Ford Super Duty (1999-2016) :: Grumbling Sound When Under A Load
50 V10... How to tell if the grumbling sound when under a load is the posi plates? If so, how to replace them.
View 8 RepliesFord Super Duty (1999-2016) :: 2008 - Overheating Under Load
I have a 2008 powerstroke. Dpf and egr have been fully deleted. SCT tuner seems great and have had no issues since installed 6 months ago. I recently hooked up to my camper and headed up a mountain pass. As soon as I started uphill the engine overheated. I allowed it to cool and tried again with the same result. Eventually had to unhook and have another 6.4 (this one being a 2010) pull the trailer the rest of the way. Haven't had any heating issues since unhooking.
View 7 RepliesFord Super Duty (1999-2016) :: F250 - Skipping / Surging Under Load
I have a 99 f250 that seems like it has a bad coil, under a load it starts surging or bumping ( like it has in the past and I found a bad coil), I went through and unplugged each coil one by one while idling, couldn't find a bad one, so I bought a new coil and went through and rotated the coils, nothing worked, no check engine lights on.
View 9 RepliesFord Super Duty (1999-2016) :: Vibration When Starting Out In First Gear Under Load?
I have begun to notice a vibration when I am in first gear starting out with a bit of a load. The vibration goes away as I gain speed and the load reduces. None at any of the higher gears. If I take off real easy and allow the truck to gain speed without pushing it, the vibration does not exist. The truck is the one outlined in my signature. It is equipped with a 3 speed auto with overdrive. I am thinking this could be a U-Joint that might be starting to go out.
View 9 RepliesFord Super Duty (1999-2016) :: F250 - Whistling Turbo Under Load
Just bought a 1999 7.3 f250 w/71000 miles and took it to a diesel guy and under load he said that the whistling was normal..is this correct?
View 3 RepliesFord Super Duty (1999-2016) :: 2003 F250 5.4 - Starts Cutting Out When Under Load
About 20 miles into it, and it starts cutting out on me under load, over about 1/4 throttle. I baby it a ways further, and park at a wal-mart. Idles fine, but once again, after 1/4 runs like crap, acts like it's back firing through the intake spit and sputtering. Have the wife come pick me up since I was heading to work. Decided to shut it off, and restart, and it acts like its never had a problem.
Was messing with it today, and let it warm up in the driveway. Once it got hot, same story good 1/4 throttle, past that, not so much. Shut it off, started it back up and drove it to see if there's any codes at vatozone. Drove good (laying into the throttle) for about 2-3 minutes, back to same behavior. Hooked up code reader, no current codes, and no historic codes. Although I did notice (actually since I bought the truck) that the check engine light never comes on, even at initial start up. Looking at my spare cluster, it's an l.e.d. So no bulb out I guess unless the led is bad. Truck has around 130,000 miles on it. Everything is stock.
I'm leaning toward a fuel pump, a clogged cat, or a fuel pump relay or cutoff switch problem.. It doesn't have any other issues than that, and has been a good truck for the 10k miles I've owned it... 2003 F250 5.4...
Ford Super Duty (1999-2016) :: 2001 - No Power Under Load Or Full Throttle
This has just started this past weekend out of no where.I went to accelerate up a hill and when it got to around 2500 rpms it just starts acting like a rev limiter kicks in.When i let off throttle it smooths out and runs fine, seems anytime its past quarter throttle it doesnt not want to move anywhere.If you drive normal in city conditions or on a nice flat round with barely any throttle it runs fine.I replaced the fuel filter no change, removed air filter no difference.Its actually at the shop now and they say its a transmission problem, my opinion i disagree fluid is up, no burning smell, and shifts fine under normal (slow) driving. 2001 Super duty 5.4 triton....
View 14 RepliesFord Super Duty (1999-2016) :: Transmission Rattle At Low RPM Especially In Lower Gears Under Load
This is an early 99 f250 powerstroke 6spd manual 4wd, is it common or normal to hear a lot of transmission rattle at low rpm especially in lower gears under a load. Starting off from a dead stop it sounds awful until about 1500 rpm where it clears up (or load is reduced). I'm hoping it's just the power pulses going through splined shafts, gears, etc.
210k on the truck, just changed every fluid in it.
I've been a honda owner and mechanic for all of my driving years where shifting at 8500 rpm is common and now I'm having a hard time learning what this thing likes, rpm ranges to avoid, ect; even shifting I find difficult. At least you can heel toe with the pedal arrangement...
Ford Super Duty (1999-2016) :: F550 - Uneven Load On Rear Suspension
I have a new to me 1999 f550 w/ 7.3 and I have installed an aluminum service body with a crane on the passenger side bins. The crane itself weights about 650lbs plus the steel frame it is mounted on (superstructure in the aluminum service body). I'm concerned about the uneven load on the rear suspension. It does sag slightly to the passenger side - guessing 1" - I will measure tomorrow.
1) Should I be concerned?
2) What can I do to correct it? (without just adding weight to counter balance it).
Ford Super Duty (1999-2016) :: 2001 F250 - Slight Bucking Under Load
I have a 2001 Ford F-250 5.4L V8. 117,000 miles. The problem I have been relentlessly trying to diagnose is a slight bucking that occurs under load when the truck is in overdrive. When the truck bumps up to higher RPM's it is fine but when it is around 1500-1700 RPMs on the highway it does a small buck like I'm hitting a bump in the road. I know there are many threads on this but none of them have gotten me any closer to a resolution. It also seems to have a bit of power loss when accelerating. Things I have done so far.
-Spark plugs and COP replaced about 1000 miles ago
-New fuel filter
-Cleaned MAF sensor
-Cleaned throttle body
-New PCV
-Seafoam treatment in gas and through brake booster.
Ford Super Duty (1999-2016) :: 2002 F350 - Ticking Noise Under Load
I was having a ticking problem with the engine under load so I went ahead and did my manifold gaskets. I had a new 5.4 put in my 02 f350 last winter, and at that time I also installed gibson shorty headers. The tech had to plug the egr port with a pipe plug. But any ways, I pulled the headers last month and I used Percy's aluminum header gaskets. I also took the time to wire wheel all of the flanges and the mating surfaces. The one on the ball and socket flange was leaking on the passenger side, so I permanently sealed it with some 1800* epoxy.
The leak seemingly went away for a week or so, but it has returned. I sprayed down all of the mating surfaces with soapy water, but I can't find the leak. It only happens when accelerating or when i downshift to go uphill. So, at my wits end, I went to try and retorque my spark plugs. I've done half of them so far. Haven't driven it yet, but i was curious as to others thoughts on the subject. This leak cannot be heard at idle, nor at any RPM while in park or neutral. It is only apparent when driving. Definitely sounds like an exhaust leak to me.
Ford Super Duty (1999-2016) :: Vibration Mostly Noticeable While Under A Load Like Climbing A Hill
My current 08 duty was bought with what I believe to be a procomp 6" lift modified to an 8" lift. The 100 mile drive home after buying the truck showed a tiny "hop" in the rear. I ditched the 37s for some new 35s. Still a tiny hop, mostly noticeable while under a load like climbing a hill. I pulled the rear driveshaft and had it fully rebuilt with a new carrier bearing as well. Still gots the hop? The truck has a carrier bearing drop bracket but I think it may be insufficient for the lift.
The rear driveshaft still has a slight bend in the middle of where the two driveshaft pieces connect. Are the 2 piece driveshafts on your 8" lifted trucks sitting straight with each other or do they have this bend as well?? I am thinking if I get a bigger drop bracket it may cure this slight hop I have? Lots of lifted trucks where I live but they are dam near all shortbox with 1 piece rear shafts so I haven't been able to find one to compare. By the way, my truck also has pro comp rear traction bars..
Ford Super Duty (1999-2016) :: Engine Blows Out Smoke When Pulling Load?
Truck blows smoke like a blown NASCAR engine occasionally when pulling heavy load....pull over, cool off and resume driving. Its as if it never happened. All fluid levels are in range and truck drives fine minus load. My last f350 5.4 did same thing at about 200k miles. My local ford dealer tells me I'm the only guy on earth this Has happened to.
View 8 RepliesFord Super Duty (1999-2016) :: F350 RPMs Surges When Going Uphill With A Load
1999 F350 7.3 Super Duty surges when going uphill with a load. The only time we drive it is when towing the horse trailer - also has a camper on.
The truck doesn't physically surge, just the RPM gauge goes up and down and along with it a humming noise.
Also, What conditions should I engage the towing button on the end of the gear shift? I've heard several answers. Should it be engaged when towing or off?
Ford Super Duty (1999-2016) :: Stutter And Stalling Over 50 MPH When Hot
Turns out I have a loose injector head. The electrical body on top of the injector has separated from the bottom half of the injector. I do not know which injector it is or what side it is on. I know this is what happened because I found the head of the screw in my oil when I changed my oil for good measure and found the nut stuck to the oil plug.
2004.5 F250 SD XLT 4dr 6.0L
CAI, 4" Straight exhaust
EGR Delete, 6.4 Injector pump
Coolant filtration system.
New injectors al around
New ICP, New IPR, New Oil Cooler.
Recently Bulletproofed on ARP head studs, and the stock Head gasket,
New injector harness and FICM from DieselTech Ron
SCT tuner, running innovative diesel tunes. EGT Sensor
37x13.5r18 nitto trail grrappleers
No, I do not have a bad injector [Or I guess I do!!. This explains why it was testing ok. but still acting like a bad injector] , or a bad ICP. The Head is not leaking nor is the potentiometer [TPS] or CPS bad. All of these things have been replaced. Even the injector harness has been replaced. The only thing I have not done is remove the valve cover and making sure all the injectors are tight.
I recently had a contribution error on cylinder 8. Hence the extensive ends I went to above. The new harness and FICM connectors fixed that part of the problem, but apparently the bucking and stalling were not related to that.
No codes are coming up. I'm running an SCT tuner with Innovative Diesel's Extreme Street tune. 4" strait pipe, S&B CAI, 6.4l Injection pump, bulletproofed with ARP head studs, new oil cooler, egr delete, coolant filtration, EGT sensor, SCT tuner, etc etc. Everything but larger injectors. [was coming next]
The truck runs perfect, actually better than perfect after the harness, TPS repair, UNTIL I REACH OVER 60 MPH. At 60+ it starts bucking until i get below 45-50, then I can get back up to speed but no faster than 60. If I let off it real fast while bucking, it stalls.
Fuel PSI issue? The injection PSI isnt affected. Pulse width, normal.
I commute... [At 60 mph lately...] Sounds like I have a loose injector wire under the valve cover.
Ford Super Duty (1999-2016) :: 2015 F350 - Takeoff Vibration Or Shudder Under Load
My 2015 F-350 Super Duty has a noticeable vibration between 5 and 15 mph when accelerating with my 5th wheel. The 5th wheel is heavy--around 14000 pounds. The pin weight is heavy--around 3000 pounds. The Owner's Manual says on page 191 "When driving with a trailer or payload, a slight vibration or shudder may be present due to the increased payload weight..." (This was brought to my attention by my dealer.)
Seeing the thousands of F-250 and F-350 Fords pulling 5th wheels out there on the road, I wonder how many have this "slight vibration or shudder" and what they have done about it.
Ford Super Duty (1999-2016) :: 2008 F250 - Vibration When Accelerating From A Stop And Under Load
My F250 6.4, 3.73 Crew Cab Short bed vibrates when accelerating from a stop with my 5th wheel on. The 5th wheel weighs 12K. It is a medium to high frequency vibration that is felt throughout the entire truck. It continues through the shift into 2nd (TorqueShift Tranny). The harder you accelerate the more you feel it.
It does not occur if truck is unloaded and you accelerate at full throttle. Is this normal or should I get it looked at?
Ford Super Duty (1999-2016) :: Trans Fluid Leak After Pulling Heavy Load
I have a 2000 SD F250, gasser, auto. Last week I pulled a heavy load and developed a tranny fluid leak. The fluid appears to be coming from what looks like a freeze plug on the bottom of the casing forward of the (torque converter?) pan . Is that plug easily replaced by a DYIer. Small leak. 150K on the motor. First time it has leaked. Heaviest load I've pulled.
View 2 RepliesFord Super Duty (1999-2016) :: Running Rough / Sputtering When Under Load - Replacing Plugs Only?
My '99 was running rough - coughing/spitting/sputtering when under a load - especially at lower idle/rpms and going up inclines.
Brought to mechanic and he put it on "the scope" which told him the #1 pack was bad. Replaced. Got it back and it ran better, but, then went back to the coughing/sputtering.
Replaced the spark plugs - OEM Motorcrafts. Seemed perfect for a wee bit, now I notice an occasional cough/spit but all in all not bad.
Curious: was it foolish to not replace ALL coil packs at time of plugs or is it ...acceptable to do just the plugs and then come back and do packs if needed.