Runs rough when warm at idle, engine shakes, almost stalls. Engine light had coded a bunch of codes( general misfire, MAP sensor, etc), but I had cleared and last time it came on I had it checked right after it came on; it showed lean mixture in bank 1 and 4. I have replaced EGR, idle flow sensor, throttle position senor, MAP sensor, repaired two vacuum leaks, run Techron fuel cleaner. Some people say it has PCV valve other say just orifice which I think I found near ignition coils front and back and cleaned them. Have not checked O2 sensors. Has lots of vacuum in line from right side of manifold to back "PCV" orifice little to none on front "PCV" orifice, and little in small lines going to sensors. I have sprayed lines with carburetor cleaner and all are open. Appreciate your help.
have the same problem?
Monday, February 28th, 2011 AT 2:19 PM