1999 Honda Accord Car stalls when I give gas. In park or d

SO where do I start. I was getting an egr valve mailfunction. Replaced egr valve, no change. Removed and cleaned upper intake manifold, cleaned egr port, removed fuel rail and injectors cleaned them. Put everything back together. Started the car and it runs like crap. While in park it idles fine but when I give it gas its like there is a delay for engine to revup, then it stalls. If I hold the gas on at about 4000 rpms it goes to 4k then jumps to 2k and back and forth. I thought it might need to burn off some carb cleaner but its been doing it for sometime now. Any help would be great.