1991 dodge caravan will not hold speed

I have a 91 caravan replaced wires plugs cap rotor ect fuel filter fuel pump. It will idle just fine and runs when throttle it fully depressed but will not hold a constant speed?

--
Posted at author's request, using moderated http://www.AutoBoardz.com interface
Thread archive:
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.