confused
need some help please!!!!!
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New User
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need some help please!!!!!
well gentlean im having a problem with my 7.3 ill be cruising along around 40 mph and then all of the sudden my truck will kick like all engine noise will stop and kick right back in again and i just keep rattling my head about this and cannot figure out where to start with this one its like the ficm decides to shut off and turn back on again or maybe the fpr (fuel pressure regulator) just keeps jumping around or the tps is going out and my check engine light has only come on once and it ran like it was supposed to when the light kicked on when it turned off ran like hell again please help this is my only vehicle any words of advice or if someone has had this problem before how did you fix it i dont even know where to begin with this you guys have helped in the past with some previous vehicls ive had and the advice was excellant
Elder User
Joined: Mar 2012
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From: Quaker Hill
Have you ever changed your CPS? If not, get a good one from either Ford or RiffRaff. Aftermarket ones tend to be defective. FYI, if you have a 7.3, there's no FICM. You have a IDM. I know the FICM's tend to go bad on the 6.0, at least that's what I've heard, but an IDM doesn't usually go out as frequently.
It's a Van Gogh
Joined: Feb 2010
Posts: 7,813
Likes: 1,335
From: Elk Grove, CA
If the check engine light came on it set a code, if you can read the code it may help. Usually generic code readers cannot read the 7.3 codes, but whatever you can get is better than nothing. If you have an android phone and some time, buy a fleabay bluetooth obdii reader and get the Torque app.
Sounds electric. My first thought is also CPS, get one at Ford or IH dealer, better than the aftermarket ones. Easy peasy, one bolt, swap the part and plug it in. Helps to have long arms tho.
If you are handy with a multimeter give the PDF below a shot to check your IDM. Seems like a rash of IDMs killed by water recently.
Could be the harness on the driver side chafing on the valve cover just below the 42 pin connector. Easy to check, pull out the bolt holding the connector together and inspect the wires where they cross the vc.
Could also be a sketchy UVCH connector, check this link for good info on testing that system.
Welcome to FTE!
Sounds electric. My first thought is also CPS, get one at Ford or IH dealer, better than the aftermarket ones. Easy peasy, one bolt, swap the part and plug it in. Helps to have long arms tho.
If you are handy with a multimeter give the PDF below a shot to check your IDM. Seems like a rash of IDMs killed by water recently.
Could be the harness on the driver side chafing on the valve cover just below the 42 pin connector. Easy to check, pull out the bolt holding the connector together and inspect the wires where they cross the vc.
Could also be a sketchy UVCH connector, check this link for good info on testing that system.
Welcome to FTE!
Super Moderator
Joined: May 2004
Posts: 29,380
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From: Central Coast of CA
According to his profile, he has a 2006, so based on that and his FICM comment, I'm moving this thread over to the 6.0L PSD forum.
Stewart
Edit: John, if the OP posts again and I've moved this thread erroneously, please smack it back to the 7.3L PSD forum. Thanks bud.
Stewart
Edit: John, if the OP posts again and I've moved this thread erroneously, please smack it back to the 7.3L PSD forum. Thanks bud.
Last edited by Stewart_H; Dec 3, 2013 at 12:08 AM.
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I have the 6.0 as well but I also have the 7.3 and I was trying reference it to when the 6.0 ficm starts bugging it kicks like a mule at least mine did any its a 2001 ford f350 SD with the 7.3l in it
Lead Driver
Joined: Mar 2010
Posts: 5,505
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From: Woodbridge, Ontario, CA
Common problems on a 7.3L that I can remember off the top of my head that COULD cause driveability symptoms like you describe are as follows:
-CMP sensors (EVERY 7.3L owner knows about this by now, and should have been addressed with FSA 07S57).
-IDMs could be known as "water traps" due to where they are situated, more of a problem on E-Series applications, but have happened on some F-Series too.
-Fuel heaters shorting out, and shutting down the PCM. Usually blows a fuse though.
-IPR valve spool nuts that loosen off and fall into the "valley" of the "VEE".
-UVC harnesses like to vibrate loose, and out of the valve cover thereby causing an open circuit to some injector/glow plug circuits.
And in a nutshell, those are the only 7.3L quirks that I can recall off the top of my head. Just bear in mind as a dealer tech, it's been many moons since I've been under the hood and into a 7.3L due to their age. Also, those are only GUESSES, since I don't have DTC information. And yes, if you have a chip in the PCM, remove it.
-CMP sensors (EVERY 7.3L owner knows about this by now, and should have been addressed with FSA 07S57).
-IDMs could be known as "water traps" due to where they are situated, more of a problem on E-Series applications, but have happened on some F-Series too.
-Fuel heaters shorting out, and shutting down the PCM. Usually blows a fuse though.
-IPR valve spool nuts that loosen off and fall into the "valley" of the "VEE".
-UVC harnesses like to vibrate loose, and out of the valve cover thereby causing an open circuit to some injector/glow plug circuits.
And in a nutshell, those are the only 7.3L quirks that I can recall off the top of my head. Just bear in mind as a dealer tech, it's been many moons since I've been under the hood and into a 7.3L due to their age. Also, those are only GUESSES, since I don't have DTC information. And yes, if you have a chip in the PCM, remove it.