For anyone else wondering I just typed in "step by step fuel pump install" at the end of the link into the advanced search. At first I didn't have the full link, only the number after .php, but typing that number into advanced search I found other posts with the full link. This seems like a domain change issue. Another workaround would be to replace "showthread.php?" in the link with "threads/" and add the unique number to the end. Also change http:// to https://
For example,
...http://www.lincolnvscadillac.com/forum/showthread.php?62671-Step-by-Step-fuel-pump-install...
Change to
...https://www.lincolnvscadillac.com/forum/threads/step-by-step-fuel-pump-install.62671/...