and it was a bad coil in the coil cassettes.There may be a way to just replace the one coil available in the aftermarket parts.

Ac delco D512a coil cassette on amazon is only 81.42 on amazon.

Thank you and I will post after I try this.

That should be the fix a new coil cassette let me know how it runs.

The coil cassette as you call it seems to have done the trick.
Thanks

Your welcome glad to hear it all the cars i have had with that issue was bad coil cassettes

My car is doing the same thing.. misfire on #4. I've already changed out the ignition coil. Do you think the ignition control module could be the problem? Or maybe the second ignition coil I got was bad?

Do you have spark on cylinder 4?

As far as I know... the code reader said "misfire on #4" and it runs ok when I accelerate. However, when slowing down or idling, the engine gets rough. The car still has plenty of power to accelerate.

Do you have spark on number 4 cylinder?

Pretty sure there is a spark on 4. Not sure how id check to see if there is or not.

Pull the coil cassette out hook a spark plug to the number 4 boot with the cassette plugged in ground the plug crank it over and see if the plug sparks?

It had a spark.
I've fixed the problem now... a lifter was stuck in the down position, and a rocker arm was out of alignment. She runs like a new car now. :)

Glad to hear it.