Mechanics

5.4L

2001 Ford F-150

When starting after the truck has set for several hours it won't stay running. I have to hold the gas on as I put it into gear, after a few miles it will stay running.
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Kasey12359
September 13, 2006.



Sounds like you have a vaccum leak, check underthe hood for visable leaks, repair as needed to recheck system.

2CarPros Ken
Sep 13, 2006.
There is a vaccum line that runs from the PCV valve on passange side valve cover follow that lint up to the intake and look at the rubber end of it. If it is soft or has a hole in it replace it. Do you by chance have a check engine light on? If so with a vaccum leak the a scanner shoud read O2 sensor lean bank one. (NOS) 8)

Tiny
NOS
Sep 13, 2006.