94 surging/bucking problem



to followup on my followup: i finally found the surging problem
there is a hard plastic tube that goes from the top of the (valve cover?) to the throttle body underneath the thin plastic engine cover on the right side. one end of this tube has a 2" rubber hose adapter (with 2 different inside diameters!) that had a crack in it. this evidently opened up when it got warm and closed when it slightly flexed, letting additional air into the throttle body. since this is after the MAF and IAC, it tricked the computer into increasing the gas delivered.
regards, charlie cave creek, az
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.