The car runs rough at idle but okay off idle. It has a check engine light and missfire codes for # 4/6 cylinders. So we replace the wires / cap/ rotor/ plugs and it runs no different.

next the injector drop test and it shows less rpm drop when 4 or 6 are shut...

FIX posted 11/21/2004

iATN Members:
Login to view full TechHelp request
Auto Repair Pros:
Join iATN to read this TechHelp request
Vehicle Owners:
Find a nearby iATN member to repair your vehicle