Ford 7.3L Power Stroke (1999-2003) :: 2002 F250 - Lost Power And Suddenly No Throttle
Comming back from hunting today my truck suddenly lost power and stepping on the accelearator had no effect at all. We were on the highway thru the mountains but on a fairly level stretch for a few miles. Managed to pull the truck and toy hauler over and the engine was running fine but stepping on the accelerator had no effect. The check engine light came on every time I stepped on the throttle and went out when I released it. It started fine but no throttle response. Switched around a bunch of relays and checked the fuses and still nothing.
Not liking my parking spot i tried to see if it would move down the road at an idle but it would not. Then I thought to try it in 4 wheel low and as the shoulders were soft it wouldn't move forward so tried reverse and went back a foot, forward again and moved a foot and a half. did this several times and all of a sudden the throttle responded, took it out of 4 wheel and it ran fine all the way home. What would have caused this? I was ready to call a tow truck which would have been several hundred dollar bills for where we were and with the trailer
Ford 7.3L Power Stroke (1999-2003) :: 2002 F250 Starts Then Dies - Shut Down While Driving
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.
Ford 7.3L Power Stroke (1999-2003) :: 2002 F250 Starts And Runs With Rough Idle For About 10 Seconds When Cold
I have an issue with my 7.3.... the truck will not start if it sits overnight without being plugged in, even in 65 degree weather. It starts and runs with a rough idle for about 10 seconds after its been plugged in for an hour, after the rough idle is gone it runs great .. it will Stat back up as long as the truck is warm (70+).... I've replaced the batteries, glow plugs, starter (it was going bad) and fuel filter. .. also replaced the gpr today. ....
View 14 RepliesFord 7.3L Power Stroke (1999-2003) :: Truck Starts And Runs But Throttle Doesn't Work
So I installed my chip today. It's got anti-theft, high idle, stock, 50, 75, 100 tunes.
With the chip installed the truck starts. In all tunes except "High Idle" it idles at about 1000... normally it would be like 500-600. High idle position works (1100-1200 RPM). Anti-theft position works - it kills the truck. The throttle does nothing when pressed no matter which position it is in. Stock, 50, 75 or 100.
I removed the chip and the truck runs fine. Did these guys send me one for an automatic? Or do I have the wrong computer in my truck? My computer code is DAC3 and the truck is a 2000 with a manual transmission.
Ford 7.3L Power Stroke (1999-2003) :: 2000 F250 Starts When Key Is Turned To Run
I have a 2000 F-250 7.3 L Diesel w/200,000+ miles on it.
I use the truck for snowplowing and last snowfall one of my employees broke the overdrive switch on the PRNDL shift lever. I just replaced it and as I went to start the truck I had just turned the key to run in order to let the glow plugs warm up and the truck attempted to start itself.
As it was running I could hear the starter continue to run although I never fully turned the key. I have since then replaced the ignition switch and the key lock cylinder. That didn't fix the issue, I then pulled the fuse box that is inside the cab of the truck to inspect the GEM module. Other than lots of dust there was no corrosion or any see-able issues with the module. I cleaned all connections thoroughly and even applied a little dielectric grease to the connections.
Still has the same issue, I ran a voltmeter to the trigger wire on the starter relay and it reads 10V when the key is turned to run. I believe it should not read any voltage until the key is turned to start. If I have the trigger wire on the starter relay disconnected the truck won't start, obviously. I don't believe the starter relay is bad because it does start only when the key is in the run position and it has never attempted to start without the key.
Ford 6.0L Power Stroke Diesel :: F250 - Cold Starts Fine / Stalls Immediately After / No Throttle Low RPM
I'm having an issue with the truck not staying idle after cold start up. The truck will turn over and start right away (not even 2 second crank) but immediately dies. The throttle will not work at low RPM. When I start the truck, it will instantly rev high, the revs will drop low, it will try to compensate and rev high again, then it will immediately die.
If the RPMs are under under 2.5k, the truck will immediately stall and die. When I attempt to use the throttle under that RPM, it will not work. No matter how much I depress it, the engine will instantly cut and stall out. It will not attempt to deliver fuel. The only way I can get the truck started is if I rev the engine high and hold it. I need to hold the truck at 2.5k+ RPM for atleast 30 seconds. It generally takes me about 5 tries to finally get it running (mainly due to the throttle immediately cutting out and I have to 'catch' and hold it.) After that, there is no sign or issue. The truck will start immediately back up after it's been running for a couple minutes.
CEL: MAP sensor (0069?) -- Sensor is spotless. Harness looks fine. I replaced the injectors, both batteries, and the alternator this summer. It doesn't sound to be any these either as the truck sounds extremely healthy and immediately turns over.
Ford 7.3L Power Stroke (1999-2003) :: 2002 - Vibrates When Throttle - Rear Differential Rebuild
My truck (02 7.3L cc) started making a grilled ding type of vibration when I would let if the throttle. I felt the axle going into the rear differential was a bit loose, so I took the cover plate off. The pictures below show where the pinion I think is hitting, sort of like the bearing is allowing front to Rear differential scaring from movement. Rear movement.
How difficult is a rebuild, and is there anything I should be careful of?
Ford 7.3L Power Stroke (1999-2003) :: 2002 F350 - Howl Behind Trans / Noise Starts Around 30 MPH
I just changed u-joints and the carrier bearing on the rear driveshaft. I now have a "howl" somewhere back there. The noise starts around 30mph and goes away around 40mph. There no vibration associated with it. The sound goes away after driving for 15-20 minutes.
I double check all my marks on the driveshaft to make sure I put it in the way it came out. I put it up on jack stands and ran it up to speed but couldn't replicate the sound that way.
The truck is a 2002 F350 7.3ltr DRW.....
Ford 7.3L Power Stroke (1999-2003) :: 2002 F450 - Engine Stops For About 1 Second And Starts Back Up By Itself While Driving
The truck is a 2002 F450 7.3 diesel with about 120k Miles.
While driving from 45-70Mph the truck engine stops for about 1 second and starts back up by itself. I thought the problem was the cps so I replaced it with a ford CPS. Today the problem still persists. The truck engine turns off and comes back on, the tach drops to 0 rpm and so does the speed.
The Check Engine Light comes on and so does the water in fuel light and so does the Check Gage light. After I turn off the truck and start it back up the truck does not show the lights.
I believe I found the issue, but can't look into it today. While I was moving some of the wires on the truck I found out that if I move the red/black bunch just a little bit the truck shuts off and comes back on when i let it go.
Ford 7.3L Power Stroke (1999-2003) :: 2002 F250 - No Power To PCM Fuse
I just finished a cab swap and I'm having a little trouble. Here's a link to what I've done : [URL] ....
KOEO the WTS light, battery light, SES light all stay on and no power to fuel pump. No communication with PCM (using AE). All fuses are good, but no power to PCM fuse (#22). When I apply 12v to #22, the truck will start and idle - but poorly because I still don't think fuel pump comes on. The idiot lights all stay the same.
I did get to pull codes while it was running and got stuff like IAT circuit high (its not plugged in), fuel pump relay short to batttery, and a few other short to battery things (park assist stuff IIRC). I thought that might have something to do with the redneck idea to boost the fuse with an external power source?
Just thinking while typing, I don't have 3rd brake light hooked up yet (just thought of that, I'll hook it up first) and bed/bumper are not installed, so no tail lights or park assist stuff is hooked up. I'm also not using overhead computer, so it's not plugged in.
My next step is to go back through all of the connectors and make sure something isn't 1/2 way plugged in or possibly plugged into the wrong place(s).
Looking thru the wiring diagrams is not a strong subject for me, but I was trying to figure out how power gets to the fuse and how PCM relay works (does it complete circuit to ground to energize the coil?).
Ford 7.3L Power Stroke (1999-2003) :: 2002 F250 - No Power Getting To Fuel Pump
There was no power getting to the fuel pump on my 2002 Ford F250 73 diesel traced it back to the inertia switch no power in or out but I'm getting power at the fuel pump relay put the code scanner to the PCM and no communication....
View 9 RepliesFord 7.3L Power Stroke (1999-2003) :: 2002 F250 - No Accessories Come On
My 02 F250 periodically has no acccesories like electric windows, radio, and AC do not work for a minute or so. It has been doing this for awhile and seems to be getting more frequent and I am concerned that it might go out on a trip. It runs OK when this is going on and usually happens on the first start on the day. I was thinking maybe the ignition switch?
View 7 RepliesFord 7.3L Power Stroke (1999-2003) :: 2002 F250 Cranks But Won't Run?
2002 Ford F250 super duty 7.3L Diesel Automatic I crank but wont start and run.
Background:
I live in NY, last winter (2013-2014) fuel pump stopped working, I discovered this website, changed my fuel pump although mine worked fine after I did it, Power was not going to my fuel pump, took apart truck to follow wires to find the problem, wires come from the fuel pump into the CPU and Fuse box, relay is built in fuse box, changed fuse box, truck started, from early spring to summer ran without problems, in summer friend ran truck dry without filling up luckily he threw it in neutral and shut off engine rolled it to a stop, Filled up truck after a few tries it starts up. A week later the fuel filter o-ring rips and spews diesel all over engine, changed filter ran for a week and o-ring poped out again, changed to a different o-ring and ran for a month without problems. Then poped again, and again, each time approximately a week later.
Latest winter (2014-2015)
I start my truck to warm up go inside and forgot all about it, about 1.5 hours later I remember my truck is started, go outside to find it shut off with diesel all over the pavement, the o-ring blew again. I changed it, cranked the engine and it started and ran for 10 seconds before stalling. I turned the key a few times to try and have my fuel pump run, and it would crank but not start. Then it started to crank really slow,(batteries were now already on charge) it was below freezing for a good whole week now, found my oil heating plug and waited a day, cranked it the next day, cranked faster but did not start, waited another day and when I tried to start it the starter would not turn.
Today:
So today, winter is almost over(if you lived here you would understand) I find out I blew my starter and changed it, I replaced the o-ring with [ 90025K557Double-Seal X-Profile O-Ring, Oil-Resistant Buna-N, Dash Number 347 ] from Mcmaster.com as suggested on this site. I cranked the engine, It started ran for 30 seconds and stalled. I tried turning the key a couple of times to get fuel going(fuel pump seems to be working), but crank and wont run. My father suggested starter fluid, got couple cans, I was able to start the truck with starter fluid and keep it running until the can ran out.
It wont start and run on its own like it did the first time I tried.
Ford 7.3L Power Stroke (1999-2003) :: 2002 F250 - CEL Came On For 30 Seconds And Went Off
I have a 2002 F250 7.3 with 130,000 miles. The truck was bought new by my father and is completely stock and never run hard. I was driving on the interstate at 70 mph and the cel came on for 30 seconds and went off. Not long after it went off the truck shut off and has not started back. That was around 12-20-16. I have put a new cps, icp, and ipr on it with no luck. All ford parts. I drained the fuel water separator to check the fuel pump and it filled back up. The truck is turning over good but has no white smoke witch leads me to think maybe the IDM. I'm a novice to all of this and until this happened new nothing about any of these parts but I'm learning. I do have the torque app if I should check some things.
View 14 RepliesFord 7.3L Power Stroke (1999-2003) :: 2002 F250 - No Power To Reverse Light Sockets
I have a 2002 f250 CC 4wd 7.3 and I have no power to my reverse light sockets. I am stumped, all my fuses are good, I don't think there's a relay so i haven't checked that. My neutral safety switch is good, I'm getting power to both the blue/pink and black/pink wire. What it could be, at first it was constantly blowing fuse 27 every time I put it in reverse but then it stopped blowing it obviously because they won't come on.
View 8 RepliesFord 7.3L Power Stroke (1999-2003) :: 2002 F250 Idling / Running Rough And No Power
2002 F250 7.3L suddenly idling and running very rough, and doesn't have any power. Truck has been running perfect, it's my daily driver, and just put a couple hundred miles on it yesterday with no problems. I had been having some transmission issues when I tow heavy so I bought a new transmission yesterday. This morning I pulled the truck into my garage to change the transmission. Again truck ran fine, no signs of any issues before the trans swap. I changed out the transmission, which included unhooking the trans wiring harness from all the various sensors, and unbolting the starter.
I didn't mess with anything in the engine bay except for unhooking the batteries. I had also repaired the overdrive button wires, as they had been pinched in the steering column and the button wasn't working. When I got everything hooked back up I cranked it up to get the trans fluid flowing through the transmission, it started right up and idled good. I had it running for a few minutes and it was beginning to make a little more noise than usual. When I started to back out of the garage it was getting pretty rough, almost like it was running out of diesel. I put it in neutral and gave it some throttle and noticed I was getting white smoke out of the exhaust and could smell diesel pretty strong.
I checked my injector resistance at the valve covers and got around 4 ohms +/- on all of the injectors. I rechecked all of the clips and harness that I had messed with. I took a look at the ICP sensor and it has oil in the connector which I know can cause a rough running condition in some cases. It looks like it has had oil on it for a while. I unhooked the batteries again for about 20 minutes to try and reset anything that may have messed up. I checked a bunch of connections under the hood to see if anything was unhooked or loose.
I also cleaned up the connector on the ICP sensor. I started the truck back up and it idled perfect so I pulled it back out of the garage and headed down the driveway. It almost immediately started running rough again and barely had the power to go up a small hill. I pulled back in and tried unplugging the ICP while it was running, which made a slight difference in the idle but still very rough. I plugged it back in and the idle progressively got worse until it was chugging really bad. I shut it off after that and haven't messed with it again.
What might have happened? Could it be a bad sensor or transmission position sensor in the new trans? Is it just coincidence that this happened with a transmission swap? I am going to get a new ICP, but if there is anything else I can try/check before I can pick up the ICP on Monday let me know.
Ford 7.3L Power Stroke (1999-2003) :: 2002 F250 - Truck Lost Power Then Died - No Codes
I have a 2002 F250 Super Duty. Was driving it and it started to lose power and shut off. Then wouldn't start like out of fuel. No engine light no codes. Truck has 155k on it. So just because I replaced fuel pump. Truck runs but not right it's ruff no power kinda back fires in exhaust. I check wires and plugs under valve covers all seems ok. I ran truck and pulled each injector loose and engine would stumble. As in they are working. I replaced cps. Just because still the same. Then the truck started running right. But the truck runs but has knock but knock goes away and truck has full power. Yes oil is full and I change it regularly. The problem is off and on like electrical.
View 7 RepliesFord 7.3L Power Stroke (1999-2003) :: 2002 F250 - Surging Between 35 - 50 MPH And When Coasting At About 60
Ran torque for the first time on my f250, I used it for diagnostics to see if i can find out whats causing the surging. At a red light sitting idle it shows my icp at 705psi seems high to me? I'm running a dp tuner, it was set at stock for this run. It starts surging between 35-50mph and when coasting at about 60mph, surges during light throttle or maintaining throttle at low speeds. If i go about 70mph and up it runs like a champ. Ive changed the tps(entire pedal assembly), uvcg connectors, icp and pigtail. No CEL comes on, torque shows ipr is good, working on hpop pid. I just bought the truck last month and haven't been able to enjoy it much since it started doing this. ...
View 14 RepliesFord 7.3L Power Stroke (1999-2003) :: 2002 F250 Will Run Fine For About 5 - 10 Minutes Then Die Out
My f250 is having a stalling issue. It will run fine for about 5-10 minutes and then die out, already replaced CPS, fuel filter, and fuel pump. What else could be the problem?
View 4 Replies