Ford 7.3L Power Stroke (1999-2003) :: While Driving F250 Start Chugging / Lose Power And Shut Off
May 10, 2015
I have a 99 F 250 7.3. It runs fine at idle even for a long time. When I drive around the block a couple of times it will start chugging and lose power and shut off. I have been mixing fryer oil with the diesel. I changed the fuel filter, oil change, crank sensor and fuel pump. I added 15 gallons of diesel and diesel treatment. Pulled fuel filter and bowel is full I'm not sure where to look next.
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My truck is an 02 F250 7.3 with 280,000+ miles on it, so I wouldn't be surprised if I might have a number of things going wrong. It runs pretty good, but is still far from 100%, at least up to my standards. So the problem has been going on for the last two or three weeks and got worse today, and there were a few things leading up to it as well. I'll start off with the first thing that happened that I think might be related. It was about 6 months ago, my buddy and I were putting my new headlights in.
It was parked in his garage and we backed it out a little bit to try and adjust them. It was sitting there idling for a minute or two and just shut off or almost stalled out. Tried to restart it and it wouldn't start, tried multiple times to no avail. It acted similar to when I had glow plug troubles when I first got the truck, it would just crank and crank, but never actually kick over and start, along with putting white smoke out the exhaust. Ended up waiting about a half hour and then the truck fired right up with no problems after that, so I didn't think much of it.
Then fast forward to last week to when something similar happened. Started it up after sitting for a few days, started right up, idled for a few seconds and then just shut off. Started it back up ran for a second and died again. Tried a third time with the same result. Fourth time fired right up again and stayed running, let it run for a few minutes and was fine. Also along with this, there was a bad squeaking coming from the front of the truck, like what a belt would sound like. I have recently replaced the belt because it was squeaking and actually got chewed up and almost shredded completely apart.
So not sure why it is squeaking again, but not sure if this could be related or not. Then took it back to my dorm room to get my stuff, and then made it the hour or so drive home from school, without issue. Even went to a few stores before I went home, and shut the truck off and started it back up multiple times, again with no issues. When I drove back earlier this week it was fine until I got there and put it in park. It idled for few seconds and then cut out for a second, but then idled back up and continued to run fine. It has done that a few times as well. So it will do it on a cold start or after already fully warmed up.
Then it got worse today. Again had trouble starting it cold, same as what I explained early. Except second time cranking it wouldn't start at all, then on the third crank it started up and stayed running. But on the drive home is when it got worse. About 5 or 10 minutes into my drive, was just cruising doing at about 45 or 50, and truck just shut off, died/stalled out. It cut out and shut off for a second or two and then started itself back up and continued on like nothing happened. It scared the crap out of me the first time it happened, I was waiting for something like that to happen, but still wasn't quite ready for it.
The truck acted just like it would before you start it, with the key on, dash lights worked and the radio still worked. It did this 4 more times in similar ways, would die and then start back up, at various speeds and at roughly 5 or so minute intervals. I decided to just keep going as long as the truck would start and stay running, hoping to make it home. It did it a fifth time and this time the truck completely shut off and wouldn't restart itself. It was hard to see, as I was watching a few different things at one time, but I think it tried to restart, I noticed the tach bounce between 200-400 RPMS and then die. So I had to pull over and then restart it, fired up and drove fine. That was about half way home, and I made it the rest of the way home without any more problems.
So obviously I'm wondering what would be causing the truck to do this? I've done some reading and have a couple ideas, but not really for sure on anything. I was thinking maybe the CPS, I think it can cause a no start issue. Could ICP or the ICP sensor have something to do with it? I was also thinking maybe something fuel related, such as fuel pressure or a bad fuel pump. Any of those sound to be on the right track?
I have the torque pro app, but not exactly sure how to use it yet, and also just got access to my Uncle's Snap-on scanner, so I ran some tests and pulled some codes. How to more utilize these tools in diagnostics. I did get a few codes, but I'm not exactly sure how they might be related. The codes are pulled are:
P0470 Exhaust Pressure Sensor Circuit Fault. Just cleaned that out as well as the tube about a year ago, but I guess could be clogged again or has gone bad.
P1274 Cylinder 4 (E) High to Low Side Open. Did some reading and figured out that this could be UVCH related. At the same time, about a year ago, did new injector O-rings as well as all new Motorcraft UVCH's, so can't imagine that one is bad. Or that one could be loose, I would have guessed it would have happened more when I first did them, not a year later, but who knows.
Also pulled P1876 T-Case 2wd Solenoid Circuit Fault. Not sure if this is related at all, but also not sure what it means either. I read that it could be ESOF system related, which I do have, but I have manual lockout hubs, so maybe that's why it throws the code.
Also a few things that may or may not be related, but I think worth noting. Ever since I've had the truck the check engine light will pop on and off sometimes. It will do it on a cold start or, when I first start driving and its not fully warmed up yet. It does it most when the engine is still cold, and it almost never comes on once the truck is fully warmed up, but has came on and off more frequently lately. When driving, it will only stay on for a few seconds and more often when I'm lugging the engine or at lower rpms, and will commonly shut off if I let off the throttle.
I don't think it really comes on at higher rpms. I also have a slight oil leak in the valley of the engine, seems to maybe be coming from the front of the motor. Nothing too serious, leaves a small puddle where I park, loses enough to be at the add mark, a little before an oil change. Changed the oil about 1500 miles ago and have been able to notice a slight drop in oil level. Also I have changed the fuel filter in the last 500 miles.
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I have a 2000 f250 7.3 with about 230,000 miles on it. So I filled my truck up to go out of town got on my way drove about 50 miles and the next stop I made the truck shut off and would not start again. I figured CPS went out again! nope changed it still not start. So check the fuel pump seemed fine was getting diesel. Checked oil, was a little low so i topped it off nothing. So i left the truck over night and came back on sunday still nothing. I finally got it started with a shot of quick start i know its not good but i had to get this Truck home. I drove and made it almost home took my foot off the pedal and it stalled again so i pulled it home. Had a guy go over and scan it and it says the oil pressure is at 30 psi when cranking so he says the hpop is probably bad.
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I am a new and very happy 7.3 owner. i have lurking around these forums and decided I didn't want to be a creeper anymore. So onto the fun stuff.
Yesterday my wife was exiting a freeway and the Ex shut off while exiting. once she came to a complete stop she tried turning it on and it would start then immediately shut off. she was able to turn it on and it would run then shut off as she drove across the intersection. once she made it across a good samaritan offered to park it for her. She noticed a little bit of black smoke but she told me that the guy was revving it to keep it running.
Luckily there was family at the mall and she waited for the flat bed to arrive. it sat for about 2 hours and they tried starting it and it would start then die. no more black smoke though. we had it towed to a diesel repair shop and they went to start it today and alas it started right up. they let it idle for 30 minutes and it was good. they test drove it and all good. they ran the codes and got the following:
P1876
B1352
B1483
U1147
One thing I did notice a couple of weeks ago, while driving on the freeway cruising about 65, the Ex surged a little and then ran fine. then another time it surged a little while idling. Some more info on the rig. it has a banks six gun tuner and has a cold air intake and exhaust. And it has a Banks Big Head wastegate. I bought the rig 2 months ago and changed all the filters and fluids.
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I picked up a 2003 6.0 awhile back went ahead and did studs,gaskets, delete. Was driving it and seemed to lose power, started coughing and carrying on blowing bluish white smoke then shut off. Ended up hydrlocking #5, Oring on injector was tore when took out. Put all back together, ran horrible, did a balance test with AE, showed #3 injector, replaced, ran horrible, did AE dropped #1 injector. So in process of replacing the rest of the injectors. Just wondering why it is or was dropping them 1 at a time. Ficm was showing 47.6 to 48.6 volts, could that be it?????
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Truck is an early 1999 F250 Super Duty ext cab long bed, ZF6 swap. 164k miles on the dash, has the newer injectors and hpop from what I was told. It does have a 6 position switch, I typically keep it at the daily 70 horse gain tune. I do not beat the truck often. I don't tow often either.
Truck always took a few seconds longer to start than other 7.3s I have seen. So two days in row, after 8 hours of sitting in the sun, my truck did not wanna start right. Took about 5 minutes of cranking both days to get it to start. Then today on my way to work in the morning I started truck let it idle, everything seemed fine, Started driving and the engine just didn't sound right, but I figured maybe it was still a little cold. Continued driving, and it stalled out ( zf6) , I tried pop starting it but that only got me another block or two, after 10 minutes of cranking I got it to start up made it a half mile it shut off, same thing started and got it home. It cranked longer than normal but started at home after it I turned it off.
At work now so I have yet to check anything. Replacing CPS after work No smoke out of tailpipe, It is getting fuel, I checked the filter. I am no master mechanic, I do basic maintenance like oil changes, brakes, filters and censors my self. Anything more intensive I have not done. If it is not the CPS what else could it be, and how would I go about checking?
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I have a 03 f250 6.0 had it for 2 years never had a problem. Last week I went out and started it to warm it's up as it is cold out here and it started fine I then noticed some thing hanging down under the dash so I started tucking it up under there and it arced and all gauges shut off and the truck shut off. So I took the panel down and it was the biometric pressure sensor that was hanging and the previous owner had a remote start on there that I never knew about and 2 wires on the sensor were stripped and not taped as well as some others. I checked all fuses and relays all working good tested fuse box and everything good there, replaced bio sensor and still nothing turn the key and try to start it and it does nothing injectors, don't precycle fuel pump doesn't run and starter doesn't kick in. I jumped starter off the wire on fender and it turns over but still doesn't start. Also I think it's the ecu but don't want to buy another one if I'm not sure if that's the problem.
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Problem started 2 days ago, driving around and my truck would stumble and lose power. Give it gas, won't rev up but it cleared and ran fine for a mile or so then it comes back (off and on all the way home). Check engine light didn't come on the first few times, came on a couple times on the way home (maybe 4 mile trip) but goes off when the truck runs fine. Thinking it was maybe the fuel pump (got 140K on the stocker). Talked to a few friends, some thought it was algae build up in the tank that was clogging the filter on the pump, underhood filter changed a couple hundred miles ago. Looked fine with slight brown build up at bottom of bowl when I replaced it.
Ran it around yesterday with a friend of mine and his scan tool hooked up, acted up once, check engine came on for a few seconds and shutoff. No code and for some reason we couldn't get it to live data while driving. I dumped in an algae eater yesterday and left the truck overnight since I had to work. Got home this morning to run her around the block to circulate the eater. Truck started and idled fine, went to pull out and she won't rev up, pumped the gas and NOTHING! Check engine light is on now but don't have a scan tool handy to read it. I heard the truck will store the code?
What this problem might be? What's a good scan tool for our trucks that can live data as well? CPS is good and already did the UVCH mod.
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I've got an E99 powerstroke. Recently it's been getting hard to steer, if not impossible. When I'm parked i can't turn the wheel and it gets better if i Rev the engine up, driving is usually ok and going around corners. It's just low speed, low rpm that it won't.
Also every once in a while when braking it feels like i lose all power brakes. The pedal goes to the floor and the brakes let go, then i can feel the pedal pump back up and i get a good feeling brake pedal again that actually stops well. All this happens within about a seconds time. But the steering is by far the worst.
I just did the power steering flush with atf and it didn't work. I'm thinking i need a new power steering pump, but want to ask here first to make sure. The truck has 290,000 on it, and it never has been replaced to my knowledge. I bought the truck with 147,000 however so it may have been done before that.
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While driving up hill at 60mph the truck lost power. Rpm jumped up as to change gears as it hit 55mph. Still losing power until it shut off. I tried to restart and just got a click from the solenoid. No engine codes whatsoever. Battery had 12.1 volts but when turning the key to start in getting 8 volts. Had it towed home. Today I swapped batteries with my other truck and same click noise from solenoid. All lights, radio, ect still work. Where should I start? Alternator, fuses...?? 2008 f250 5.4 ...
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Shortly after i bought the truck and started driving it home, it shut down on me while coming up a mountain on the interstate. I had probably drove it about 10-15 miles and about 20-30 minutes of running after being dead cold. The temp gauge was about in the middle and it would not start up again until about an hour and a half later, which I was able to drive it home another 20 miles away.
There are no codes, which a mechanic told me it is probably an intermittent problem then. He then told me it would either be the cps, ipr or fuel pump. I have changed the cps and since then have not been able to replicate the problem but I have also not been able to get the engine up to temp because of the recent weather being so cold. I want to test the truck and see if I can get it to stall again but what this could be or what I can do to test the truck?
The truck is a 2003 f250 7.3 4x4 automatic, short bed, crew cab, with 320k miles.
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Have no OD, when you press the OD button nothing happens and then the OD light flashes until she's shut down. On start up no flashing until OD button pressed. All other gears shift lovely. Haven't checked codes yet.
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I have a 2001 F350, 7.3. My service engine light came on and immediately the truck started to run rough and lose some power. I've checked the under the cover connections and they were both connected, I replaced the cam position sensor and I still have the same problem. The worse part of the hold thing is that there are no codes stored so I'm flying bind. Where to go next.
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Cooler weather has arrived and my 2000 f250 won't start. Wait to start light is coming on, no power passing through the two relays on top of the engine. Are both of these for glowplugs? My 97 only had one. How do I diagnose relays on this truck? If you cross out the two relays truck fires right off so I know the glowplugs themselves are good.
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My truck occasionally gets a hot no start issue and it's been happening more frequently. Mostly it happens if I drive it up to operating temp turn it off for a short time, then try to start up again. Usually, if I wait 15min to an hour it will start up. It has died on me while driving too, then I have to wait and periodically try it. I've noticed in this situation that if my glow plugs turn on for only a short time, it won't start. But once the motor has cooled enough that the glow plugs stay on for the longer duration, then it will start right up.
I've replaced the CPS, rebuilt the IPR, did the ICP unplug test, rebuilt the injectors, replaced the fuel filter.
HPOP oil level is good, changed the oil maybe 500mi ago. When it's a no start, the low oil pressure gauge does start to read after some cranking, also the tach does read. It throws no DTCs. My reader isn't able to monitor live sensor data.
There is some oil in the valley, but I can't find the source. I think it's probably the turbo pedestal. What else should I check?
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I have a 2000 f350. Lost power whole driving and won't start back up. I have checked all my fuses and relays several times. Have no power to the fuel pump. Tried running a hot wire straight to the pump and still nothing.checked my emergency cur off switch and there is no power there. Also my WTS light isn't coming on now. Tried checking the heater bowl and no power there.
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I've developed a problem, usually when starting, that the truck will crank over, start and idle for a few seconds and then shut off. The few seconds it idles it doesn't get any throttle input. I'll crank it back over taking a little more than usual to get it started. When it does start it seems slightly sluggish but that quickly, like almost immediately goes away and the throttle is working again.
Oh, 2001, 7.3 stock w/200k
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Been chasing my tail and can't figure out an electrical issue. My issue is that I'll drive for about 20-30 min and the truck will shut off while driving. I'll pull off the road, let it sit for 10-20 min (cool down) and It will fire back up and go for another 15 min or so. Sometimes it will glitch/wig out when i try to start or not start....
I've replaced the following and monitored everything on a scanner.
-cam sensor
-crank sensor
-2 new batteries
-flashed the ecu
05' F250 6.0 King Ranch 4X4
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I have recently picked up an older F350 2WD 7.3 DRW Lariat. the price was right higher miles but hey it is a 7.3, overall in very good shape.
So the issue at hand is the truck runs great most of the time and puttering around at city speeds you would never know there is any issue;
Get the truck out on the highway set the cruse at 70 to 72 and if you hit a rise in the road or other reason to slightly accelerate the truck chugs and bucks. For lack of a better description it goes chug chug chug, if you accelerate harder to downshift it goes away or if you back off the throttle it goes away. This happens with cruse on or off, a steady foot on the pedal will cause this as well.
I have also noticed that when you let off the throttle the sound the truck makes de-fueling is just very different and "off" sounding . Not sure how to describe it but it sounds funky ... clearly not right when compared to other 7.3 or my 6.0 truck.
What I have done, :
1. Had the truck scanned with an AE and a snap-on scanner both show no codes ran injector tests no contribution errors, not even in # 8.
2. Changed fuel filter
3. Changed Oil and Filters ( tried both full synthetic Rotella and Dino oil looking for a difference )
4. Cleaned out the fuel filter housing just in case.
5. Confirmed injector O-Rings are not leaking
This feels like a fuel issue, my next thought was start looking at fuel pressure under load at speed to see if there was a drop when this is happening ?
Is there a way to test fuel pumps in this truck ? Maybe a clogged pick-up screen ? Where do I start looking next ? I have reasonable mechanical skills but don't know this motor very well, this doesn't seem like a CPS issue..
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Last November I forgot to plug my truck in and it got down to 0, my girlfriend tried unsuccessfully to jump start it. When I got home I jumped it and got it running. I took it down to a heated shop to troubleshoot the glow plug circuit. I discovered it was not getting 12v to the glow plug relay. Also I started it and tried to back it up in the shop, when put in reverse it killed the engine, not lugged it down it was like you shut the switch off.
Also I discovered if you turn the lights on it kills the engine immediately. It will not crank with the lights on either. So far I have replaced the computer,ignition switch,batteries, and cam positioning sensor. Now comes the weird part!! I decided to get it running and pull the bulbs out of the back up lights I pulled the drivers bulb first then the passengers side bulb. When I pulled the passengers side bulb it killed the engine.
It is not my daily driver so it still sits in my shop. I have a hunch it's a ground issue but I've checked and cleaned up all the grounds I can find and it still has the problem.
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2003 crank no start, 196k bone stock truck egr still in truck and stock head bolts. Replaced the icp sensor and ipr sensor, both from ford. What happened is I got fuel then about 15 minutes afterwards my truck acted like it was going up a hill and was just losing power and shut itself off. ficm tested 48.5 volts all 8 injectors tested good and there is oil pressure. Had an egr fault code but I'm at a loss.....
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