I found this diagram. The only f-150 with a 4.2
this was the heading:
1998 ford pickup f150
fig. 7: vacuum diagram (f-150 & van - calibration no. 8-44r-r05 (nlt1) - 4.2l)
courtesy of ford motor co.
Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Monday, February 13th, 2012 AT 7:45 AM