Truck killing issue...Need help.
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Truck killing issue...Need help.
2001 F350 4x4 7.3L, 223K miles
I have researched this issue for about three months now and have yet to find the fix. So here is the issue in a nutshell:
Truck will kill every single time I drive thru one particular intersection. In addition, it has done the same thing in about a half dozen other places. One time it actually would sit and run for me while I wiggled wires and such. I was able to restart it every time but most of the time it sounded like it was firing on one bank. I was able to unplug the ICP sensor and everything would work. This sensor was replaced three days prior to the issue starting. I have since replaced the the IPR and CPS as well. Had it plugged in while it happened and no codes were ever thrown.
There is more to the story, ask any questions you need and I should be able to answer. This is all very intermittent, three times a day to 500 miles apart. Please help, I have seen very similar issues on many forums and never did any of them come to a resolution. Some have even sold their trucks, I can not afford to be rid of this truck.
I have researched this issue for about three months now and have yet to find the fix. So here is the issue in a nutshell:
Truck will kill every single time I drive thru one particular intersection. In addition, it has done the same thing in about a half dozen other places. One time it actually would sit and run for me while I wiggled wires and such. I was able to restart it every time but most of the time it sounded like it was firing on one bank. I was able to unplug the ICP sensor and everything would work. This sensor was replaced three days prior to the issue starting. I have since replaced the the IPR and CPS as well. Had it plugged in while it happened and no codes were ever thrown.
There is more to the story, ask any questions you need and I should be able to answer. This is all very intermittent, three times a day to 500 miles apart. Please help, I have seen very similar issues on many forums and never did any of them come to a resolution. Some have even sold their trucks, I can not afford to be rid of this truck.
Fleet Owner
Joined: Apr 2012
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From: Spanaway
Chafing of the wiring harness I would bet. Trace the IPR back to the
harness and see if you can find any places where it could be rubbing .
If you had a 6.0 I could tell you where to look. Can you watch live data
for the items you replaced and see if one drops out when or just before it
dies? A data logging tool like the AE or a Snap-On scanner would come in
handy to do this.
Sean
harness and see if you can find any places where it could be rubbing .
If you had a 6.0 I could tell you where to look. Can you watch live data
for the items you replaced and see if one drops out when or just before it
dies? A data logging tool like the AE or a Snap-On scanner would come in
handy to do this.
Sean
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I've checked wires all the way back...still no cure. Replacing UVCHs this week. Can not beleive the issues I have. Everyhing is good when the brand new ICP is unplugged. The craziest thing about it all is that the only places I do have issues, when everything is plugged in, so happens to be right next to radio towers. It will die in the same exact places everytime...wet/dry, hot/cold, empty/full, early/late. Please, I need more input.
Post Fiend
Joined: Sep 2003
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From: Mesa AZ
I've checked wires all the way back...still no cure. Replacing UVCHs this week. Can not beleive the issues I have. Everyhing is good when the brand new ICP is unplugged. The craziest thing about it all is that the only places I do have issues, when everything is plugged in, so happens to be right next to radio towers. It will die in the same exact places everytime...wet/dry, hot/cold, empty/full, early/late. Please, I need more input.
The only two electromagnet items that will kill the engine are the CPS and IPR coil. I have had 3 IPR coil failures in the past 6 months. One was my own personal truck and the other two were work vehicles (both were CAT engines).
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I just replaced the driver's side UVCH last night, no change. I replaced the CPS with one from International, no change. Replaced IPR, no change. Went thru most of the wire harness last night as well, back side of the IPR plug looked a little suspect so i'm gonna replace that soon. No HIDs. I do have a Bully Dog chip that i plan on unplugging and trying, haven't been too happy with it since i got the truck anyways. Anyone ever heard of the newer style ICP202 causing issues? It all started after i installed that. Took it back and got another one thinking it was bad, no dice.
Elder User
Joined: Feb 2006
Posts: 765
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From: Eastern Ohio
Since this started with the ICP and don't have the problem without it, I would look there. How is the plug the ICP? No oil in it, grommet on it, connections and wire look good?
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Took the Bully Dog chip out last night to see if it was that...No Dice! Killed in the same exact spot yet again. As I sat in the parking lot at school, about a half mile away or so spitting and sputtering most of the way, it finally smoothed out. Tried a few things like turning the lights on and off, high and low beams. I noticed that when I turned the wheels left or right of straight the idle would increase and sputter a bit. Gonna try to plug it into the computer I used before now that the chip is out. Gonna also try to poke around in the steering column a bit and see what I see. Any other ideas? Really getting stressed these days, this is my only ride and I don't have the cash to bring it anywhere at this time.
Fleet Owner
Joined: Apr 2012
Posts: 27,307
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From: Spanaway
It sounds like you going to be looking in the right places.
Check all around the wire for any chafing. Also look
in the engine compartment where the steering column
connects to the box and see if some how a harness
is rubbing on it or if one is rubbing on the air-filter.
I hear that is also a chaffing point.
Sean
Check all around the wire for any chafing. Also look
in the engine compartment where the steering column
connects to the box and see if some how a harness
is rubbing on it or if one is rubbing on the air-filter.
I hear that is also a chaffing point.
Sean
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Yet another failed attempt. Wasn't able to plug it into the computer. No chaffed wires in the steering column or behind the stereo or anywhere else in the vicinity. Disconnected the PIAAs as something new to try, but not likely the issue. Seems to be a hopeless cause. Hopefully I can get my buddy to swap ECMs and ICPs with me for a test drive, otherwise I've hit a wall.
Senior User
Joined: May 2011
Posts: 454
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From: Portland, OR
Are you having any fuses blow in conjunction with these issues?
You said you replaced one UVCH, was this a shot in the dark or did you ohm out the UVCH at the VC gasket plug, 42 pin connector at the DS VC? Do you need assistance/instructions for this. No sweat, just ask.
Check for chafe points on the main harness bundle at the DS VC (look underside of the bundle, carefully) and the DS shock mount. Even if you find nothing, add some tape and loom as insurance. These are problematic locations.
Might try using contact cleaner and fresh dielectric grease on your major harness connections at the IDM, PCM, 42 pin, etc. Happening more and more as our trucks age.
Where are you located? We'll see if someone with AE is close by.
You said you replaced one UVCH, was this a shot in the dark or did you ohm out the UVCH at the VC gasket plug, 42 pin connector at the DS VC? Do you need assistance/instructions for this. No sweat, just ask.
Check for chafe points on the main harness bundle at the DS VC (look underside of the bundle, carefully) and the DS shock mount. Even if you find nothing, add some tape and loom as insurance. These are problematic locations.
Might try using contact cleaner and fresh dielectric grease on your major harness connections at the IDM, PCM, 42 pin, etc. Happening more and more as our trucks age.
Where are you located? We'll see if someone with AE is close by.
Freshman User
Joined: Mar 2011
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From: El Dorado, AR
Did you say that your stalls always or nearly always happen near radio towers? If so, I would get AE on it and run a trace. It sounds like a faulty connection or bad ground is causing strong RF fields to interfere with either a serial data stream (as between the PCM and IDM) or one of the sensors that use AC signals (MAP or CPS for example). Hope that helps. Best of luck.