i cant get rid of code 4 . i tried the search already but i cant fix it
i change the crank, wires that go to the dist

it wont go over 1500 rpm

 

I had a similiar problem although mine wouldn't go above 3200
there were a few posts with the same thing most of them said something about the crank angle sensor housing within the dist, you could either replace the dist or replace the housing
I went the expensive route and got a dizzy