EF-Jordan
Active Member
It runs rough the whole time the car is running hot or cold and thru all rpm's. Cylinder misfire codes for cylinders 2-6 and p1399 for multiple cylinder misfire. So far I changed the spark plugs and the ecu so far with no change in how it's running. Also swapped the coil pack from cylinder 1 with cylinder 4 and cylinder 1 still no misfire. Confused on where to go from here since cylinder one is acting fine. No other codes besides misfire codes and haven't checked anything else. Help! I was going to check the EGR valve and make sure the ports werent gummed up.
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