New NGK plats., Napa belden premiums and some Duralast coils from AZ (All done within the last month. Still trying to find out what is causing this. Had performance issues as far acceleration but with the new coils this seems to be fixed, but once the idle kicks in its shakes the steering wheel I do have a code scanner and only one code still: P0303 (Cylinder 3 misfire). I found a couple posts about the fuel pressure regulator going bad in these cars, will be checking that out tonight. Any thoughts?

EDIT : Forgot to add, #3 injector was replaced with a new one from advance a while back. No change whatsover.

Leaky or clogged injector most likely the culprit. Go get one at the junkyard and swap them, try that.

Have you had any coolant loss?

Try swapping the coil, wire & plug from #3 to #1 or #5. Examine the spark plug while it'* out, it could be cracked. If the problem is still on #3 it'* probably an injector problem.

Nope, no coolant loss or leaking to my knowledge. Tank still reads full. Will double check the spark plugs again, just put the new coils on last night. CEL hasn't come back....yet.
Also could it be something else to do with fuel such as the fuel pressure regulator i mentioned in my first post? Someone also suggested a bad PCM but if that were the case I wouldn't be getting a code right? I think I remember a little gasoline smell around the regulator area, gonna double check again later. Thanks for the input.

This is my second set of wires and plugs, Autolite wires from AZ practically disintegrated on me Can't beat the lifetime warranty on Beldens. Also had the IAC and the MAF sensor changed a while back with new parts from AZ.

^ Bump

If you're no longer getting the misfire code you'll want to look for any vacuum leaks.

Here'* something I just heard of the other day. Turn on a propane torch (just turn the propane on don't light it) & move the propane around the intake manifold gasket. If the idle improves it means the intake gasket is bad.

Ya i've heard about something like that. Continues to throw the misfire code, still on cylinder 3. It is running better since the coils but right now the idle is crap.

I still have a feeling of a clogged, or leaky injector.