Ford Super Duty (1999-2016) :: Missing Between 1500 And 2000 RPMs In Every Gear While Accelerating
Mar 11, 2016
2003 F250. 6 speed. 5.4 2v. 4x4. 165,000 miles
When purchased, there was a vacuum leak and truck ran like crap and PO drove it that way for a while. I fixed the vacuum leak, discovered a miss between 1,500 and 2,000 rpms in every gear while accelerating. No miss at idle.
The truck has:
- no CEL
- new Motorcraft spark plugs that were not dropped, bumped, or over torqued.
- new fuel filter
- new air filter
- new alternator
*The miss usually does NOT happen in the morning on the way to work after sitting 14 hours.
*The miss almost always goes away after the truck gets up to operating temp.
*The miss ALWAYS is present after work on the way home after sitting 9 hours.
Fuel pressure?
Bad COP?
Fuel Injector?
Something totally different?
View 14 Replies
Advertisement
I got a 2000 f250, 5.4l, I got a check engine light bout 2 weeks ago and didn't experience any driving issues. The code was p0171, just recently I've been experience troubles idling, if I let my truck idle for about 3 minutes it will want to shut off, also on acceleration the hole truck bumps, feels like I'm in an earthquake. Where I should start with this problem?
View 11 Replies
I have 2005 f250 5.4l 3v that was having miss problems between 1200 and 2000 RPMs. Changed VCT solenoids which worked, but then could hear chain hitting cover when powering down throttle on left side. Figured chain tensioner was bad, so tore down and removed timing cover. Found left chain was tighter than what seems normal, and right side had huge amount of slack. While taking off tensioner on left side, something happened to fast for me to see it, and still not sure if what happened wasn't just my imagination. I thought that the chain moved very fast for an inch or two. Anyways, I watched how to video on timing the 3v, but I am very confused about it. The left bank seems to line up on timing marks perfectly, but the right chain is off by at least 2 1/2 links. Not knowing any better, I removed three rockers on left bank (2 intakes and 1 exhaust) but only removed two intake rockers on right side. I don't know what I am doing and getting scared.
View 1 Replies
I have a 06 f350 with 5.4 140k miles. Recently it has been shaking bad on idle but only in gear and it's hard to start when cold. The exhaust is moist at all times and the fluids never leak. When you floor it it hesitates feels like it's overly rich but if you let off a little it stars to pull again. Also while cruising at 1500-1700 rpms in any gear it will surge and skip. Only time it will miss and the CEL comes on is over 4000 rpms for a random misfire. Just put new coils in new fuel pump and filter. There has always been a cat code but it never effected the drivability. Could it be injectors?
View 3 Replies
I have a 03 F250SD with ~145,000 miles on the 5.4L. Just recently I have been having what seems to be a miss, or possibly a dead cylinder. I thought it might be a dirty MAF, but I cleaned it and have the same problem. The miss is more noticeable at the higher RPMs. I am checking the plugs today. So any solution? I refuse to take her to the shop and having another man up in her manifold.
View 8 Replies
I have a miss at high rpms.. I pulled this engine, manual trans, and 4x4 axle and put them in my F350 Majestic motorhome. 156,000 miles on the engine. Slightly dusted engine with good compression 375-400 (cranking and corrected for altitude). Has a little bit of a long start.
No smoke on start up unless 10 degrees or colder
No smoke when pulling either.
Glowplugs ...Good
GPR... Good
Checked resistance from IDM to injectors ...Good
History of some ether for starting before I got my hands on it. I have AE with the ford enhancement. But I am new to working on a powerstroke and new to AE.
ICP ...new
CPS...new
Oil ....new
EBP...new
Installed a pressure gauge to the drivers side upper port on my fuel bowl:
60 psi at idle
55 psi at WOT 2500-3000 rpms under a load
HPOP stabilized pressure is 2750 @ 40% duty cycle
Truck still misses (semi-intermittently) at higher rpm with a load.
Rechecked codes KOEO: None present
I visually inspected valve movement while running (idle). Did the buzz test when cold.... All injectors sounded the same when tested individually.
Did a cct when not completely warm:
P0266
p0272
Repeated the test at normal operating temperature:
P0266
Torque values on rocker arms bolts and injector holds are good. Fuel quality isn't an issue since this problem has remained for 5 tanks of fuel. What I should do next?
View 1 Replies
Have a 2000 F-250 V-10 4x4 with 335,000 miles on the clock. Has started hesitating at 40-45. You can't really notice it at idle. Drove it around at lower speeds and just a miss here and there. Take it up to 40-45 and it's quite bad. Hasn't thrown any codes. Hooked it up to the scanner to get no additional info. My gut says coil packs but am kinda confused that I haven't gotten a misfire code yet. What to check?
View 6 Replies
Brand new to diesels with an 02 F250, 7.3 auto, 149k, 4R100. I have been hearing a whine (not the turbo...) for the last few days and after searching the web I'm freaked out about transmission issues. The whine is mostly present in gear while accelerating, I can slightly hear it in park/neutral as well. The sound is a little higher pitched than a power steering pump, pitch rises with acceleration but doesn't FALL as fast as the RPM with shifts, it lags for just a second then drops and starts the climb again with the next gear (i feel like this is indicative of something?). Runs fine and drives like what I would think is normal, only leak i see looks to be from valve covers making its way to everything. Transmission fluid looks great on the dipstick.
View 1 Replies
Ok so I'm having a problem that seems to have been getting worse. 1999 7.3, auto, 4 door, long bed, 6" lift. When I got the truck a while back I had a slight problem where if I was accelerating hard I would hear a clunk when it shifted into 3rd gear. I'm not hard on the truck that often so it took me a while to realize that the noise was the driveshaft hitting the floorboard right at the joint at the transfer case output.
The carrier bearing was flopping around a bit so I replaced that first. No better... kept driving the truck since it was only a problem while being really hard on it. But it's gotten worse so now when I tow (usually not more than 7-8k lbs) I have a bad vibration on takeoff at low speed. If I try to take off from a stop very hard with any load the driveshaft jumps into the floorboard. So I just replaced the transmission mount and checked the motor mounts, no better. Only thing I can figure at this point is axle wrap...?
View 14 Replies
My V10 was knocking when accelerating under 2000 rpm; rain and moisture made the problem worse. I discovered that the 2-part wiper cowl under the windshield allowed water to leak into the engine compartment and onto the throttle body, which then dripped onto the left side of the engine. This caused the spark plugs to rust and the 3 back ignition coils (coil on plug) on the driver's side to crack and fail. This caused a horrible misfire/knock that was worst under 2000 rpm especially in high gear and when the environment was wet. I fixed the misfire and cowling leak. Has not returned. I caulked the cowl and changed all my spark plugs and ignition coils.
View 3 Replies
I go out of town for work for a week and come back and my 1999 F250 V10 GAS, is acting up. It started when i tried to drive it and it didn't want to shift, it would rev up to 3000+ RPMs and finally shift really hard into gear along with the speed odo not keeping up and bouncing around not wanting to work. I also had my entire gauge cluster lit up with no key and door closed. all the lights were on and it was "dinging" like the door was open and it wasn't. you would hear it when you put your ear up to the door.
So my first thought was to change the VSS (which I did) no luck. So I started wiggling wire loops under the fuse box in the cab and the "dinging" quit.. i took it for a drive and it works like nothing ever happened. Obviously I am guessing there's a short so i brought it to my mechanic and hes saying he couldn't find anything by the fuse box but he thinks its closer or even attached to the gauge cluster itself. could this be true? Why would the gauge cluster loop throw off the shift points?
View 5 Replies
I'll try not to post an entire book.. But I bought a 2000 F250 not even 8 months ago, it did have issues before but I changed out the spark plugs and coils and it fixed it's original missing issues.. I also just recently changed the fuel filter but it didn't fix it's new problem.. It drives ok around town but if I get over 35 mph it doesn't run well... If I try to keep a steady foot on the gas but don't get the RPMs over 2000, the RPMs will stay where they're at for just a second then they will drop down and the whole truck starts shaking.. I push more on the gas and it shakes even more and the RPMs don't move at all until I really step on it.. It lacks in power going up hills as well... The dealership i bought it from said the Catalytic Converter was bad but my uncle who is a mechanic says it isn't.. It's the first vehicle I've bought so kinda wanna make it last..
View 11 Replies
I have a 2000 f250 crew cab short bed 7.3 on a 6inch bds lift and 37 inch tires. When I accelerate pretty much any load above 1200 rpms I can feel a vibration, kinda feels like it may be coming from the front left but I'm not sure. I have heard that a wheel bearing going out can cause this, would this maybe be what's causing it?
I thought wheel bearing because it kind of sounds like there's a howl when decelerating, probably when accelerating as well but the trucks too loud and I can't hear it. or also have heard motor mount gone bad, I've also heard ujoints but the ujoints were done this summer. the front ujoint is bad but the front driveshaft shouldn't be turning when out of 4x4 and hubs unlocked.
View 4 Replies
My 2000 ford f350 will start and then dies on me when i try to put in gear. I changed air n fuel filter. Adding oil i noticed the stick was still reading dry. Noticed a big oil spot under the hood. What should i try to do? Do not want to put in shop cause every time she goes in I come out broke.
View 1 Replies
I recently purchased a 00 F250 psd 4x4. Other than doing all of the fixes it needs to make it ride better I have been questioning the trucks "get up and go" and the EXTREMELY sensitive skinny pedal. Truck seems to pull very hard and puts out some black smoke under hard throttle but nothing like the really tuned trucks I have seen. But the skinny is so sensitive its hard to drive under 40mph in 3rd and once it gets up to 55 or so its real sharp getting on and off the throttle. Trans shifts great, TC locks and unlocks, truck runs awesome IMO but just a bit harsh. Is there a way to find out if it was tuned prior to me buying it other than inspecting for a chip, or is this the way they are and I just have to get used to it more...?
View 9 Replies
When passing or going up small inclines on freeway, my F250 seems to make the shift to the passing gear but then almost a complete loss of power. Jerks around for a few seconds and finally provides enough power to at least get back to the original speed. (It feels kind of like the lurching, etc. I used to get when those stinking GM diesel injectors would act up in the 1990's.)
It also stays in first/second as I punch it while entering the freeway and doesn't want to make the shift. I can put it in neutral and race the engine, so I don't think it is an engine problem, unless the transmission is electronically controlled. I have a lot of computer dashboard gauge resets after falling to zero and sometimes have to set and release the parking brake to get the auto door locks and windows to work. (That started after a car break in where the door electronics were apparently pinched, but that was a couple of years ago.)
Does it sound like the transmission or electronics? In the old days replacing an automatic transmission filter seemed to fix a lot of transmission issues. Not an option now, but would I expect to see any results doing a transmission flush and fluid change? It's probably been about 60000 since I had that done. (157000 now).
View 2 Replies
The issue is with my 2000 F350 crew longbed V10. Other than a BTS trans put in a little over a year ago, and FoMoCo motorsports headers, the whole truck is bone stock. Oh, it has that fantastic auto-hub thing with the fake locking hubs and the little switch on the dash (I'd love to convert it to a manual shifter...?). 174k on chassis, so things need to be done, 40k on engine, 3k on BTS 4r100.
Yesterday I was running around town, made a stop, and when I started moving again got a loud grinding from the front axle. Thought maybe I'd picked up a rock in a caliper or something, so I jumped out and checked everything, no joy. Moved forward, there it is again. No vibration, but loud enough (or telegraphing enough) to hear clearly in the cab. Let the truck roll forward, popped in to neutral, noise fades away. Back in to drive, there it is. So, now I know it's trans/t-case/driveshaft/related. I recently put new vacuum lines in, checked all the connections, and pulled, cleaned and lubed the hubs.
And since the trans is a nearly new BTS that is working just find, I'm narrowing the search to the hubs, drive shaft, t-case.
Get home (noise abates above 30mph, or everything else drowns it out), crawl under, and find the front driveshaft is locked. Ok, stuck hub? Pull out both the fake locking hubs, and now the shaft turns. I can turn each front axle by hand at the u-joint, and I kinda hear a faint grinding on the right side (will bad needles make noise only under a load from the trans and not coasting in neutral?), and when I swing the drive shaft around the left axle moves, right doesn't, etc etc.
I'm going to pull the drive shaft today and check the U joints, and drive a bit to see if the noise is still there, but I am thinking I might have some bad needles on the pax side axle...
View 4 Replies
I have a 2000 f250 superduty gas v10 6.8L . I bought this truck about 4 months ago. Now when I take off from a complete stop the truck shakes up until second gear, shifts fine all the way up until the last gear it looses power "loosing power" i mean i can put my foot into the pedal and it takes forever to climb speed meanwhile the RPM'S never skyrocket like it the transmission was slipping if anything a couple times the RPM's dropped are stayed the same then as i take my foot off of the pedal once i have my desired speed sometimes not always the truck will give me a little jerk Also Just the other day I was driving on the highway and decide to put her on cruise control at about 70mph, I set the cruise control and the RPM gauge was just over 2,000 and the tach was fluctuating up and down about 1/16 of an inch. I been reading alot of forums and what I got out of them is it maybe pointing me to a misfire maybe the coil packs? Plugs?It's not something major like a transmission rebuilt.
View 6 Replies
My 99 f450 7.3 runs bad on first start of day. I checked the codes 3 codes p0475, p0470 and p1247. Now here is what I tried I plugged it in over night and it will start and run as should the next morning with out side temp 47. Drove the truck late yesterday evening didn't plug up tried it this morning with a outside temp of 47 truck starts but missing and like of power. My problem seems to be temp related. Will low boost pressure cause this problem what do I need to do?
View 4 Replies
Ok AC wasn't working took it to a mechanic told me the the compressor was missing a clutch he recommended i put a new compressor. Is it possible just to put a new clutch in it and if so do i have to remove the compressor to put the clutch on it.
View 14 Replies
One day after my mechanic replaced the heater core my truck started to misfire after the motor warms up and is under load. No codes and nothing pops up when hooked up to o a scanner. It's been cold in the morning and when I start it up it runs like a top. But after it warms up it start to miss a little, then it gradually gets worse especially when under a load at higher speeds. I thought it was a vacuum hose or something got left unplugged.
View 7 Replies
