Ok I need a bit of car help

[95z28]

Not realy sure at all what the problem might be. i posted it a while back. the car like sputters pretty hardcore, almost feels like the engine is jumping around. but the thing that makes me confused is that it did it the day i posted about it and the day after and then it just randomly stoped and tonight it started doing it again. so far the ideas i got are

Injectors
Fuel Filter
Plugs
Plug wires

Possible opti ??

not realy sure, dad isnt being too helpful either ( odds are he knows just wont tell me )

Edit:

Seems like if its colder outside and i just start it up and go it doesnt have this problem. but if i leave it to warm up it will. and on warmer days it wont do it. . . sort of hit and miss thats whats throwing me off.


P.S. i hate cars

[94 formula]

Can you post a little more information. How many miles? Has it ever had a tune up? Your describing exactly what my car did and I replaced plugs, wires, coil, coil wire, and 02's, I'm in the process of opti cause of them did the trick.

[95z28]

95 ,with 50 k on it. im actually just about to check plugs/plug wires. idk its just frusterating

[94 formula]

These are supposed to be 100k for plugs and wires but they don't always last that long. I'd just do a plug and wire change to start with because they are almost 10 years old now. A scanner would be very useful also. Keep us posted how the plug and wires are and if it continues doing this.

[JPowers]

That sounds similar to what mine did a while back. Does it get real sluggish and unresponsive sometimes when you excelerate? Mine ended up being the sparkplugs. I had mine diagnosed at the chevy dealer for $79. Went ahead and had it fixed there and they put the $79 towards the repair costs (about $400 to replace plugs, wires, and all the regular tune-up stuff).

[Injuneer]

Did either of the "sputter" events happen while it was raining or extremely humid? Water and the Opti don't get a long very well, and high humidity/condensation can exacerbate wire, coil and IC Module problems.

[95z28]

Actualy both times were like after it had rained, never made it around to the plugs today got called into work as i was geting into the garage.