I have a 94 pontiac grand prix that is sparking by the distributor I 've changed out the spark plug wire but it's still sparking

No, please change the wires. There is no repair for this. Also make sure they are routed properly through the clips that hold them away from the engine metal.

You will need to remove the coil packs first. To remove coil packs, undo 4 bolts and tip the coils over to the side.

Users on the internet say also that you can remove two engine top mounts to access the plug wires. See links below:

WikiAnswers - How to change spark plugs on 1999 pontiac grand prix

How to Replace Spark Plugs in a Pontiac Grand Prix |

How to Replace Spark Plugs in a Pontiac Grand Am

Yahoo! Answers - 1999 Pontiac Grand Prix Spark Plugs?

My info doesn't show a distributor on this vehicle, it shows a coil pack. I guess I can't help you?
Usually if no spark at the spark plugs, I also check for fuel injector pulse. If you have neither one, I check for rpm signal and or security system issue.

I actually have the same car, and when mine did that it ended up being a cracked spark plug. So I changed the plug and it cracked again. Ended up needing new spark plug wires.

Learning how to test a GM distributor less ignition system rather then guessing an replacing parts is the proper way to diagnose . Pulling a couple of pull wires of the same coil an having someone crank the engine over to see if there is spark would the first test . If there is no spark ,could be the ignition module , or the crankshaft postion sensor .
GM 3 8L Ignition Control Module And Crank 3X 18X Sensor Test

are spark plug wires on a1996 pontiac grand prix the same sizes?

1994 Pontiac Grand Prix 3.4 liter DOHC V-6 VIN "X"




1994 Pontiac Grand Prix 3.1 liter V-6 VIN "M"



Hope this helped; TY for using Fixya (remember rated and comment this).

A code “multiple misfire” may mean that one or more of the following has happened:

•Faulty spark plugs or wires
•Faulty coil (pack)
•Faulty oxygen sensor(s)
•Faulty fuel injector(s)
•Burned exhaust valve
•Faulty catalytic converter(s)
•Stuck/blocked EGR valve / passages
•Faulty camshaft position sensor
•Defective computer

If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.

Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or unmetered air getting past the airflow sensor, or an EGR valve that is stuck open.

Well their is the basic tune up consisting of just spark plugs. Then their is the whole tune up package which is plugs,wires,and distributor.

The engine will run rough if only one wire has no spark but will run.
I think you have more than that.
For ignition spark system
1- check if you have spark at the coil then
2- check all wires spark with HEI spark tester
3- If only one wire has no spark then
3a- Distributor cap cracks inside or rotor defect
replace Distributor cap and rotor
4- replace wire defect or no spark test with HEI tester.
You will find your problem with this.
Hope it helps.
Hope it helps.