Ford 7.3L Power Stroke (1999-2003) :: Lost Fuel Pressure Going Down The Highway And Truck Died
Dec 1, 2015
Last night when i left work I noticed my fuel pressure was running about 77 psi, it normally runs about 68psi. today I took my daughter to practice and it was around 83psi, on the way home it was up to 95psi, so I parked it and took another truck to work.
About a week and a half ago I lost fuel pressure going down the highway and the truck died, finally decided my pick-up foot must have come off and had my sister in law bring me some diesel and it has drove fine ever since. (it was right at a quarter tank).
I have the FRX from riffraff and am thinking some pieces of that foot have got into the fuel bowl and plugging up the return. Things to check? Could it be a problem with the fuel gauge or wiring, and how to test them. It is an autometer gauge from riffraff.
It will probably be a few weeks before I can do much more than clean out the fuel bowl. I don't have anywhere inside to work on it and it's been rain/sleet/freezing rain/snow for the last 10 days. I have most of the stuff to do the hutch mod and its next on the list but was hoping to put it off till spring.
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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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Jumped in the 1999 cc dually 7.3 6 spd superduty.
Just rebuilt the rear locker ( FYI if you use new clutches Do NOT add clutches, it is TOO tight now) and rest of rear end.
Full of fuel, drove it half the day only minor issues. Cruise, Horn, 4x4, suddenly would not work, but it was running and driving like it always has.
Around lunch while at 55 mph it shuttered hard like it had stalled for a second. I stopped and checked the oil. It was just above the add but I topped it off and went one. The further I went the more it happened.
So I decided to head back to shop and switch it with the car i had left there. It finally died like it was out of fuel.
next day I take 5 gallons of fuel and put in it ( maybe the gauge is acting up like the horn, cruise and 4x4?), it brings it from 3/4 plus to full mark, so gauge is working accurate. I also keep a fuel log that says i went 100 miles since last fill up.
Get in, it fires right up. I leave it sit and idle while i park the car. About 5 minutes and it dies. It will start run a few seconds and die again. The more I try it the shorter time it runs.
Finally does not want it start at all. I read about disconnecting plug on inside left front of valve cover , that had not effect. Crawled under, and frame mounted fuel pump is running.
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I have a 2001 F350 7.3l diesel.
My truck died the other day while driving almost like he ran out of fuel. Well he had fuel so I checked the oil and it was dry. There was an ugly puddle between the intakes and a whole lot on the ground leaking out. Also the puddle looked blueish.
Put in more oil and got him home but I can't find the leak. The only thing I've noticed is that the intercooler on the cold side came off slightly. A year ago I had to go mess with the UCVH and when I put it back together I had lost a dang intercooler duct clamp and replaced it with a sturdy ring clamp. Well it wasn't sturdy enough.
How much would this leak if it came off for a little while and how serious of a problem would I have as a result? I don't have any check engine light and as long as he has oil he runs fine.
Since I have reconnected the intercooler and idle tested the truck I can't reproduce the leak. I don't believe that a huge amount of oil is running through that intercooler because the turbo is lubricated through another system I have read. So what gives?
Also I am getting weird dip stick reading. For a little while when I ran the truck today he was showing WAY over full on the dip and then down again a little bit below the operating range line. Also there are a lot of air bubbles on the dip stick when it comes up. Way more than I am used to seeing.
Also, I really like the idea of cleaning my engine off really good. It's a frigging mess now. What precautions can I take to clean it up good without making a huge mess. Can I just go the car wash that has a degreaser hose and drain and just spray it down like nothing or is it sensitive and finnicky when wet? Cleaning between the intakes seems almost impossible without getting the whole turbo system out of the way. Should I be thinking about that?
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I was driving down the highway when I lost all oil pressure soon after I lost power steering and the engine died. I have checked the radiator and it is still full of fluid pulled the starter off and try to crank it it still turns the cannot get the engine to turn over it clicks but wont turn over there are no oil leaks underneath the vehicle that I can see. I'm just not sure where to go or what to do from here
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While pulling onto the highway and pulling pretty hard lost engine power all boost then engine truned off. Top of engine is covered in oil..... What happened?
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I was driving on highway about 55MPH when I lost power suddenly. I was able to pull off, but did not have power brakes or power steering. Gas tank was near 1/4 gallon on the gauge, but sometimes my gauge is wrong, as I've run out 2x when I should have still had a few gallons in it.
At first I thought CPS, but I didn't have a spare with me to swap. Well, after an hour or so, I cranked it, and it would turn over but not even try to start. I floored the gas pedal and it fired up and I was able to get home.
During the no start issue, there was no oil pressure reading on the gauge and the tach was not moving, even though it was turning strong. There was no white smoke that I could see either.
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Ok so this past Saturday I drove the truck about 40 miles round trip to get fuel and came back to the house to pick up my tux for a wedding I was in that afternoon. On the way to the wedding I went about 10 miles down the highway doing about 65-70 mph and all of a sudden I heard the engine just shut off. No stutter or anything.
Went to restart and nothing just cranks. had to call and get a tow back to the house real quick and grab the excursion and head to the wedding. When I got home on Sunday I hooked AE up and started to poke around.
RPM around 150-170
Batt Voltage 11.5-12
IPR up to 65%
ICP 0 (have tried to unplug and start) (sensor is dry no oil bleed through)
Buzz test is good all injectors are strong. I am sure it is the lack of oil pressure but I dont know why. I can get more info from AE if needed.
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So there's no signal/ electrical feed to the passenger side cylinders. I ohmd all the UVCH and they check out. Moved the wiring harness around near the big black multi pin plug under the air intake to the turbo and the passenger bank kicks in and out so it's definitely a wiring short. Need links and pics to that multi pin plug to troubleshoot the wiring.....
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So, I just had the fuel pump replaced on my '15 6.7 a month ago and it just died again. (next day edit: it didn't actually die, it showed all the same symptoms)
Same symptoms: whining sound, low fuel pressure warning, reduced power warning.
This time I'm 50 miles from home so I pulled off the road before it shut off. Interesting, I was in a hilly area and my low fuel warning came on too. We are waiting for a tow. I was considering trying to push on but don't want to get stuck in a dangerous spot on the highway. We're in a church parking lot.
So, last time this happened I was on flat road with about a half tank of fuel on a lunch break. I ran a mile after the warnings came on to feel out the issue and to see what would happen. I happened to be only about a mile away from my dealer so I drove that way. I got reduced power warning and then it cut power on me (limp mode). I made it to about 100 yards away before it cut off.
This time, I was in a hilly area at night on a windy two lane road with no shoulders in the woods. I was miles from civilization and was showing below a quarter tank of fuel. ~100 miles to EMPTY. I got the low fuel pressure warning first and then the reduced power mode before the whining noise started. I was climbing a hill on a curve at the time. I drove a quarter mile and then pulled off the road into a parking lot so I wouldn't be stuck on the shoulder. It didn't actually go into limp mode.
I let it sit a few minutes, talked it over with the wife and decided to call for a tow. After talking to the tow truck driver who said he would be an hour because he had to go find a bigger truck, I decided to see what I could do while I wait. I fired it back up and the fuel level dropped to below 1/8 and I was now showing 33 miles to EMPTY. I was parked on a hill with the back end up. I had backed the truck into a space to make it easier for the tow truck driver. I let it run a minute, checked for leaks and it seemed to run fine with no studdering or additional warning lights.
CEL was on but no new warnings. I put in my code reader and pulled the P0087. Just one code. I revved it a bit to see if there were any issues. It seemed fine so I decided to try my luck. I started driving towards home with the intention to stop at the first diesel station to fill up. Truck ran fine. After two minutes of driving gently, heart racing, my fuel level came back up and it now read 88 miles to EMPTY. I drove 11 miles to the nearest station and filled up. No issues. I shut it down. I fired it back up. Still no issues so with a full tank, I drove home the remaining 30 miles without issue.
Planning to take it in to the dealer Monday to get it checked. Could this be from an air pocked due to low fuel level and hilly terrain? Is my new pump dying already? Is there something else going on inside the tank or elsewhere?
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I want test my fuel pressure. What is a good gauge or kit to buy? My truck has lost power towing and is now starting to miss a little. I'm wandering if i my problem is in the tank. Is there a good scan tool that would diagnose things too?
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My truck died a few weeks ago on the highway had the hpop ipr valve and screen replace ran awesome for 2 weeks, shut it off ran into the store and it wouldn't start gave it a couple hours finally fired, started good the next 5 times go to start it the other day no start again, tried again 30 seconds later and starts trucks a 2006 with 226000km throwing no codes, I'm ready to go trade it off on a new one, where to start?
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On my way to work today it was raining so I turned my head lights on. All the dash warning lights came on and my truck had zero throttle response. I quickly turned my lights off. The truck went right back to normal. I turned my lights back on and nothing happened.
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Another "no start" issue... The details:
- 2002 F250 7.3L
- Rosewood stage two single shot injectors (rebuilt 1 week ago).
- DP Tuner
- Brand new OEM IPR
- ICP about two months old (OEM)
- New UVH's installed about a month ago
The issue: After installing the injectors and driving about 30 miles the truck died and will not restart. Had to have it towed home. Thus far, I've unplugged the ICP, switched out the CPS with a known good, replaced the IPR, checked the hpop simply by removing the fill plug on the top of the reservoir and gave it a quick crank - oil definitely came pouring out, removed valve covers and plugs to verify oil in the high pressure rails. Oil dummy gauge climbs after about 5 seconds of cranking and seems to hold.
Hoping it's not an injector failure as I just had these reworked. EDIT: Forgot to mention, not seeing any white smoke while cranking. Fuel bowl, full of fuel and fuel pump was replaced this past spring. What to check next? Tried taking a snapshot from a video to show the readings. The ICP seems low, and when unplugged shoots up the 2500, but still no start.
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On the way to work, the truck seemed to have a miss at idle and the CE light came on. Long crank to start leaving work, and truck starts losing power and eventually died. No smoke while it was losing power. Towed it home and checked the fuel pump and lines for blockage and found nothing.
2003 7.3 F-250 430K miles
strong cranking but no start no smoke out exhaust
Oil changed recently
IPR changed
Both UVCH gaskets and pigtails have been repaired.
ICP sensor and harness changed, also disconnected no change in cranking.
fuel filter changed today (no oil in bowl)
3/4 tank of fuel
dash gauge for lpop goes up to normal range during cranking and oil light turns off.
WTS light comes on and turns off as normal
tach gauge moves up between 100-200 during cranking
fuel pump turns on and pressurizes system like normal and turns off.
Ordered AE for the truck, and it directed me to the passenger side bank high open. Fixed the harness on that side and still nothing.
Sent off the IDM and it passed with flying colors
So now i'm leaning towards the HPOP, but would hate to fork over the cash for it and still not get anywhere. I'm going to take the valve covers back off and check the discharge ports for the injectors tomorrow.
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Headed to town with the kids and my truck shuts off going down highway. I pull over and start it back up and make it to 30mph and shuts off again. This time it will not start. I have 1/4 tank of fuel, I first thought it maybe the issue inside the tank causing it to shut off. I get some diesel pour it in and it fires up for about 15 secs and shuts off. I pull the fuel filter, making sure o have fuel in the bowl. Start it up and it runs for about 10 sec. I then swap out the CPS. Same thing, runs about 20 and cuts off. I then call AAA because I am tired and ready to go home. I have it towed to my buddy's shop. He has not looked at it yet.
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When driving my truck it coughs randomly not towing or anything going about 70 mph drops rps slightly and goes right back. It has 212000 miles new turbo and filters...
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I have a 2003 6.0 when it has having troubles trying to cut out when running low rpms but would throttle out of it then it lost all power cab filled with smoke and died now it does nothing won't even try to turn over everything under the hood is covered in soot I'm ready to pull the cab just wondering if I didn't loose any oil or coolant...
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Low power on my 2003 7.3 F350. The truck runs fine but I can tell it is low on power (seat of the pants). I figured it to be fuel related so changed fuel filter and oil with no change. When that didn't work I installed a fuel guage and this what I found. Key on no start fuel pressure 45 psi. Start truck the pressure will get up to 61psi. Under a load it will drop down to the low 30s. I have dropped the tank mixing chamber screens clean and so was the tank. Changed fuel pump and now under a load it drops to the high 30s. Does this sound like the fuel pressure regulator is leaking by and causing low pressure under a load? Truck is stock besides superchips 1705 programer.
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I bought an Autometer 4763 gauge that didn't come with the correct fittings to plumb the sender into one of the extra ports on the back of the bowl. I went to the Ace hardware store right across the street and they didn't have anything (not surprised) and then Napa. They couldn't find a fitting to match either. He found that the plug threads are 7/16 20 tpi and the sender is 1/8" NPT. He suggested getting a 7/16 20tpi bolt, drilling it rifle-style, and then tapping it for a 1/8" NPT. The alternative, and what I ended up doing, was to use brass fittings to tee it off one of the supply lines to the heads. I ended up going that route but wanted to know if I should have looked harder for the right fitting.
Here's a pic of what I have now. I've test fit it, and it seems to work although I will need to insulate the hard lines because they rub due to the offset.
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Looking for pics of where/how they mounted their fuel pressure gauge? I'm getting ready to install one.
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