2003 5.4 Problems Please Help
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Joined: Sep 2006
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From: socal
2003 5.4 Problems Please Help
Last night I drove my truck and all seemed to be fine.This morning I go to start my truck and the idle is very rough as well as the check engine light appears.I have read in some of the past post that it might possibly be the PCV valve or hose connected to.Can some one please show me the hose and valve mentioned?Tommorow morning I will get my code reader back from my cousin and post the codes. Thanks
Codes that came up:
P0171
P0303
P0304
Codes that came up:
P0171
P0303
P0304
Last edited by paulh; Dec 25, 2010 at 11:04 PM. Reason: Updated Info
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Joined: Dec 2006
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From: Joplin MO
You probably have a vacuum leak and you may need new spark plugs or cops in cylinders 3 and 4.
The PCV valve is in the passenger side valve cover. Follow the hose from it to the back of the intake manifold, the rubber elbow back there rots out.
The PCV valve is in the passenger side valve cover. Follow the hose from it to the back of the intake manifold, the rubber elbow back there rots out.