Ford 7.3L Power Stroke (1999-2003) :: SES Light On / Shuddering At 40 - 55 MPH And Cold Start
Feb 16, 2016
I bought a 99 f-250 7.3 a month or so ago and am impressed with the level of knowledge and hospitality you all show. This is my first diesel so I am completely new to a lot of the issues that occur with one and many of the diagnostic tests needed to troubleshoot.
When I purchased the truck the guy said it was very cold natured and I would have to plug in the block heater if it got chilly out. I didn't realize just how bad that problem was and have since had to keep it plugged in even on very mild nights to get a quick start. I have been very careful to let it warm up for 15-20 mins before I start driving it.
Also, I have noticed at around 40-55 MPH and light pressure on the gas I get a shudder, it was worse before I added a friction modifier to the oil but it is still there constant in overdrive.
As I was driving two or three days ago in a light rain (the first since I bought the truck) I noticed the SES pop on and stay on. Being new to the diesel world I immediately pulled into Autozone and tried to get a code, but with no luck. The truck has been running a bit rougher since the light came on and I am noticing a marginal power loss.
So my questions are: Where can I get the codes pulled off? I have been looking at buying a scan tool but the AE is out of my price range and the other options seem to have mixed results. Also, do any of the problems seem to be related or could it just be a few different issues that need to be ferreted out? From what I've read it seems possible for the UVCH to be the issue here, is that correct?
Again, I am really new to diesels so I may have been having loss of power even before this and not known it due to my inexperience.
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On my 7.3 super cab, I changed the fuel filter last Friday and now on cold start the service engine soon light comes on for a couple minutes (approximately) on a cold start. No other issues. Tried scanning with my scan gauge 2 and no codes. (of coarse I think that thing is a joke for scanning). Not sure if this means anything, but last week before I changed the filter I thought I smelled diesel fuel on a couple different occasions. If I actually did it may not even be related.
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I will start with what I have done to my truck. Hutch and harpoon mod, fuel pump, new orings on fuel lines, fuel filter, air box, 4" exhaust. My issue only happens when my engine is warmed up and I put it under a load(driving up a long hill or pulling up a long hill). My truck starts to shudder and feels like missing until it looses all power to where it won't even pull itself and will just barely idle. It doesn't die though. I watch the engine oil temp and it seems to be around 195-200 when it occurs. I can turn the truck off and let the oil temp cool to 150-160 and then start the truck up it will miss for a second then clear up. I will start driving again and it seems fine until the oil temp gets up and start putting it under a load. I have read many posts and can't figure out exactly where I need to start. Some of the codes I pulled are P0603, P0470, P0732, P0542 and P1211.
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I have an 02 f250 230,000, first 7.3. I've owned it since Oct and put less than 6,000 miles on it. I have another cold crank no start. New glow plugs and Glow plug relay last weekend. Worked fine that weekend. It sat all week, then crank no start fri night, it was like 70 degrees for the high that day. Plugged it in over night and it started. Did not fire right up cranked it for a couple seconds. I drove it all day, started every time. Valve covers have 5,000 miles on them. Fuel Filter heater fuse not blown. But don't know how to check it for sure. And don't know where to go with it from here. Getting frustrated with crank no starts. No troubles found.
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2003 Ford 7.3 E450 ... Just recently got Auto Enginuity Ford enhanced
The problem....The van will run when plugged in for 2 hours or on either. Once started the van runs good. It will not start on its own even at 60 degrees
I got the following codes
KOER (Key On Engine Running)
P0476 Exhaust pressure control valve range/performance
P0673 Cylinder 3 glow plug circuit
KOER (Key On Engine Running) Cylinder Contribution
P0278 Cylinder 6 injector circuit contribution / balance fault
KOEO (Key On Engine Off)
P0113 Intake Air Temp Circuit High Input
KOEO Buzz Test (Key on Engine Off Buzz test)
successful
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I just started having a cold start problem with my '02 Excursion this fall and I'm at my wit's end trying to fix it. Truck starts fine above about 45 degrees and when it's warm. If I plug in the block heater it also starts fine in the cold. If it's not too cold I can eventually get it started by continuing to crank it. It blows white smoke while cranking and for a few seconds after it finally turns over. Smells like fuel. Runs rough for 30 sec after starting when it finally turns over. Definitely seems like glow plugs aren't working. This truck started no problem on GPs alone without plugging in down to -20 deg F before this year.
I started by cleaning all battery connections, including the two ground posts on the engine block, I replaced one bad battery (diagnosed by Autozone; other one was OK), I checked the resistance of the glow plugs (only a few years old with about 30k miles on them) through the connectors on the GP control module (all were about 1 ohm), and confirmed 12V at the power pins in the GP control module connectors. I then replaced the GP control module and the problem is still present. Battery voltage drops from about 12.6 V before I start the GP cycle to about 12V when I turn the key to "ON" and the GP light comes on. How much should the voltage drop when the GPs are on? What the heck else could be wrong??
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Ok truck would not start when cold outside. So I put a gpr on truck. Truck alt would only put out 11.5 ... After I put it on. So I put 4 new alts on all read the same 11.5 and the battery's would drain over night. Turns out they gave me a starter relay. So I have the proper one now. Now when u turn the key the everything is flashing the dash dome light buzzer. But take one of the small wired off the gpr, it stops but I have no power to the starter. It's been 2 months of hell trying to figure it out.
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So back ground is as such. Truck started fine before I replaced the hpop with t500 and did the driven diesel regulated return. I have double checked everything is plugged in. Now when I try to start it cold it will just crank. Yes I get smoke and oil pressure both places. If I give it a shot of ether it will start right up and run fine all day. What am I missing? Yes I know ether bad.
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I have a early 99 f250 super duty 7.3l and it's giving me fits. about a month ago the truck started to do a hot no start. drove truck for about a hour. Shut it off and half hour later no start. Let it sit over night and would start with long crank.
Changed CPS no change. Pulled tuner and set back to stock. No change.
Changed fuel filter, no change.
After reading forums changed IPR and truck started and ran great. About a week ago back to the same problem. Battery's are about 2 months old. Oil change and oil filter a month ago.
Checked the hpop reservoir and its 1/2 from the top.
Checked fuel bowl and it has fuel. no sign of oil in it.
Drained bowl and watch bowl fill back up. seems to fill quickly.
Pulled passside valve cover to check for bad orings while cranking.
Every thing seems fine. have not done driver side yet. used FORSCAN and ran buzzed test on injectors and they all buzzed what seems to be about the same. ran test couple of times to make sure. this morning I ran a live scan while cranking and this is what I got right before it started. ICP 660.6psi, IPR 64.84% and RPMs 227. took 8.86 seconds to start. after work scaned again for hot no start and this what I got. ICP 292.9psi, IPR 55.86%. and RPMS 203. unplug ICP and no change. still will not start. one thing I did notice when plugging ICP back in I looked down in side at the pins and can see what seems to be bubbling around one of the pins. the pig tail has just the slights sign of oil.
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My truck is hard to start when cold and I suspect glow plugs. But it is not showing any codes? If it is a glow plug or glow plug relay at fault , should it throw a code?
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I have. 2001 excursion with a 7.3l deisel. 167100 miles
It runs great but if it sets over night when the motor is cold it will not start.
You have to plug the block heater in for about an hour or more for it to start.
To me it seems like glow plugs are not working? It had new glow plugs out in from the po.
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I am intrigued by this engine and it's cold start issues so I am trying things out to see what works. If I plug it in it starts like summertime. If it's as cold as 30* out I run the glow plugs for two minutes and it starts without much effort and once running purrs like a kitten, no chug a lug, no romping, little smoke. When it gets down into the 20's I run the glow plugs for two two minute cycles, a little more cranking time but starts same as above. Down to 18* and I cycle the glow plugs twice for two minutes and it cranks, tries to start but won't. Key off, back on for two more minutes and it starts right up like a warm summer day. It hasn't been colder than 18* here this year so this is the end of my report for now. I haven't taken the time to check the glow plugs which is on my list but this summer it'll get done.
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2002 F350 7.3, MANUAL transmission ZF6.
Bought this truck used for hauling an excavator, and after fixing damn-near everything engine/turbo/and-cooling-system-related ---- it's finally seeing some use.
Just recently started hauling 12,000lb payloads. When I accelerate hard in Low gear, and then shift into 1st and accelerate hard again, I feel the whole truck shuddering. It's like a shimmy-shaking vibration all through the vehicle.
It doesn't happen in higher gears, only when the following conditions are met...
1) Starting from a dead stop
2) 12,000lb payload (heavy)
3) Accelerating hard (Low, First gear)
I would also like to add that I experienced this shuddering vibration very intensely when I put the transfer case in 4wd LOW (front manual hubs left unlocked) and towed 14,000lb up a steep hill in 1st, 2nd, and then 3rd transmission gears.
^^^ By leaving front hubs unlocked and transfer case in 4wd LOW, I was effectively lowering my final drive ratio even more for extra pulling power in 2wd hill-climbing. I don't do this often, only when absolutely necessary. ^^^
I must also add that I do have slightly taller rims/tires than OEM ford WITH the original ford gearing (3.73) so I'm more like 3.51 final drive ratio.
02 F350 7.3l ZF6
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My truck was shuddering in od. So as I last effort thinking it might be injectors I pulled all of them and replaced all of the orings and valve cover harnesses. After all of this was done seemed to do nothing at all. Now a new problem has surfaced. It's having idle problems. It will now idle at 780-850 instead of 650-700rmps. Also on deceleration it will miss pretty bad. Checked all of my injectors again all connections are good and all of the injectors are tight. Not burning any oil. So I unplugged the icp and bam runs like a top perfect running engine. So I bought a new one and plugged it in and itake doing the same thing. So what is going on! Also it was throwing a random check engine light but wouldn't bring a code up I'm completely lost....
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Ill start off with my mods and recent maintenance things I have done before fully describing the issue.
E99 7.3l with 190k on the clock
Full 5" turbo back
TS-6 chip
EGT, Boost and trans temp gauge
New ford glow plugs
Re-orings injectors
new valve cover gaskets
new fuel filter and fuel lines
new turbo with a ww2
Newer trans and oil pan
I think that should do it, now for my problem. The truck starts good cranks over once and is running with no hesitation, the engine run a little rough, more than normal vibration at idle almost like a small miss. No smoke at idle.
While driving with no/little load on the engine runs great , but under load there is a good amount of white smoke/ oil smell. The turbo is new and is not leaking oil I have already checked over that and the exhaust is new but there is some oil that is at the tail pipe in liquid form. The exhaust up pipe that goes to the turbo is not covered in oil either
The truck cruising in OD or in 3rd with O/D off around 2k rpms it shudders real bad almost like the truck is going to shake its self apart. but at like 2400 rpms and above its fine. Where is a good place to start the diagnosis as I am pretty new to the Diesel world. From what I've read it looks to be either rings are junk or maybe I have some bad injectors (thats what it feels like to me) but would that cause it to smoke like crazy?
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2000 F350 with 340000 on it, have had it for the last 140000. It's an old service truck from south west gas with one owner in between them and me and he put about 5000 on it. I have the big cylinder open air filter, billet compressor wheel, 4" exhaust all the way and an Edge tuner. Don't have any codes I can pull with the tuner. Have been good to me so fare only need regular maintenance, but always had smoke out oil filler with a little pulse.
2500 ago I changed oil and add 1/4 of Lucas oil. 3 days ago when I started in the morning it smoked white smoke out the exhaust as a steam train and idle rough, but cleared up as I went down the street and will do so every time I start cold or warm. Ok, might need new GP, did that yesterday yet the same. Now I start checking stuff and have smoke out the oil filler as a steam train so the cap won't stay.
I know it sound like alot of problems, just try to verify some of them. The smoke out oil filler is blow by? The smoke on start up is that related to bad injectors? Can a bad injector dumping fuel create the blow by? Coolant level ok Transmission fluid level ok Engine oil Rotella T6 added 3 quarter in 2500 miles. I do not have a scanner or any other advance test tools.
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When it is cold out side like 20 degrees I'm having problems starting my 2000 7.3 I'm cycling it about 5 times and misses smokes white for a bit then stays running I was thinking of changing out the fuel filter. What it could be?
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It's been a while but thats because the truck has been performing well.
Current problem: The truck has been hard to start this year as if the glow plugs are not working or are bad. It will start right up if I use the block heater.
Just recently, I also noticed that the EBPV is not coming on when warming up the truck.
Also, This winter season, the engine temp is not coming up to normal. the engine temp needle is more on the low side towards the C and definitely less than 1/2 way up where is normally is. When driving on the highway, the temp comes up more. but sitting at idle it barely gets warm.
So not sure if all 3 are related or not, but looking for a starting point.
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20 degrees out this morning truck not plugged in, didn't want to start had to cycle 4-5 times, each time waiting for glow plug Light to go out.
Finally cranked didn't sound pretty but cranked. Once it started idling on its own got out and seen a puddle of oil under the front of the engine drivers side center kind of.
Got up on the truck and shined a light in the valley and seen a puddle in intake valley. Heres my question? Where did this oil come from? Once it warmed up it quit and oil kinda disappeared from valley???
I had turbo off a few months ago because I thought I had a bearing down in it, but found some bolts lose. When I put turbo back on I broke the wire plug on front of the pedestal so I just left it unplugged. Very hard to cold start now that that is unhooked.
Did leaving this unhooked create a hard cold start? Should I put another pedestal on it with the plug or install one without it? Also will it hurt to leave plugged in overnight?
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I recently purchased a 2000 7.3, when it's started cold it's lopes at start up unless I give it some gas and then it's perfectly fine. If the truck is plugged into the engine block heater it starts normal. I changed the oil the day after I bought it and put 15w-40 in it and then the rough idle started. So I don't know if it was like this before or because of the thicker oil I put into in the cold. It also has a service engine soon light on and the code that comes up when read is to the icp sensor. When looking st the sensor the blue wire going to it looks cut and is disconnected. How would I reconnect these wires and see if that makes the check engine light go off.
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2003 F350 7.3L 164k miles. Got towed in with hard to start cold complaint.
Hooked it up to the Snap On Verus Pro scan tool and we get up to 3000 psi on the ICP cranking, IPR value seems within spec, we have rpms over 100 on tool, pulse width within spec, computer voltage above 10v while cranking, verified output of glow plug module (California) and glow plugs get voltage for approx 50 seconds @ 80 degrees farenheit, glow plugs all read 0 ohms resistance.
injectors do NOT sound the same during buzz test.
Vehicle takes EXCESSIVE cranking cold to eventually get it started. LOTS of cranking. Just had to replace starter and a battery because driver burned em out. It feels like the vehicle shakes when it gets running. Black smoke when revving cold. Sometimes white smoke while cranking.
Once the engine has been warmed up, it starts perfectly every time.
I have spent two days in the engine bay looking for chaffed wires and doing diag and my current diagnosis is bad injectors. I feel there COULD also be high pressure oil leak, or a mechanical issue such as low compression. No compression guage yet for this truck. We have the ICP and IPR fittings to do a shop air test. Recently did a 6.0L and went thru everything and eventually diagnosed it as bad HPOP. LOW ICP pressure.
I noticed two of the cylinders were at maybe 8% Perdel on the data. Seems too high. Also, it "passed" the KOER self test and "passed" the injector buzz test with no codes after, but the audible sound of injectors didn't "seem" right to me, but I am new to these engines.
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