90 Chevy Camaro RS

My 90 Chevy Camaro RS surges all the way through 3rd gear. I just had new pluges and wires installed, and retimed my distributor. It also idles
extremely low after the car gets hot, and sometimes dies while in nuetral. Any ideas what this problem can be?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

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.