My truck is a 2003 f-250. OK It starts and shuts off, starts and shuts off, starts and runs. Then starts rest of the day fine. Tested the ficm and it has 48.7 all the time. So should not be that. Thought maybe glowplugs but plug it in over night and same thing. So what do I check next?

 

Not sure if the 6.0's have them but my wifes car was doing this and it was the fuel pressure regulator. It was an easy fix. Maybe some on here may know something more. How new are your fuel filters?

 

Check for wire chaffing:

<TABLE style="WIDTH: 588pt; BORDER-COLLAPSE: collapse" border=0 cellSpacing=0 cellPadding=0 width=783 x:str><COLGROUP><COL style="WIDTH: 588pt; mso-width-source: userset; mso-width-alt: 27680" width=783><TBODY><TR style="HEIGHT: 12.9pt" height=17><TD style="BORDER-BOTTOM: #d4d0c8; BORDER-LEFT: #d4d0c8; BACKGROUND-COLOR: transparent; WIDTH: 588pt; HEIGHT: 12.9pt; BORDER-TOP: #d4d0c8; BORDER-RIGHT: #d4d0c8" class=xl26 height=17 width=783>FICM and ICP harness recall</TD></TR><TR style="HEIGHT: 12.9pt" height=17><TD style="BORDER-BOTTOM: #d4d0c8; BORDER-LEFT: #d4d0c8; BACKGROUND-COLOR: transparent; WIDTH: 588pt; HEIGHT: 12.9pt; BORDER-TOP: #d4d0c8; BORDER-RIGHT: #d4d0c8" class=xl24 height=17 width=783>http://www.forddoctorsdts.com/photographs/index1.php</TD></TR><TR style="HEIGHT: 12.9pt" height=17><TD style="BORDER-BOTTOM: #d4d0c8; BORDER-LEFT: #d4d0c8; BACKGROUND-COLOR: transparent; WIDTH: 588pt; HEIGHT: 12.9pt; BORDER-TOP: #d4d0c8; BORDER-RIGHT: #d4d0c8" class=xl24 height=17 width=783>http://www.forddoctorsdts.com/articles/article-05-13.php</TD></TR><TR style="HEIGHT: 12.9pt" height=17><TD style="BORDER-BOTTOM: #d4d0c8; BORDER-LEFT: #d4d0c8; BACKGROUND-COLOR: transparent; WIDTH: 588pt; HEIGHT: 12.9pt; BORDER-TOP: #d4d0c8; BORDER-RIGHT: #d4d0c8" class=xl24 height=17 width=783>http://www.forddoctorsdts.com/articles/article-05-13.php</TD></TR><TR style="HEIGHT: 12.9pt" height=17><TD style="BORDER-BOTTOM: #d4d0c8; BORDER-LEFT: #d4d0c8; BACKGROUND-COLOR: transparent; WIDTH: 588pt; HEIGHT: 12.9pt; BORDER-TOP: #d4d0c8; BORDER-RIGHT: #d4d0c8" class=xl24 height=17 width=783>mms://multimedia.ford.com/seopts/Tech12_250k.wmv</TD></TR><TR style="HEIGHT: 12.9pt" height=17><TD style="BORDER-BOTTOM: #d4d0c8; BORDER-LEFT: #d4d0c8; BACKGROUND-COLOR: transparent; HEIGHT: 12.9pt; BORDER-TOP: #d4d0c8; BORDER-RIGHT: #d4d0c8" class=xl25 height=17>http://turbodieselforums.com/downloads/6.0L%20wire%20chafing.pdf</TD></TR><TR style="HEIGHT: 12.9pt" height=17><TD style="BORDER-BOTTOM: #d4d0c8; BORDER-LEFT: #d4d0c8; BACKGROUND-COLOR: transparent; HEIGHT: 12.9pt; BORDER-TOP: #d4d0c8; BORDER-RIGHT: #d4d0c8" class=xl25 height=17>http://turbodieselforums.com/downloads/Econoline%20Wire%20Chafe.pdf</TD></TR></TBODY></TABLE>

<TABLE style="WIDTH: 588pt; BORDER-COLLAPSE: collapse" border=0 cellSpacing=0 cellPadding=0 width=783 x:str><COLGROUP><COL style="WIDTH: 588pt; mso-width-source: userset; mso-width-alt: 27680" width=783><TBODY><TR style="HEIGHT: 12.9pt" height=17><TD style="BORDER-BOTTOM: #d4d0c8; BORDER-LEFT: #d4d0c8; BACKGROUND-COLOR: yellow; WIDTH: 588pt; HEIGHT: 12.9pt; BORDER-TOP: #d4d0c8; BORDER-RIGHT: #d4d0c8" class=xl25 height=17 width=783>Wire Chaffing Locations</TD></TR><TR style="HEIGHT: 12.9pt" height=17><TD style="BORDER-BOTTOM: #d4d0c8; BORDER-LEFT: #d4d0c8; BACKGROUND-COLOR: yellow; WIDTH: 588pt; HEIGHT: 12.9pt; BORDER-TOP: #d4d0c8; BORDER-RIGHT: #d4d0c8" class=xl24 height=17 width=783>http://www.thedieselgarage.com/forums/showthread.php?t=58336</TD></TR><TR style="HEIGHT: 12.9pt" height=17><TD style="BORDER-BOTTOM: #d4d0c8; BORDER-LEFT: #d4d0c8; BACKGROUND-COLOR: yellow; WIDTH: 588pt; HEIGHT: 12.9pt; BORDER-TOP: #d4d0c8; BORDER-RIGHT: #d4d0c8" class=xl26 height=17 width=783>Upper left valve cover or valve cover stud, near the FICM</TD></TR><TR style="HEIGHT: 12.9pt" height=17><TD style="BORDER-BOTTOM: #d4d0c8; BORDER-LEFT: #d4d0c8; BACKGROUND-COLOR: yellow; WIDTH: 588pt; HEIGHT: 12.9pt; BORDER-TOP: #d4d0c8; BORDER-RIGHT: #d4d0c8" class=xl26 height=17 width=783>Idler pulley under the thermostat (wiring routed around the power steering pump)</TD></TR><TR style="HEIGHT: 12.9pt" height=17><TD style="BORDER-BOTTOM: #d4d0c8; BORDER-LEFT: #d4d0c8; BACKGROUND-COLOR: yellow; WIDTH: 588pt; HEIGHT: 12.9pt; BORDER-TOP: #d4d0c8; BORDER-RIGHT: #d4d0c8" class=xl26 height=17 width=783>Left front valve cover hold-down bolts/studs</TD></TR><TR style="HEIGHT: 12.9pt" height=17><TD style="BORDER-BOTTOM: #d4d0c8; BORDER-LEFT: #d4d0c8; BACKGROUND-COLOR: yellow; WIDTH: 588pt; HEIGHT: 12.9pt; BORDER-TOP: #d4d0c8; BORDER-RIGHT: #d4d0c8" class=xl26 height=17 width=783>Exhaust Pressure (EP) sensor bracket at thermostat housing</TD></TR><TR style="HEIGHT: 12.9pt" height=17><TD style="BORDER-BOTTOM: #d4d0c8; BORDER-LEFT: #d4d0c8; BACKGROUND-COLOR: yellow; WIDTH: 588pt; HEIGHT: 12.9pt; BORDER-TOP: #d4d0c8; BORDER-RIGHT: #d4d0c8" class=xl26 height=17 width=783>Right valve cover at Glow Plug Control Module (GPCM)</TD></TR><TR style="HEIGHT: 12.9pt" height=17><TD style="BORDER-BOTTOM: #d4d0c8; BORDER-LEFT: #d4d0c8; BACKGROUND-COLOR: yellow; WIDTH: 588pt; HEIGHT: 12.9pt; BORDER-TOP: #d4d0c8; BORDER-RIGHT: #d4d0c8" class=xl26 height=17 width=783>Accelerator Pedal pivot point under dash</TD></TR><TR style="HEIGHT: 12.9pt" height=17><TD style="BORDER-BOTTOM: #d4d0c8; BORDER-LEFT: #d4d0c8; BACKGROUND-COLOR: yellow; WIDTH: 588pt; HEIGHT: 12.9pt; BORDER-TOP: #d4d0c8; BORDER-RIGHT: #d4d0c8" class=xl26 height=17 width=783>PCM harness at battery box</TD></TR><TR style="HEIGHT: 12.9pt" height=17><TD style="BORDER-BOTTOM: #d4d0c8; BORDER-LEFT: #d4d0c8; BACKGROUND-COLOR: yellow; WIDTH: 588pt; HEIGHT: 12.9pt; BORDER-TOP: #d4d0c8; BORDER-RIGHT: #d4d0c8" class=xl26 height=17 width=783>CKP wiring near A/C compressor and belt tensioner</TD></TR><TR style="HEIGHT: 12.9pt" height=17><TD style="BORDER-BOTTOM: #d4d0c8; BORDER-LEFT: #d4d0c8; BACKGROUND-COLOR: yellow; WIDTH: 588pt; HEIGHT: 12.9pt; BORDER-TOP: #d4d0c8; BORDER-RIGHT: #d4d0c8" class=xl26 height=17 width=783>12A581 harness circuit 1044 (WH/YE) near connector C1443 (left rear corner of engine compartment)</TD></TR><TR style="HEIGHT: 12.9pt" height=17><TD style="BORDER-BOTTOM: #d4d0c8; BORDER-LEFT: #d4d0c8; BACKGROUND-COLOR: yellow; WIDTH: 588pt; HEIGHT: 12.9pt; BORDER-TOP: #d4d0c8; BORDER-RIGHT: #d4d0c8" class=xl26 height=17 width=783>Front left of intake manifold near breather tube and air inlet duct</TD></TR><TR style="HEIGHT: 12.9pt" height=17><TD style="BORDER-BOTTOM: #d4d0c8; BORDER-LEFT: #d4d0c8; BACKGROUND-COLOR: yellow; WIDTH: 588pt; HEIGHT: 12.9pt; BORDER-TOP: #d4d0c8; BORDER-RIGHT: #d4d0c8" class=xl26 height=17 width=783>Injector harnesses</TD></TR><TR style="HEIGHT: 12.9pt" height=17><TD style="BORDER-BOTTOM: #d4d0c8; BORDER-LEFT: #d4d0c8; BACKGROUND-COLOR: yellow; WIDTH: 588pt; HEIGHT: 12.9pt; BORDER-TOP: #d4d0c8; BORDER-RIGHT: #d4d0c8" class=xl26 height=17 width=783 x:str="Check injector harnesses and FICM harness for backed out or bent pins ">Check injector harnesses and FICM harness for backed out or bent pins </TD></TR></TBODY></TABLE>