do i need to go to a dealer to find an answer to my problem ?

What is your question?

I have replaced my spark plugs, wires dist cap, dist pickup coil, coil map sensor tps, vss and more but the van starts to missfire within i t0 2 miles after i start it up cold & from then on. Nothing seems to fix it. Then i decided to disconnect the vss and it runs beautiful, no misses. the problem is that my speedometer & abs quit working & the tranny doesn't shift proper ! but i can go up hills. Is it my abs control module ? The vss wires trace back to the module.Oh and it has been put on the diagnostic machine and it says there are no problems...go figure !