Vehicle surges an no power at mid range , Timing is controled by ecm to -48 deg egr goes to 60-80% car runs bad till full throttle, ccp opens fully what controls the negative timing and egr open? Coolant sensor is ok,no clogged cat converter

FIX posted 8/24/2007

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