I did a vacuum leak check, I could find no vacuum leak. I am pulling about 17 in/Hg vacuum at idle. I did a leak check around the intake manifold using the carb cleaner method, no leak detected. Tried a new PCV valve. Pulled the wires off the coil pack one by one while engine was idling, I saw good spark on all coils. MAF is new
I also get missfire errors 304,305,and 306 which are missfires on cylinders 4,5,and 6. I assume because the computer is setting the fuel to that side too lean to compensate for the too rich error it is recieving on the 02 sensor. Does this mean that the 02 sensor on that side may be bad. Or would the too lean from the other bank cause the misfires on 4,5,and 6
Plug wires are the next thing, they should be replaced anyway.
Last edited by bergie44; 01-22-2007 at 07:00 PM.