How do you know this problem isn't unrelated to your ealier codes and might be something serious like IMS or such?
I am continually amazed at the number of people who run their cars or try to limp them home when encountering engine issues. This car is known for them and if mine ever died, the first thing I would do is call AAA for a tow rather than try to run it not knowing what the issue(s) might be.
I wouldn't run the car until I had the codes read and was more sure it relates to your earlier issues, you could seriously compound the difficulties (and $$) if you did.
