1996 Saturn SL2 missfire with new ACdelco coils

So you only replaced coil and not the spark plug wires? Why didnt you replace the wures also?When the coils get corroded both the wires and the coil should be replaced. There is corrosion on the spark plug wires connectors as well.

So you replaced the wires when you replaced the coil?Also what kind of plugs did you put in?Are you absolutely sure the spark plug wires are in the correct order you even doubled checked they are?

I have ohmed plenty of bad spark plug wires that ohmed good and were bad. So I have never really relied on ohming spark plug wires as a means of telling if there good or bad. So non of the corrosion from the coils got on too the new spark plug wires?Also what kind of wires did you put on?Also the spark plugs were copper plugs?Those are the only plugs I would run in that car.

Spark plug wires when there hot and under a load ie spark they act differently than jist testing them with a ohms meter. Also a tps circuit issue would be more of high idle issues or a hard shift if you have a automatic transmission.

I have spare coils module and wires I swap rather than ohm everything out. Ohming those gives you a false sense of security. Is the miss worse the ac on?

A spark test isn't a good way to check for a bad spark plug wire that just shows that there is spark at the time you tested it. So does it keep setting a code p0303?If so swap the number 2 and 3 spark plug wires for testing if the wire will stretch and see if it sets a p0202?You could also swap the plug and do the same thing. Also I have seen people have low compression on a cylinder and cause a dead hole or low power contribution but not feel it at higher rpm but it was still there.A fuel pressure issue can be checked with a simple fuel pressure test. You can rent a gauge at auto zone for free but that shouldn't make just one cylinder missfire. Also you could do a compression test on all the cylinders they rent the testers at auto zone for free.I have seen bad coolant temp sensors cause some crazy things to happen but never seen one cause a specific cylinder to set a missfire code.

The pcm is the last thing I would suspect I havent seen very many of them go bad.

Your welcome that was a copper plug that went bad in two weeks? If you run platinum plugs in that care it will carbon foul them. Spark outside the engine is very different then under the heat and compression of the engine.

I have never used any other coils to replace bad or corroded coils with anything else but factory saturn coils.I haven't changed a coil on those cars since I have worked at the saturn dealer. So iam not familiar with the aftermarket coil fit etc.