accord acceleration problem

hello,

I've had this problem on my 2001 4-cyl accord (automatic) for a while. It has 55K miles on it. When accelerating from a low speed, the acceleration is often not smooth, it feels like its being kicked from behind. The problem has not gotten worse nor better. I've posted before and gotten a few suggestions and want to get advice on the comments received.

1. Automatic transmission issue - extended warranty. I checked online and this appears to be for 6 cyl cars and am not sure if my problem is really that.

1. EGR valve - how to diagnose this? I have no check engine light nor code.

2. Fuel filter - I was told in another forum that this does not require replacement.

1. spark plugs - I was told in another forum that platinum types don't require repl till 100K miles.

2. Air filter - replaced once, but didn't help.

1. Air Intake manifold - how to check if I need to get this cleaned?

2. Anything else??

Thanks for any help!