Ford 7.3L Power Stroke (1999-2003) :: 2002 F250 - Lost Power And Suddenly No Throttle
Oct 22, 2011
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
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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.
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My 2002 f250 starts but has no throttle, I did replace the throttle body, still no luck, i did find a wire on the shiffter that had a bad spot , fixxed it still no throttle, code reader says it passes with no codes, I disconnected both batteries and waited 15 to 20 min, reconnected them, started the truck and let it idle for 20 min so what do i need to do now. I just cant figure it out....
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Last year I did some major work on my 02. Painted it, new injectors, 38R, and once it was back together, the transmission went south in a month. Got a Ford reman HD4R100. Shortly after the install, when in reverse, the torque convertor would lock up when you stepped on the throttle. As soon as you let off the throttle, it would disengage. Thinking it was a tranny issue, got another one from Ford. This one has been in the truck for about 9 months. And it seemed fine until about a month ago. It started doing the torque convertor lockup thing in reverse like the last one, but not as often.
Then last weekend it did it every time I put it in reverse. Then yesterday, while pulling away from a traffic light, there was a loud bang, and lost power in the transmission. Once stopped, I found out it has manual 1st and 2nd, but nothing else. No drive, overdrive, or reverse. I personally believe something electrical led to these issues, and ultimately, the transmission failure. I know the truck is not stock, but I do not run it hard very much. When it went bang yesterday, I was not being hard on it. Where to look at what is causing this?
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So after hitting a pothole, it would seem like half the engine lost power, after some searching around, i found that i would most likely be the harness inside the valve cover that has lost connection.
Its the right side, so i would need to take of the turbo pipe, and probably something else to get to it.
Since i'm doing this job, what to check out along the way? I want my 7.3 to be as reliable as possible.
I will probably ask some questions along the way, it can be a challenge sometimes to own a car that not many mechanics are familiar with, but as i have read online, this should be a very straight forward fix.
Can the harness be upgraded so it doesn't happen again? Its an 02
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'99 F-250 7.3 PS 2WD Automatic 246,000 miles
Jumped in my truck a bit ago and it wouldn't start, although it is turning over. The "Wait to Start" light is not coming on and the Overdrive button on the shifter is lit up OFF and won't change with me pressing the button. I've checked all the fuses under hood and inside cab with multimeter and everything checks out ok.
Also, when it was raining last week I found that when I turned on my windshield wipers the truck would die. My solution to get home was to just flip it back & forth real quick every so often so I could see out the windshield.
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I've got a99 F2 50 super duty with a 2000 2001 motor. I got the truck in the beginning of last winter so this is my first summer with it.
When I first got the truck there are injector issues with the truck. Since I fix the issues there has been little problems out of the truck however it's still suffered misfires when Cold but once up to operating temperature it was fine. Yesterday I had to go with a friend before leaving for the trip I checked the oil it was full and appeared normal the trip was about 150 miles. I came home park the truck after everything was done. This morning I came out started the truck everything acted as it should... truck fired right up everything was great went and dropped off my trailer at the yard come back got fuel when I come back out from paying for the fuel the truck took about 30 seconds to fire up I checked my gauges and torque pro and everything seemed normal. So on my way I went.
I drove about 10 miles on the highway to the place I had to be when I got done doing my business I came back out to start my truck and it did the same thing this time however it took longer to start I managed to drive about a mile down the road when I noticed my old pressure gauge flickering and my Oil pressure light on I immediately shut it down and coasted into O'Reilly's parking lot I check the oil in the truck and it was empty according to the stick I added two whole gallon.... With it filled back up down the road I went. So currently the truck is still suffering from a long hard starts it takes 30 to 45 seconds before it all actually fire up once it fires up everything appears to be fine however the truck is slowly smoking a bluish black color... It's never done this before however I've never had this truck in the middle of summer when it's real hot out I don't think this is normal.
The truck doesn't appear to be down on any power actually it, acts as if it might've picked up of some power it is felt real peppy today compared to other days. Also I might note that about a week or two ago I started smelling diesel like either really rich diesel or raw diesel wasn't too bad but I just got whiffs of it for now and then. Now there is a burn oil smell present from the exhaust. Like I was saying earlier when I first got the truck I had to service the injector O-rings... I was told that the miss firing when cold was caused by the Poppitz sticking. The misfire hasn't been present since it got a little warm outside like I was saying it was only when the vehicle is cold.... Just thought I would mention the injector issue not sure if it's relative or not..... My thoughts are it's back to an injector issue or O-rings or possibly did I wipe the motor when it ran out of oil. I am not aware of where the oil went as there is been no leaks or drips.
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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?).
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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....
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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.
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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.
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This started about 6 weeks ago. While sitting at a stop light the motor cut out. After some research I replaced the cps. Truck ran fine for about 3 weeks, then shut down again while pulling into the driveway of a store. Replaced the cps again (this time with a ford one). Ran fine for another 3 weeks, then shut down again on the freeway. No CEL on any occasion.
It's just like someone turned the key off. No rough idling at all. No smoke during starting or driving. When it shuts down, it will not start again for 20-30 minutes, no matter how many time you crank it. It will just turn over, no sputter. When it fires up again there is no air in the lines either, it runs like nothing happened.
I'm now thinking it might be a ipr issue...is there a way I can check myself or does it need to go to the mechanic? Or is it something completely different? This is my mother in laws daily driver, 178k. She does not drive on the freeway, 80% of the mileage is city driving. What could be going on?
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I have a 2002 ford excursion. I know they have cali emissions. It runs fine then suddenly dies while driving. We've replaced the glow plug switch and relay. Neither one fixed the problem. we washed the motor a while back and it fried the programmer wiring.
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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?
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I am fairly new to powerstrokes, but have a general understanding how the 7.3l operates, and how the fuel system works.
The problem i am experiencing is a crank, no start. The truck has been great for the year and a half that i have owned it. Always cranked great and never any starting or running issues. One day upon cranking, i started the motor; it started normal running good for a minute until the motor suddenly started shuttering and then the motor shut off, happened rather quickly. The truck started up immediately after that and died....repeating the shutter until dead. Now the truck will not start.
Specs on truck:
2002 7.3l
230,000 miles
Manual transmission
Here's what i have replaced so far:
New parts include:
IPR (motorcraft)
ICP (motorcraft)
EBPV (napa)
CPS (napa)
IDM (reman)
Here are some of the diagnostic values i have collected during cranking: (FYI: i am a little confused on what the values mean and what they should be in order for the motor to start):
ICP: 2218 psi
ICP duty cycle: 41%
EBP: 265 kpa
battery voltage: 12.0
Rpm: 355
Things i have checked so far:
Oil is new and level is good.
WTS light cycles as normal.
Fuel bowl is full and over flows with cap off while cranking.
Fuel tank is above half.
Glow plug relay is good.
I was throwing a code for the PCM, but i removed the bully dog tuner and the code has since cleared.
HPOP oil is an inch below full.
I made a gauge set and dead headed HPOP yielding 1500psi.
Upon cranking i am seeing some smoke, i guess, but its kind of hard to tell from the drivers seat.
This is where i am at so far. I don't have a way to buzz test the injectors or tell if they are leaking past the orings. I have the valve covers removed, but i have been putting off pulling the injectors to replace the orings.
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My pickup has 316,000 miles on it. It's a 2000 ford f250 7.3 powerstroke. I have always bragged how my truck can pull anything because it has alot of power. Yesterday when pulling a 28' travel trailer up an incline I noticed I didn't have much power and it steadily got worse. Now I'm at a crawl when I hear a noise sounding like it lost air compression for a few minutes then the noise stopped. I stopped and looked to make sure everything under the hood was still attached and everything seemed fine.
I got back in and continued very slowly a few more miles home. Gauge were all good, never got hot. I put a scanner on it and it threw two codes. P1247 and P1248. I haven't noticed any unusual smoke. This is my second ford I've owned and know that when weather gets cold you may have to plug it in. But this truck it doesn't matter if it's 100 outside it will not start without plugging in for at least 1 hour. I've replaced all glow plugs hasn't worked. So I am assuming this break down now has something to do with it. I really am starting to not like fords!
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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?
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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.
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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.
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So on my way home today I lost all power, the engine shut of and i coasted to side of the road. Went to try and start, nothing. When key is in the crank position the gauges were jumping all over the place, also accompanied by a lot of clicking from behind the dash. Nothing happened when tried to crank. No power to windows or even emergency flashers.
So i get it towed home, and of course it turns over. But this only lasts about ten seconds, then dies. I could do that a few times and then back to no power at all. Even at times with the keys out of ignition it will still click and make a lot of noise.
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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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