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O.K. Just finished over the weekend replacing that small rubber 90 degree elbow beneath the upper radiator hose and the end of the manifold.
That was a bear for me to remove & replace while not removing the manifold.
After replacement I cleared the code with my OBD2 reader and was hoping for the best. After about 75 miles of driving, the CEL is back on again.
I connected my reader and pulled the same, good 'ole code of P0133. As I said in another post, I have already replaced both front and rear oxygen sensors last year.
Any more thoughts before I take this car to a diagnostic computer?
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