I'm a big fan of change one thing and see if the problem is fixed. I mean there's nothing wrong with doing a tuneup kit as regular maintenance but you always want to be careful not to do three things to try to fix one problem.
You're telling us the vehicle was running fine until you did a crank sensor replacement. And then it ran again but now you get code 43. And everything you've done doesn't make that code 43 go away.
I think you're right back to what's up with that crank sensor and maybe it's just not quite in there like it ought to be.
Oh and earlier you asked:
Quote:
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Originally Posted by hoofan
My question is, when the CE light flashes, does it ALWAYS reflect an emission problem?
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No. The Check Engine light could go on for any of the things it watches.
http://www.allpar.com/fix/80s-codes.html