I have a 1998 F150 5.4L that has thrown P0456 codes twice in 2 years. Both times I brought it to my local dealer for a smoke test and they ended up fixing broken vacuum lines. The Ford dealer said the actual part was discontinued but the part number is F65Z 9E498. Any suggestions, diagrams or alternatives to fixing the issue permanently? Appreciate any assistance.

 

Search Ebay for the part
Try Obsolete Parts too

 

Its a vacuum harness. Repair necessary tubing breaks with 1/8" fuel hose from auto store for a couple $.