Ford 7.3L Power Stroke (1999-2003) :: F450 Surging And Stalling Then Start Right Back Up
Jun 22, 2017
I have a 1999 f450 7.3 diesel that surges and will stall but will start right back up again and drive. It does this over and over but all ways gets back to the shop. The engine starts good when cold so glow plugs are working correctly. What I have done:
Fuel filter change, check electric fuel pump but have not replaced it. I have replace camshaft sensor.
What I have found d by inspection:
Throttle pedal has 2 electrical connections one for the IVS and one for the TPS. I have experience on the 7.3 IDI diesels but very little on the newer injection system.
View 10 Replies
Advertisement
I have a 2000 Excursion with the 7.3L. We bought it in February of last year with 81,000 miles on it, and it has 111,000 miles on it now.
First problem:
It threw a code today: P0683 indicating a communication issue between the Glow Plug Control Module and PCM Communication Circuit. Other than the code, the truck isn't doing anything out of the ordinary today. Drove it about 40 miles, up to 80 MPH, problem three below did show it's head once, but other than that it ran great.
Second problem:
Ever since we've owned the vehicle it has done a strange surging/near-stalling thing (for lack of a better word) when it's started up. It only does it occasionally, and the problem seems to appear, and then go away for several weeks or months only to reappear. Here's how it goes:
- Start truck
- After starting the truck immediately begins to surge (rev?) and then nearly stall.
- It will do this over and over, about one surge/near-stall cycle per second, until I tap the accelerator, at which point it stops immediately. So far it has never stopped on it's own, but has always stopped with a tap of the accelerator.
Up until recently I chalked this up to "huh, that's weird" since the truck has otherwise run fine.
Third Problem:
Every once in a while the truck will hiccup while it's up to speed. It only seems to do it at highway speeds, typically between 55-70, and the hiccup typically only occurs once.
The first time I distinctly remember it happening was right after I had replaced the Camshaft Position Sensor (approximately 5-6 weeks ago).
While digging around online I found one other guy say his truck started doing the same thing after replacing the CMP in his F250 with the same little plastic gray one I used. So that problem might be caused by that part.
My Thoughts:
It seems like the run-away favorite for fixing problem one is to replace the GPCM. I've dug through a couple hours of forums this afternoon/evening, and it looks to me like the GPCM is the culprit the vast majority of the time when code P0683 comes up.
I'm thinking problem 2 might be an ICP issue. I can't find any previous forums anywhere that describe the exact issue I'm having - or really anything very close. Maybe it's out there, but I couldn't find it. So I'm really grasping at straws.
Problem 3 could either be related to the ICP (if problem 2 is an ICP problem) or it could be due to the new CMP I installed (the cheap gray plastic one from Autozone). It's possible the hiccup has been around longer than I think. Half the time when it happens (or does it?) I can't decide if it was a hiccup or a bump on the road I didn't see. I am sure it's happening at times, but there are other times I'm not sure if it was a hiccup or a bump I just didn't see. So I think it's possible it's been going on longer than I realize, and I noticed it that first time because I had JUST been under the hood and pretty finely attuned to how the truck was running as a result.
I'm about to hitch my 35' camper to this truck and haul it a few hours and I'm not feeling real confident right now. Problem 1 hit today, problem 2 is more prevalent than every right now, and problem 3 has been hiccupping for 5 or 6 weeks. I'd like to get at least problems 1 and 3 sorted out before hauling 8,000 lbs if possible.
View 8 Replies
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.
View 14 Replies
i have a 99 f450 7.3 that cranks but will not start. I did an injector buzz test but it sais no communication between the computers. it has a new rebuilt engine, new ipr, icp, hpop, water pump, and both computers.
View 4 Replies
My truck - early 2000 CC short bed, 300K miles
Background on my problem: I had a short list of long overdue maintenance and updates to do that time and money kept me from tackling. Found a little of both so I replaced the water pump, HPOP lines, re O-ringed the HPOP/IPR, deleted the AIH, replaced all of the brake lines in the engine bay, put new fuel lines to the filter bowl. All of this took me about 2 weeks so the truck sat with the batteries out for that long.
After buttoning it all up, it fired right up, a little slower than normal but figured that was air in the fuel lines, HPOP, etc. The only issue I had was the battery light stayed on. Thinking I had an alternator issue, I checked it and it was getting about 14.25v so figured that was good. I used it regularly for about 3 weeks, the light stayed on, and noticed some surging during warm up and some low rpm hesitation.
Then it stop dead on me driving down the road. Turns out it was all my doing, I had torqued the bolts on the water pump pulley but didn't use Locktite. The bolts backed out, shredded the belt, and ended up yanking the CPS wire harness out of the sensor. So that made total sense.
Fast forward another week, got new wiring pigtail and CPS (never replaced it before now) from a couple of the good FTE vendors. I am not sure about the wiring on the pigtail, my truck has a green, blue and brown/gray wires, the wiring diagram I found online showed green, blue and gray. I wired it connecting the brown/gray where the gray line goes (center contact) and closed everything up.
Another thing to mention is that I have an Edge Juice with Attitude that has been on the truck since '06. I lost that connector in the process and they were absolutely no support in trying to get me running again. Wouldn't or couldn't tell me which wire they connect to so I used the green wire which is the CPS signal wire to the ECM. Once I am running again, going to get rid of the Edge.
So that is where I am now. No start, I've been reading some of the "what to do" posts, the most likely is that I don't see the tach bounce when trying to start. So I want to check the wiring to make sure I have good connections to the CPS.
So I don't have any diagnostic software to read codes, etc. I really need to fix this myself and only have one set of hands most of the time. Not really sure what the problem was before it stopped running and now I can't diagnose the surging and hesitating.
View 14 Replies
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.
View 6 Replies
I have a 1999 Ford F450 Tow truck with a 7.3 turbo. It loses power and misses when I give it gas but when driving normal speed no problems.
I had a ford technician look at problem with a computer and he said number 8 injector . Today number 8 was changed.
Test drove it same problem. I also changed th fuel filter. And I emptied the tank to make sure No water
View 4 Replies
I have a 2000 F450 with a 7.3. I am having problems starting it. Batteries are good, engine turns over strong. It has started a few times after a extremely long crank (so long I am sure I am burning out the starter). I have replaced the CPS since it was cheap enough but that didn't make a difference. I have unplugged the ICP and it is very oily inside the connection. Does this mean the ICP should definitely be replaced? The truck will not start with the ICP unplugged. Should it be able to start with the ICP unplugged? Other items I plan on looking at at the IPR and possible the IDM box. Am I on the right track?
View 11 Replies
My VIN inside the door is scratched enough that the State can't verify it. They need two locations to match the VIN otherwise the vehicle must be scheduled for a "level 3" vin inspection hundreds of miles away. Well I tried to find one on the engine where the DMV can do a "level 2" vin inspection but I can't find it. Where other vin's are on my 2002 Ford 450. Mine is a flat bed.
View 4 Replies
I have a 2000 Ford F450 7.3 4x4 dully with a PTO driven winch 108,000 miles. The truck has develop a transmission slip.
I have changed the transmission fluid twice and it drives better but it slips badly. I can drive it up to highway speeds but it has problems getting from 0 to 10 MPH. The transmission runs hotter then normal but nothing major maybe around 205 degrees
Do I need a complete rebuild? This is a beater truck that I use to tow mainly. It is not worth a major investment. I need the PTO gear and 4x4.
I have several 2000 through 2003 7.3 E350 and E450 short school buses. Does the transmission from these has a PTO gear? I am thinking of pulling the transmission from one of them and swapping it.
It looks like the transfer case just bolts to the back of the transmission; I believe that a 2wd van 7.3 transmission will work with the 2000 F450 setup.
View 2 Replies
I have a 2001 F450 7.3 chassis cab with just over 100k. I have a new problem... So far on two different occasions the service engine came on followed by a loss of power under a load and white smoke from the exhaust. Took it to the shop the first time, they determined it to be a dirty air filter, which seemed odd since it just happened all of a sudden. They changed air & fuel filter, problem gone- for two weeks..
View 8 Replies
So any ICP sensor been proven bad but i was not leaking oil? The symptoms of my truck sound similar to a bad ICP...fluctuating idle, surging, stalling, but it does run and start. IT tends to start acting up when it hits operating temp.
I have an 04 and the ICP sensor is in the easy spot to get to on the valve cover vs under the turbo (that's awesome) so its an easy swap. but just wondering if there is any way to test it over simply swapping it. I do not have a monitor yet but a dongle is on order and will get the torque app for my tablet.
View 14 Replies
I've done everything I can think of, ive replace the starter, batteries and altenator, both batteries have at least 12.30 volts when taken out and checked, but i turn the key and it will have power then try to start and whole system dies and wont come back on, I've cleaned the terminals and posts to shiny and the ground connections but its still not getting power.
View 1 Replies
I have a late '99. It's been weak all summer. Took it to the dealership. They put it on the computer and said the only problem was bad injectors. Specifically #8. I replaced them all. It's still weak and now is starting to surge going down the road. I have my suspicions but I'm not a mechanic.
View 14 Replies
I have a '01 7.3 Excursion 2WD. 220,000 miles. It has a 4" exhaust, K&N filter and Edge Reprogrammer set on emission illegal. It gets the best fuel economy and moves out very well for 8000 lbs. Recently, I started to feel a surge while making light throttle acceleration. For example, round a corner at 35 and try to gently resume the 45 Speed limit. It begins to accelerate and then cuts out or surges, sometimes several times. If I lay into it, it responds fine. I have serviced the air filter, the fuel filter, use synthetic Amsoil. I did notice a slight improvement after the service. Less frequent cutting out or surging. I also was in an area where Bio diesel is readily available. I added almost a full tank of B10 Bio and it seemed to work. Changed the fuel filter just after.
It has been cold for NC. This morning it was +14 when I started the truck. It seemed to finally catch on maybe 2 cylinders with lots o' white/ blue smoke. It cleared out in a few minutes and seemed to be hitting on all 8, or at least 7. Once it warmed up, it's fine. But I had the codes p0672, p0674, p0676, p0678. My question is: Is there a common thread in the fact that it appears that I lost 4 glow plugs on the same bank?
One arm chair quarter back's response to the surging, is that the under valve cover injector wiring harness may be breaking down, especially since the truck has 220,000 and the valve covers have never been off. I have a fresh turbo with the good wheel sitting ready. I have just been too lazy to swap it out. Would a fresh set of injectors be a wise choice, when I swap over?
View 14 Replies
I've been battling this truck for over a month now and starting to go a little crazy, It's a 2001 f350 7.3L, with a "used" 7.3L engine from a 1997. Transferred all the necessary parts to make it happen. Keep getting the evil p1316 idm codes detected coming back upon start up. Anywhere between 5-30seconds after starting the left bank dies. I've gone threw and replaced the IDM with a reman unit. New valve cover gaskets (with new harness). even went the extra mile and put in a new power wire (for the driver side) running directly from the new valve cover into the IDM bypassing a connector above the left valve cover. All injectors are checking out around 3ohms. With glow plugs all around 1-2ohms. What's interesting about this is, I can disable any one of the injectors on the left bank (doesn't matter which one) and the engine runs great considering it's down on one cylinder. But when I hook up that last injector it will kill the whole left bank again.
View 13 Replies
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 Replies
My '03 7.3 is "surging" on idle. When warmed up, and idling, the RPMs will drop by 300 or 400 for a few seconds and then will correct and shoot back up. It cycles like this (every 5 seconds-ish) continually . I just put in a new IDM and checked the UVCH - is there a separate idle control mechanism that I need to have a look at? (2003, 7.3, 214K, stock).
View 14 Replies
I have a 99 f-250 with about 250k miles. Truck is completely stock. It recently has developed a problem where when I start it in the mornings it surges at idle, 200 rpm or so. Sometimes it tries to die and did once but started back up. When driving it continues to rev itself up and is jerky. It runs rough and sounds like it could be missing on a cylinder. At other times it runs fine just like normal. Yesterday morning it started with these symptoms so I put in a new ford CPS. It ran great for about 100 miles that afternoon. This morning it started back with the same symptoms. The SES light stayed on longer than normal when I started it, but it went off. I don't have a scanner.
I thought it might be water in the fuel because this started the day after I filled it from my transfer tank. But the water in fuel light has never came on. I put a new fuel filter on it but it made no difference. Have pulled filter three times looking for water but never found a drop. Also pulled several buckets from the bottom of my transfer tank but found no water there either. Where to look next?
View 5 Replies
I have an early 99 F-350 with 268K miles. It is bone stock right down to the factory exhaust. A couple months ago I started have a rough idle and surging while driving problem. I never got a check engine light but I borrowed a scan tool from a friend and pulled the following codes: P1690 (wastegate solenoid), P0381 (glow plug circuit malfunction), P0269 Cylinder 3 Contribution/Balance Fault, and P0284 Cylinder 8 Contribution/Balance Fault.
I did some research and everything I read said it was most likely the CPS. So I changed the CPS. The truck ran fine for for a few days but then it started acting up again occasionally. I noticed that most of the time when it acted up was at start up when the engine was cold and I also figured out that if I shut the truck off and re-started it (sometimes I had to do it 2 or 3 times) it would clear up and run normal.
A buddy of mine that has a 2000 F-250 said he had a similar problem with his truck and it ended up being the ICP sensor. We switched his ICP with mine and I changed my oil at the same time (because it was due for an oil change). My truck ran flawless for over 2-weeks (over 200 miles) so I put a new ICP in my truck. Note: my buddy did not experience any problems with his truck with my ICP in it.
I've put about 700 miles on the new IPR and the truck has started to act up again. Once again shutting the truck off & re-starting it will clear it up and still no check engine light. I took it to a local "diesel specialty shop" while it was running rough and they hooked it to their scanner and got P1280 (Inj. Control Pressure Low), P1690 (Wastegate Solenoid Fault), P0381 (Glow Plug Indicator), P0269 Cylinder 3 Contribution / Balance Fault, and P0284 Cylinder 8 Contribution / Balance Fault.
They never did anything other than hook it to a machine & check the codes but their diagnosis is my High Pressure Oil Pump is going bad and my #3 and #8 injectors are going bad. They recommended I let them replace all 8 injectors and the High Pressure Oil Pump. The problem I have is they can't give me a REASONABLE explanation as to why re-starting the truck a few times clears up the problem.
View 14 Replies
I have a 45 min drive to work every day, all highway. Lately on the way home in the afternoon I have been experiencing a surging noise that seems to just happen while I'm doing hwy speeds. It sounds to me like the fan is tuning on and off. Is that possible? It comes on for a few min. And then off again. I have new icp ipr cps. New oil and filter and fuel filter.
Also I'm still having a battery light on and off issue while I'm driving. Is possible the two issues are connected. I plane on doing extensive search for a bad wire this weekend. Batteries and alternator have checked out and are fairly new.
View 5 Replies
