I REPLACED THE 1998 5.4L (bad valve smacked head & piston) WITH A 2000 5.4L EXPEDITION ENGINE. I USED THE HARNESS THAT CAME THE 2000 ENGINE. IT STARTS N RUNS GOOD. BUT CEL IS ON. I RAN A SCANNER ON IT, CODES P0155- P0135- P1113-N A COUPLE OTHERS ON IT. I DID THE LIVE DATA SCAN.
I REPLACED THE 02 SENSOR ON THE DRIVE SIDE & WAS GOING TO REPLACED THE PASS SIDE AS WELL.. I ALSO REPLACED THE IAT SENSOR AS WELL. WHAT DO YOU THINK
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