I was coming back home yesterday and the truck just died, no sputtering nothing. I was low on fuel but not enough to be out. Pulled into a driveway and after about 5 tries cranking it started. Pulled in to gas station and threw some fuel in. Started right up and died again. Same scenario, cranked a few times and started. Went back to work and then when I left work same thing, no start. After cranking again about 5 times started, made it home let it idle for about 20 min. This morning she started right up. Went to work no problems. Went to leave for lunch no start. Cranked about 5 time and she started. Came home thinking it was a bad CPS, had a spare put it in and no start after cranking about 8 times.... WTH... Suggestions please or does she need a trip to the stealership.
I have personal experience with a bad CPS out of the box, so that could still be the culprit as the items you described are the normal symptoms for this. Doe you have access to any scan tools so we can get some more info on the truck?
Ok I had another CPS and put it in (I had two spares) did not work. Pulled the plug from the ICP and had a decent amount of oil on it. Cleaned it out, sprayed and dried put back in...no start
You may have a bad IDM thats what im dealing with in my OBS. I thought i had a bad cps too but no dice. im gonna swap my super duty IDM in tonight to see if thats the culprit. You should find someone with a working IDM and swap it in yours real quick(3 or 4 bolts and 1 bolt on the connector) and see if that fixes the problem. IDMs are compatible from 94.5-03 7.3 just so you know
Ok so you all read the post about the truck just died while driving. Did not have a scanner so paid to have it scanned. Here is what I got back....
Scanned for codes- P0284, P0603, P0477, P1211, P1275
Here is what they said.
Found central junction box faulty and cutting power supply to the PCM when warm (could this be from cranking the crap out of it trying to get it to start?)
Found ICP Sensor leaking through the connector(yeah I found this out yesterday when I pulled the plug off)
HPOP Max output about 900psi below specs (perhaps because of a bad IPR)
Here is what they said I need;
ICP
IPR
HPOP
Central Junction Box
Thoughts on this, what does each code mean... Little assistance please
Find somebody who really knows these truck or take it to the dealership. These clowns are just looking-up the codes and wanting to replace Everything related.
Here's what it could also be;
284 from the grey CPS
603 from dead batteries or bad fuesible link connections
477 from EBPV tube carboned-up
1211 from the bullydogs programming
1275 UVCH connection or maybe even the new CPS (not sure on the CPS with a 1275)
If they change the IPR/ICP/HPOP it might fix the problem because you've just acquired an entire HiPres Oil system!
I think, chances are, they don't know what their doing and are just throwing parts (on YOUR dime) to fix it. It's just not possible you need ALL that.
When it dies you can unplug the ICP, as a Test, and the PCM will set a default value for the IPR to run with. If just unplugging makes it start, it was the ICP. You can remove and disassemble/clean the IPR to see if it fixes it before you buy another one (also check the plug for frayed wires or a lose "tin nut" that's allowing the coil to slide around). Look at the drivers side fenderwell top, next to the airbox, for a black cover (marked High Voltage or something) that is the transistion from the B+ to the fuseible links and a common failure point on an '02. ALL FOR FREE!
But, ultimately, if none of that has a problem, seek professional help from somebody else because those guys are gonna cost you because of their lack of 7.3 knowledge....
Yeah I when I looked at what they said I was a bit put off considering I was the one that told them what I thought the problem to be. Bummer is I have to wait until tomorrow to pick it up as it would not start. Didn't even think about pulling the plug on the ICP.
This morning went over to pick up the truck and it started right up as normal. I am about 2 miles from home so I gingerly drove back. It died on one of the side streets to my house. Unplugged the ICP and it started right up. Again got in while it was running and it died right across the street from my house before I could turn in.
Ordered a new ICP but wont be here until midweek. In the meantime I did notice I have some fresh oil in the valley just below the IPR. I may have a bad O ring happening here. All of my other O rings on the HPOP were replaced 2 years ago and they look fine and with no oil residue on them. Thought on where this Oil is coming from or do you think my assumption is correct? Won't reall know until I can get it to start and get it up into the garage to poke around.
Mine done the same thing. It was bc the fuel pump on top of the Motor lost pressure got low. It has to stay above 300 if it drops below it will cut off. Have to replace the pump.
So I replaced the IPC, IPR and the CPS and I have the same issue. Starts when cold sounds and feels good but the dies as if you turned the key off.
Aside from that what else could this culprit be? I don't want to keep throwing money at it like the 300 bucks I just did for not. Is it dealership time as this is cutting into my summer weekends, not trips.
After replacing the CPS, IPR, and IPC I still had the same issue. So I went by and spoke to the head Diesel mechanic at my local Ford store and explained what has been happening, what I've done and the codes I pulled. First thing he said was to pull my chip out.
I originally had a superchip gold bar chip in it, 80HP 100 TQ. Replaced it with a BD 6 position and got rid of it because I didn't like the shift points and put back in the Superchip gold bar chip about 10 months ago, the superchip is probably 10 years old. Anyway I pulled out the chip and let the engine idle for about 30 minutes and the kept a rev at 2000 for about 5 minutes and then back to idle for 5 min. and shut it off. Let sit for about 10 min and it started back up, did this several times before I decided to venture out around the block a few times. When I did this last night (minus the driving) upon restarting it died and then wouldn't turn over. Today as I said started it several times before driving with chip out and so far it has not died.
So it seems my chip has taken a dump. Of course I had to buy the IPR, ICP and replace the CPS before my dumb *** decided to pull the chip out. I have not driven very far but tomorrow I will put it to the test and see if it dies on me. If it doesn't looks like I will need to buy a new chip or programmer. Suggestions on a chip or programmer for this beast? Because without one it has no juice.
I also had a superchip gold bar that failed after 7 yrs of good serivce... I would recommend the Hydra 17 position chip from PHP, great performance, great options and great company!
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