7.3 diesel stalls for no reason.... Changed fuel filter. Any ideas?

Does it have a alarm system? Ecm fault idle down relay?

what year?? does it die at high temp??

I'm having the same problem on my 2001 Excursion. It doesn't get hot, just either idles for a while and dies, or just dies going down the road. It doesn't give any warning at all, just suddenly shuts off. Any thoughts?

Does a eng warning light come on? And the alarm system may be playing up

No ENG light. I'm not getting any warnings or codes.

If it has a diesel pump that means 1 : your idle position is not properly adjusted 2: your diesel cutout solinite is not working properly 3 : the plunger r getting worn out !

Look for fuel leak cause I have same problem n found fuel was leaking from injector pipe so change it n the problem was solve

I fixed this same issue on my 2003 diesel excursion 7.3 liter and guess what it's a recall free fix. The Cps module is defective. Cam shaft position sensor is faulty and simply shuts the truck off.

Have a 2002 7.3 excursion and the consensus seems to be the CPS sensor....cam positioning sensor. It was the subject of a 2008 recall. Location of the offending sensor is at the 10:oclock position at the front of the crank shaft....its attached to the timing mark arm. only 1 10mm bolt holds it in. If the sensor in your truck is black in color then its the old one and its possible to have it replaced for free at the dealership for free per the recall. The new sensors are a light grey in color and are around 30 bucks at the dealership.......do not buy an aftermarket part from a chinese auto parts store....don't ask me how I know. PS....most 7.3 owners carry an extra CPS in the glovebox.....30 bucks is cheaper than a tow truck.

I have a 2002 F350 7.3 as well. In the early days, the dealer suspected cam sensor but since he could not diagnose, he would not fix (under warranty). Years later comes the recall. Have replaced cam sensor twice. This thing still stalls. I can be idling, I can be travelling at 70 mph or any in between. No warning. It will restart immediately, but only if you turn off key first. If you simply turn key to start without doing so, it will crank all day without starting. I have 175,000 miles in 2015 and knock wood I have gotten out of every satll situation, but the last one was dangerous, rush hour in Austin on I-35 lower deck with a too-narrow shoulder. Help!!

i have th esame issue right now 03 f350 7.3 and did the cps change over and still couldnt start her up.. after she went dead in her last stall in my drive way and thank god to, i had my 2 little girl at the time.... after 2 days trying to find out what went worng she was flat beded from my house into the desiel shop i will let you know when she comes out what the probelm was.. hang in there help is on the way!!

I have an 02 7.3 that is doing the same thing. It stalls at any speed. The first few times it would restart. The last few times I have had to leave it several hours and then it would start. It runs for about 15 min before it stalls. I have replaced the cps twice in the last 2 weeks and still it stalls. Let me know what you find montana09. I desperately need it running. I have 215,000 miles and I bought it new in 01. Thanks joey

Same problem here with 01..Dies randomly.. At low rpm..cps changed.. Hpop changed..ecm changed.. ford can't figure it out because it throws no engine codes..some days it idle then revs motor up then back to idle.. dies mainly when coming to stop at light of slowing for turn.. Restarts no problem

Lewis n lisa...my trouble turned out to be the IPR...injector pressure regulator. I would stall when coming to a stop or cornering most times but sometimes while just driving. It was also showing no codes.....the dealer told me it was the computer and they could fix it for 1200 bucks. I started by replacing the CPS And went on to replacing multiple other parts before reading about the IPR. contrary to popular opinion it can be replaced without removing the fuel bowl. And can be replaced without making special tools.... let me know if you decide to replace it and I will explain the tools needed.... feel free to ask any questions.

Usmctanks61 my truck shut off found out a bent rod

Same problem with my 2001 F250 7.3 Dies while driving, slowing down, turning. Replaced fuel filter, cps and still does the same thing. 168,000. Miles going a little crazy!

Im working on this 2002 ford e450 same symptoms as the majority.. Runs good then shuts off without warning..i will keep everybody posted..

Someone mentioned the alarm system. The horn is part of that. My horn is very sensitive so two days ago I got sick of accidentally hitting it and removed the fuse. The next day it started shutting off at idle and at low rpms. I put the fuse back in and haven't had the problem since.

Bigredbeast, what ended up being the issue with your diesel? Our '02 7.3L is doing the same. CPS sensor already replaced.

Have same problem with 02 f350. however my check engine light comes on but shows no codes. and noticed that the inline fuel pump runs continously

I have 2002 f,,250 7.3 with 250,000 that just had fuel filter changed and will run perfect for a short period of then start lugging then cut off while driving, also check engine light sometimes comes on but does not stay on while blowing slot of smoke while you're idling .Tell me what might be a the problem

I have a 2002 F-250 7.3 the air conditioning will cool perfect then suddenly stop.You can cut it off for a minute cut it back on it will cool good for a minute then quit blowing cool it's not low on freon what's the problem

BIgredbeast did you ever find out what the problem was my excursion is doing the same thing.

2002 7.3 I’ve been having the same problem as usmctanks61. Truck stalls at idle, slow speed or into a turn. Have no problems starting it back up. I’ve changed the icp and cps (grey one). I’ve gone weeks without it stalling and the other day it stalled 3 times. All my fuel filters have been changed. I also have an airdog 150 which has a fuel filter and water separator. I removed the filter inside the fuel tank awhile back and cleaned out my tank. My truck runs great and idles good. It just stalls every once in awhile. No codes or check engine light either. I will replace the ipr next. Hopefully this fixes it but I have my doubts.

I have the same problem. I have a 2002 7.3 that is doing the same thing. It stalls randomly at any speed, mainly at low RPM. It always starts right back up. New CPS, IPR, ICP...going to try the horn fuse...Help!!!

I’m missing something here. How does switching the horn fuse relate to a stalling problem?

My 2001 did the same thing. It would die while idling or randomly while driving. Replacing the cps didn't fix it. It was a bad ipr valve. The only code it ever threw was for the cps. Was told by a mechanic to replace the ipr valve and that fixed it

Thank you Dustin. That’s my next step in trying to fix the stalling problem. Did you replace it yourself? Was it as simple as just removing the ipr valve and replacing with a new one?

My 01 Excursion had all of these problems. I changed everything. Then I called Brian's truck shop to see if he thought it was crossover and if the Trans needed replaced. He said I'd love to sell you a Trans but it's an easy fix. The Trans had been replaced at 50k and they put a filter after the cooler. That was getting plugged and causing the crossover. Something to look for.

My 7.3 runs great but dies after driving for an hr. On trips less than an hour it drives great. It starts shimmering, loses power then dies. I sit for 20 min let it cool off and it cranks right up? Any ideas?

I have a 2003 7.3L Excursion There were times where it wouldn’t start after my wife had driven it for several errands and it was well warmed up. That issue ended up being the HPOP at the end of the day. Recently, i’d be idling at a stop light, give it gas when the light turned green, and then stall in the middle of the intersection, but it would start right back up, but then continue to stall at just about every intersection. I replaced the CPS and also replaced the ICP since the ICP plug had signs of oil leaking out of the ICP but it continued to stall. I finally moved into removing the IPR to see if a good clean on the IPR would do the trick. I quickly saw that the tin nut that hold the IPR all together was gone and was sitting on top of the engine block. I reinstalled the tin nut and now everything runs great. I’m going to put a lock nut on the tin nut. Not sure why those tin nuts are so flimsy when they hold together the IPR assembly.

Has anyone looked into their power steering and brake system? I have noticed that this happens when stopping our slowing down fire a turn.

On air conditioning random problem, compressor clutch failed. Need to replace unit. On random stalling at any speed. If you installed a performance chip, remove it and restore to factory standard.

I do believe it is the Pick-Up Screen in the fuel tank. I purchased a 2001 e350 that was sitting for a few years going up a hill I would step on the peddle and go no where the truck would shut off hell it did it this past weekend. When I dropped the tank last year I saw the pick up screens they was clogged changed them and the truck ran fine my mechanic told me to change the fuel tank or clean the tank I have I did neither will be doing it this week or next.

badboypowerstroke are you still having the problem with the 7.3 stalling?

We are in the same situation. 2002 7.3 excursion occasionally does when turning afterconing to a stop it almost stop and occasionally not starting. Went out yesterday to start ans it just cranked and cranked. Not throwing any codes at all.

I have an 02 7.3 excursion that was intermittently stalling. It was throwing CPS codes and of course replaced cam sensor and the stalls intermittently continued. Found that the cause of the intermittent stalls was a shorted out CPS sensor wire in the main wiring harness. If you have a 7.3 with over 100k miles take a minute and check the 90 degree bend in the main wiring harness where it passes in between the driver's side intercooler pipe and the air intake mounting bracket. After about 100k miles it is not uncommon for the back of the wiring harness to vibrate against the bolts on the air intake bracket causing wear and a possible short. To test this you can start up the motor and while idling, move the wiring harness around with your hand pressing it against the the intake mounting bracket, if the motor suddenly stalls you have found your problem.

I’m at my whits ends with my excursions’ stalling. My next step is to change the CPS, if that doesn’t work I will change the ICP, will let you know

We did the ICP and it still stalled, we just didnthe IPr yesterday. Mechanic drove it for a week and nothing and the next morning won’t start...tow it down starts right up and drives it off the trailer....!!!!

SilasM, I changed the IPR valve 2 days ago and my truck hasn’t stalled yet. I’m not sure if that fixed the stalling problem though. Only time will tell. I use to go weeks and over a month without stalling so we’ll see. I see what you wrote about the cps wire so I will check that. The insulation around the wire going to my IPR was compromised so I put electrical tape around it for the time being. I’m going to drive it for the next month and see if it stalls. Eventually I will purchase a new wire harness for the IPR and possibly other sensors if they appear corroded or compromised. I’ll check back.

I had the same problem with my 1999 f350 . changed out all the obvious stuff. Removed the performance chip on the computer and have not had a problem since.

So it’s been a little over a month and my truck has not stalled. Not 100% sure it was my IPR but for now replacing it seems to of fixed the problem. Someone else who is having a stalling problem might want to check the tin nut that holds the IPR valve together. The tin nut keeps the electromagnetic piece and spacer from sliding back and forth while driving. If the nut is loose or missing it can cause your truck to stall.

I have a 2004 F350 that does the same thing. Help

We changed the IPR and have not had any problems since going on 2 months

I had the same problem with it stalling on my 7.3 right after plugging in a GPS tracker to track my employees. I went out and unplugged it and it has not stalled since If you have a tuner plugged in it may be the problem.

So i have a 2001 f350 7.3 power stroke truck, intermittently dies for no reason when driving and put in neutral and rev engine so I'm guessing the engine really never dies as i don't have to restart it, put it back into drive and goes fine till next time. One time i was able to not put into neutral to see if it would just die and end up at side of road but after a 10-15 seconds lightly pumping pedal it went again ? Its frigging dangerous especially if you cross a highway and a semi coming !! Please help

I have a 2000 f250 7.3 powerstroke. 250,000 Thanks to everyone for their input, this problem is a good one. My f250 stated having problems as described above : it would die while driving and it would die while idling. I replaced the CPS and my fuel filter; same results. I checked my wiring harness and there was an exposed white wire. I re wrapped the wire and harness, and tied it to the bracket so that it would no longer rub on the bolt attaching the hose. same results while driving. It would die if your turned the key off and on it would start again, not every time but always after 2-3 attempts. I have the banks power pack with ottomind chip on the truck, it has been on the truck since 2001. I did not want it to be the chip. I also have a viper alarm on the truck. I checked the wiring of the alarm very carefully. I was about to change the IPR for another $300 from ford. During my driving diagnostics the wait to start light would not come on and the truck would not start at all, luckily I was in my garage. Found a video on this topic and the fix was to tighten the 3 bolts holding the harness in place. I checked the bolts they were not very loose but i gave the top two a half turn and the bottom one a couple of turns. Wait to start light came back on it starts, still dies. Drove it again and the wait to start light would not come back on, finally after 10-15 attempts the truck started, this was my worse test drive. I removed the chip and the vehicle no longer dies...

really frustrated here again ; I am still having the problem described above last post, nobody can figure it out as cant duplicate and no codes etc. They think it could be the computer PCM not positive but i cant find one anywhere due to truck purchased new in California with their low emissions very rare PCM and been told that as long as truck is same year, engine, automatic etc...... you can swap computers with a different ID ? I don't any have chips etc. stock truck . I am wondering if towing travel trailer with too much tongue weight could affect it as it runs fine around town and locally just seems to do it after 2-4 hours towing trailer then does it a lot with or without trailer. Has anyone with a 2001 ford f350 7.3 powerstroke automatic, 4X4 crew cab lariat ever had an issue like this if so what the heck is it ? I am so frustrated that nobody knows what it is for sure, good truck but afraid to take on a road trip now with trailer, its dangerous !!

Me frustrated again ; My truck will die but not die while driving down the road push on gas pedal & nothing, put in neutral while coasting and rev engine which is obviously running , back into drive and it goes but will do it again & again & again ... have replaced gas pedal mechanism , cam sensor relay etc,. runs fine locally 1-2 hours but as above seems to start doing it after running for 3-4 hours ? Anyone ever had this happen to their ford ?

I had this problem with my 2002 F350. After years of trying to diagnose, I pulled the performance chip (hardware not software) and problem resolved. This chip and the aftermarket shop that installed it was recommended by the Austin Ford Dealer salesman that sold me the truck. They even drove it for the installation of the chip, the spray on liner and the tool box, then delivered the truck to me. Live and learn.

Yes, Live and Learn; I got about 18 years out of the ottomind chip before it failed; but this was a sob to diagnose. I have test driven it enough today to be confident it was the chip. Thinking of trying the automind 2 programmer to get the horsepower back, anyone tried the programmers?

Back again. Thought replacing my IPR fixed the problem almost 5 months ago but it didn’t. My truck stalls almost everyday at or near idle. Doesn’t matter how long it’s been running. Starting to think Injector problem, IDM, alternator or tps. I ran some resistance test on my IDM wires but unfortunately getting a readings outside the range doesn’t help me pinpoint a wire or injector problem. The only reason why I’m also thinking alternator is because mine is a reman and I read on another forum that someone else with the same stalling issues discovered it be a faulty alternator not producing enough voltage during lower rpm’s or at idle. Any other suggestions out there? My wires leading from my IDM to my valve covers look good. I’ve replaced my IPR, ICP and CPS (all motor-craft). My IDM connections and PCM/ECM are clean. I also dropped my tank and cleaned it out. My fuel filters both in the fuel bowl and on my frame rail are fairly new and clean. Truck stalls at idle or near idle. It’s starts back up every time. I have no codes!

CAm Position indicator on 7.3

A LOT OF PEOPLE HAVING SAME PROBLEM FORD SHOULD OFFER RECALL TO FIX THESE THINGS BEFORE IT GETS SOMEONE KILLED. THATS JUST IT HOW MANY PEOPLE HAVE TO DIE BEFORE THEY FIX SOMETHING THAT JUST SHUTS OFF AT ANY TIME FOR NO APPARRENT REASON.

Not a cam shaft position sensor (CPS). It could be low oil, like the low end of the dip stick low. Mine hasn’t stalled for nearly 2 months. My driveway where I check my oil has a slight incline. I might not of noticed I’ve been running slightly low on oil. “Make sure your truck is on a flat surface when checking the oil“. Duh! I also checked all injector wires/harnesses. They all were in good shape with clean connectors.

I think I just solved this on my 2000 f350 XLT 7.3. The exhaust pressure sensor get plugged with soot. I was able to scrape it out 5 years ago, but last week it started doing the exact same thing everyone is describing with it wanting to die at a stop. Changed the exhaust back pressure sensor, inspected the tube that runs to the passenger side header and cleaned it out with a piece of weed eater string. So far so good. Hopefully this helps anyone else having an issue.

i had issues like this found the the harrness that plugged into my ipr was bad over the years oil and fuel was leaking down on it and eat the seal out of the back of the pigtail and eat the coating off the wires they would touch some days and cut off the truck and somedays would run great for week or two and do it again if you look at your plug at the back and wipe it clean i use brake cleaner to clean mine and found bare wires inside the back of the pig tails and they would touch and short out cuting the truck off found the same problem at the plug at the turbo pedestal and at the cps sensor i hope this helps someone