Ford Super Duty (1999-2016) :: 2003 V10 - Slight Miss With Pending P0171 Code
Nov 22, 2015
I just purchased a 2003 F250 Super Duty with the 6.8L V10 It has really high miles on it as it was a landscaping companies fleet truck. I'm sure that it was pretty well serviced as it has 300K miles on it and it's still running pretty decent.
I picked up the truck and I have to get the smog done soon. It idles with what I can only describe as a slight miss and it runs and drives great. seems to have plenty of power for the miles that's on it.
There is no active CEL on but I scanned the OBDII system and found a P0171 Lean bank 1 code in the pending codes list of the scanner. I guess this year engine doesn't have an EGR Valve or DPFE sensor because I've looked high and low for it and there non existent on this engine.
I've checked for vacuum leaks by spraying brake cleaner or carb cleaner all over the place and it makes no difference and all the vacuum lines and connections look okay.
When it's running It does sound like a vacuum leak right behind the top of the plastic throttle body but I can't find it, I don't know if this big *** engine just sucks that much air or what.
Like I said I need to smog this thing soon and I don't want it to fail if it's missing or has another issue. The fuel injectors look new and one coil pack looks like it's a replacement...
View 14 Replies
Advertisement
I have a 2002 F250 SD V10 4x4, that just started to randomly misfire [does not matter if the vehicle is in motion or in park]. I scanned the OBDII and found pending code P0720 (Output Speed Sensor). The CEL, O/D light, nor the ABS light illuminate. The speedometer functions normally.
This occurred Saturday after we got 12-18" of snow. I cleaned out the driveway, took a short drive (~ miles) & parked the truck (no symptoms). Later we went to 2 stores and then on the way home, the misfire started. The next day the misfire continues.
I have been searching & come up with the same posts that say the issue is not the OSS. It's usually a bad COP or bad wiring @ the OSS. The symptoms are not the same as when I had a COP go bad (only misfired under load between 1500 & 2500 rpm).
Personal issues: My truck does not fit in my garage, it's dark (and usually below 30 F) before I can get to look at it in the evening. Also, we are supposed to get another foot of snow tomorrow night.
View 12 Replies
This last April I was towing my trailer back from camping approx 125 miles when I detected a loss of power and a slight miss. I managed to make it home. It wasn't until I made it home that the engine finally started coding. Miss on start, a couple of cylinders missing and output shaft speed sensor circuit failure. So naturally, I decided to do what I felt needed done anyways, change all coils and plugs. Oddly the problem got worse to the point where I almost didn't make it home after test driving it, it kept stalling out and was difficult to keep running.
After some research and advice from others, I started replacing some components; MAF sensor,IAC valve, output shaft speed sensor. Nothing. In fact now the truck wont move, I start it up it idles a little rough, but then I put it into gear and with in seconds she shuts her self down. I've replaced the fuel filter, checked the fuel pressure and it is in specs. I've now had it towed to two mechanics neither of which have any solution. They've put expensive computers up to it and still nothing. I really do not know what to do at this point. Lastly the only code that continues to come up is P0720, output shaft speed sensor circuit failure, I really miss my truck!
View 9 Replies
On a 2000 F-350 with 5.4 engine, where does the vacuum line enter the cab? I got a truck in with no vacuum signal to the heat controls, and it has a slight miss at idle. Both of these are signs of a vacuum leak, but i can not find the line going into the cab.
View 5 Replies
I know this is a common code and a common problem. I have had a buzz test and glow plug test done, no codes. Scanner code came up with P0275. I have read about injector change out, to O ring failure, to new EGR style. I have a 05, 6.0 SD SRW auto.
View 1 Replies
I have a E350 5.4 with 200,000 miles and it ran great before winter, this spring I fire it up and it got a miss I drive it anyway it starts to clear up and now the 1289 code. Everything looks fine coolant engine temp. I wonder if you can bypass the Cylinder Head Temp sensor. I am thinking the engine management is causing the miss to cool the engine.
View 3 Replies
2002 F-250 5.4l 4x4 ... I am getting a P0171 code only, with strong fuel smell. No P0174 code. So it has to be something effecting just the one bank? Sprayed engine with starting fluid, no charge in idle. Replaced upstream O2 sensor, no change. Truck was running fine, and then just started this all at once.
View 5 Replies
Have an intermittent miss I can feel when driving 2006 F250 5.4 l 4x4 stick; Freeze frame from Cen-Tech 60794 (from Harbor Freight) scanner follows.
DTC CNT 0
DTC FRZF P 0352
FUEL SYS1 OL - FAULT?
FUEL SYS2 --
LOAD PCT 25.9
ELT (DEGREES F) 186
SHRTFT 1 0.0
[Code] ....
I can operate the scanner but what these ranges should be. What might be causing the miss? This scan shows 951 rpm, I was idling along in 1st in traffic, but I have also felt the miss at 75-80 mph (about 2300 rpm) on the Interstate and at other times, with light loads in the 1500- 2000 range in town.
View 2 Replies
Wife took truck out and turned around after going less then a mile, saying it was running very bad. We got this truck about two months ago at a state vehicle auction. It was a state used truck, 145,000 miles, 05 Ford F350, ext cab and 8' bed. Anyway at first I thought it was valve tap until research said an exhaust manifold. With a fog machine in rear exhaust pipe we confirmed it was leaking and replaced the exhaust manifold. Figured it was probably a good time to replace spark plugs too. Took truck for a ride and she still buck and farted.
Got a code machine and got P0171 and P0174. Couldn't find a vacuum leak, but your could hear the air being sucked in. went to local parts store, guys couldn't find leak, but they said truck sounded like a steam machine. today I made a homemade smoke machine and smoke came from air intake, figured the gaskets were bad. The pictures show what I saw when I took the gaskets off. The port that has melted is the same port were the exhaust manifold was leaking from. Am in deep "doo-doo". What caused this?
View 5 Replies
I have a 2003 f250 5.4 with a couple of bad valves and low compression and a dead miss because of it... I just bought what appears to be a 2001 5.4 from an f150... I am worried now this engine wont work and cannot find anything online that can tell me yes or no....
View 12 Replies
I've had DTC P0171 & P0174 (lean in bank 1 and lean in bank 2) for a few weeks now (check engine light cued me on it). Autozone scanned it for me. It's on a 2003 F250 SD 4x4 5.4L.
My first step was to clean the MAFS. Light came back on in about 30-40 miles. I then replaced the MAFS. 30-40 miles and the light came back on.
My first thought was disconnecting the battery wasn't resetting the comp and thats why the light was comming back on.
I went and picked up an Actron cheapy OBD II Scanner today at lunch. Cleared the codes with the scanner and drove back to work.
Checked the codes when I got back (no light on but was curious) and it shows P0171 & P0174 pending.
I've checked and the dipstick is seated properly. The hoses on the air intake appear to seated properly as well. The top hose is a pretty loose fit but it was seated all the way down. The top hose was oily. Not sure if this is normal or not. Could the loose fitting oily hose be the culprit?
Also, what is the lower hose? It comes off the back of the air intake and goes to the driver side valve cover. I know it's not the PCV hose as that is on the passenger side valve cover....right?
View 14 Replies
I recently bought an 03 F-250 6.0 Lariat crew cab FX4. It has an EGR delete, ARP studs, and the updated oil cooler. It has 138,xxx on the clock.
Randomly, only when it is at normal operating temperature it will have a slight shake to it at idle. when i try to take off from this shaky idle it feels like it is "missing" i guess you could say. it clears up about 1/8 a mile down the road every time. And i will go ahead and say this does not happen everytime it idles. Only maybe once or twice in a 30 minute trip.
What might be going on? I have not added a coolant filter yet, and it does not have synthetic oil in yet either (just bought it) I plan to use full synthetic Rotella 5w40 very soon. I think this might be a stiction problem? but i read it is uncommon to have stiction when warmed up. I do not have anything yet to pull codes or read the FICM yet. both batteries are good.
View 6 Replies
My 5.4 had a bad miss several months back with no cel. It would barely climb hills it never even needed extra throttle on before (3rd gear, wide open, 35 mph, etc). Ford dealer ran a scan and it had two bad coils and plugs. I changed those and it ran much better, but still had a "pfft pfft" exhaust leak type sound at idle. I checked the exhaust studs and they were all good, so I wrote it off as just a normal exhaust leak.
Full throttle in 5th gear to maintain speed limit when normal throttle before was sufficient. I got home and parked it and it sat over night. I went to start it today and it died. Tried again, died again. It only stays running if I am pressing the gas and I hear a fluttering or air sound of some kind coming from the passenger's side of the engine. It doesn't cut out or miss like a bad coil or plugs, but like you choked off the air supply.
All plugs are still in place, exhaust studs look good, tried it with the air box unhooked to see if it got clogged, and going to check intake leak tomorrow...
View 14 Replies
Having problems with 1999 or later 7.3 missing or dying when you turn on the wiper switch?
View 8 Replies
Got a 2001 F350 diesel auto, 295k miles.
It has miss when over 2000rpm. Below 2000 its smooth.
ICP has oil in sensor, ordered new one. Gonna change oil too.
CPS is new (not sure if its black or the other one). Starts idles and drives good otherwise.
Where should I look?
View 14 Replies
2010 f250 cc 5.4 145000 miles. I bought it last fall have not drove it a lot. When using the cruise control and a load is added grade or hill in the roadway. It jerks hesitates or miss then cleans up and runs fine. When using the accelerator it does not do this. No codes.... Thinking about changing the plugs.
View 5 Replies
I have a 2000 F350 cab and chassis 4X4 with V10 and a 5 speed manual (actually it's a 4 speed with overdrive). My problem is the engine seems to have a miss in it. When I first start it in the morning it usually runs good for 5+ miles till it warms up then if I am not pulling a load I can hear what sounds like a miss but the truck accelerates fine. If I am pulling a load I can also feel a slight steady consistent shudder and I can tell the truck doesn't have the power it should and the gas mileage SUCKS worse than it use to.
I ran a bottle of Lucas deep clean through a tank of fuel and that seemed to work a little but I will still encounter the problem sometime during the day. When the miss seems to be gone I can hear a very slight pinging noise when I accelerate or pull a hill with and/or with out a load. The pinging noise I hear sounds like an engine with a distributor that is getting to much spark advance if you have ever experienced that before.
I purchased this truck used several years ago and I don't know what the PO did but the check engine light is not coming on and it doesn't throw a code. I put 10 new ford coil packs on it about a year ago so I really don't think it's a coil pack, but I could be wrong. To me it sounds like maybe it an injector problem????? I know there are several sensors on this engine and I am thinking maybe a crank position sensor is not working right but I honestly don't know???? Is there a way to test this sensor?
View 7 Replies
I have a 2000 F-250 V10 that misses (cylinder 10) at the idle, once you give it gas it runs correctly again. I am at a loss. I have replaced the plug, tried moving coils from one cylinder to another to see if it shifts the miss, and it has new injectors. What this could be?
View 9 Replies
My 2005 f250 5.4 with codes p0171 and p0174. I have replaced fuel filter, MAF, Checked for vac leaks by smoke and water test.
I don't have a way to check fuel pressure on this thing since it must have been to much trouble to put that test port on the fuel rail!!!
View 10 Replies
I have a 1999 Ford V-10 Triton 6.8L engine with 100,000 miles in my Motorhome. Service engine soon light has been a problem for the past couple months. I have replaced the O2 sensor on the passenger side and the EGR valve. After that I drove for about 300+ miles continuously and stopped to get gas. Light stayed off and I thought I had it fixed but after starting up again the light came back on. The codes are P0171 and 0174.
I had the air filter replaced before changing the sensor and valve and mechanic left the Mass air flow sensor out of the socket I had a sluggish engine and at the time I thought I sucked water into the filter, I was driving in a pouring rain, this sensor plugs into the air intake above the filter correct?) I plugged that back in. What is my next move because I reset the service engine soon light and it runs great then the light comes back on after I shutdown and restart.
View 3 Replies
I got an 03 f250 with a 10 inch lift on 40x14.50 tires on 20x10 fuel hostage wheels. They rub my springs pretty bad when trying to make even the slightest kind of tight turn and the sound they make when they rub is even worse than them actually rubbing. My question is should i stay with this tire and wheel setup and try to get some 6061 billet aluminum 2 inch spacers? (I'm not sure about going that route though because of what i heard about spacers) or go down to some 38s with a 20x14 wheel that hopefully would push the tire away from the hub like spacers would do. I'm leaning more towards going to 38s because of the rubbing and also because I feel they might look better on the 10 inch lift rather than the 40s but dont know whats the best thing to do.
View 12 Replies
