Ford Super Duty (1999-2016) :: Buck Or Chug At Like Quarter Throttle While Accelerating
Jul 16, 2016
So running into an issue with boost numbers. Factory gauge reads between 20-30lbs on throttle, but I have a SCT x4 and it only reads 3lbs and at idle it only reads .25-.89 somewhere around that range. Are these numbers accurate?
Also, it has developed a sort of buck or chug at like quarter throttle while accelerating, it's sluggish leaving stop signs etc. and it sounds like the waste gate or blow off it holding on even after I let off of the throttle.
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I have a 2006PSD 6.0. At about 60-70mph my truck will start to buck/jitter if i give about 5-10 percent throttle. It only happens at these speeds and i tried all sorts of fixes so far. Also there are no codes. Truck starts and idles great. At more than 10 percent throttle at 60mph, it acts normal. My current fix is just drive normally at 80mph. I also see talks about the possibility of the Turbo vanes being stuck, but wouldn't that happen at other speeds also?
Oil Change,
Fuel filter change
EOT and ECT within 8 degrees
FICM Change with Atlas 40
EGR Replacement (Unplugging and driving didnt change it.)
Replaced IPR valve
Turbo cleaned at 90k (Currently 140k)
Visual check of exhaust system and up pipes and no leak
Current mods
Fabtech 6" Lift
FICM Repair.com with Atlas 40
Blue Spring
Coolant Filter
Edge CTS
4wd ESOF hose kit
SS Brake Lines
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My 07 has developed a steering gear issue.....it suddenly developed about a quarter to a half turn of slop......mechanic checked the front end and found everything to be tight and right so......I ordered a Redhead rebuilt box and will replace it upon it's arrival. My question is How often do these boxes go bad and if and when they do is it at all safe to drive the vehicle with that much play? I have to drive it about 15 miles to get to my mechanic ( far too cold for me to do it at home) and I also plow a couple of yards commercially and will need to use it there in the event of a snow storm.
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2004 f250 6.0 4x4 no throttle at all, no cel, idles and runs just fine just no throttle, had a diesel mechanic look at it and he couldn't pull any codes, where to start, checked all wiring, checked connections, changed the EBP sensor and tube (read that was a fix multiple times) no change
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I have a 2015 SD with only 4100 miles on it. This has happened to me twice. Both times, traveling slowly at idle or just above. Anyway, tried to give it a little gas, and -----nothing. Lightly pumped the throttle a couple of quick times and back on line. The motor didn't die, but there was no response to the throttle at all. The first time, I thought maybe it was something I did. Then it doesn't happen for a month and a half and then again, in heavy traffic in the rain. Haven't had my first service yet, and you can bet I'll tell them about it. Almost felt like a two-stroke that had loaded up?
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So I have a 2016 6.7L love it but it has this vibration at 65 mph that is worse when accelerating up a hill. It feels like an out of balance wheel but I have had them balanced 3 times. road forced 2 times. My dealer replaced the driveline also. I did a test with 400 lbs of concrete bags in the bed and it was vibration free. It almost is like the pinion angle is off.
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I have a 06 f350 6.0. I'm losing hear at times. My temp gauge is right in the middle like always. As soon as I let off he throttle or come to a stop the heat turns cold and blows out cold air!
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So my '99 F350 4x4 is making a clunking sound and there is a distinct jolt in the truck while this is occurring.
Symptoms: From a stop while accelerating, there is a distinct jolt and clunk. The best way I can describe the feeling is like something isn't tightened down all the way so there is a split second while inertia is generated and the "looseness" catches up to the acceleration.
When stopping, the clunk and jolt is generated when the truck comes to a complete stop. When the truck rebounds backwards a bit because of the suspension pulls it backwards after stopping, you will hear the clunk again.
I replaced the ball joints a week ago an a wheel hub bearing on the right side. I don't recall this before these repairs, but it may have been making this noise. I was more focused on the grinding from the wheel bearing so I may not have noticed the clunk and jolt then.
Where I should start looking for the problem?
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Truck is a stock 2001 f250 7.3 with 205,000 miles. When accelerating or braking from about 40-60mph it starts to shake a little bit. When braking it shakes a lot more from 60 down to 40. But the faster you speed up the less it shakes when taking off. Looked at everything underneath is tight, and it has stock a stock steering stabilizer. Would a new stabilizer fix this you think?
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I have an issue with my 6.0 that no one can figure out. It has been happening for about 3 years. After accelerating hard, motor will rev out like it just popped out of gear. It is still in drive and the edge cts says 4th gear usually. I have to let off the pedal and coast a bit and everything "sync's" up again and works fine. It can happen from a hard launch from a light or get on the freeway. I recently put an ATS transmission in because I figured solenoids were beginning to fail. Still does it. I am running innovative tunes with sct tuner. It had a Suncoast billet flex plate and ATS 5 star converter. I run Amsoil fluid, it is clean, red, and at the proper level. Truck has almost 80k miles. Also 37" tires and 4.88 gears. It has not done it while towing our 35' toyhauler, but I am easy on the pedal when I tow. I recently checked the transfer case and changed fluid to Amsoil. The old fluid looked good.
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So lately I have noticed that my 99 F-250 has a bit of a "bump" while accelerating. Think of it as accelerating with a trailer and something is loose on the hitch, making a sort of bump or thump. I talked to the guy at the parts store and he said to put it in neutral and wiggle the driveshaft up and down, side to side.
When I did that it moved up and down, but not side to side, but I'm not sure if that's because it's just positioned that way or what. The wobble was coming from the slip yoke back by the rear diff. Is this something I should be concerned about? Also, I have an ext. cab and short box, 1 piece driveshaft.
Here's a video (a very crappy video at that), not sure if it gets enough info through or not but hopefully you kinda get how much play is in there.
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The truck is a 2012 f250 6.2 flex fuel from alberta canada. This isn't the first tranny form out there that I've heard do this. Tranny seems fine shifts all right just a whine while accelerating.
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F250 5.4L have had a new fuel pump installed and new spark plugs (one blew out). When accelerating, or at a stop i get a kinda hesitation. It did it when I first bought the truck but put correct size tires on it and it went away. What it may be? I don't have a check engine light or anything and at cruise speed no problem--it's just when a slight load is put on the engine?
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I have a 1999 F 250. When I accelerate my AC from the vents changes to the defrost. Other than that it works great and is ice cold. Why it's doing this.
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The other day I was driving to work and I noticed my truck wasn't accelerating right and the transmission wasn't shifting into high gear. Its almost like the truck went into neutral around 2000 rpm. What the issue could be? I really don't want to replace my transmission if I don't have to.
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I have a 2015 F250 with a 6.2L and want to clean my throttle body. I have done several before on other vehicles but, just figured I would ask before I just jump in there. Cleaning throttle body on their 6.2L?
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Read about and want to clean my throttle body. Why have to remove it from the truck ? 2009 f-250 5.4 .....
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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....
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Took delivery of my 2015 F250 in June with 2WD and the 6.2 gas engine. What I thought to be a slow throttle response seems to be more of a quick shifting transmission according to two different dealerships. My 6 speed automatic has already shifted to 4th gear at only 25-30 MPH. My Dodge Hemi I sold never had shifts as quick as this and I think it's to quick. My question is....is there a way to change these shift points so I get more speed before it shifts into the higher gears?
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My friend has a F250. He was getting terrible mileage and the mechanic he took it to replaced the intake gaskets. After that the mileage went to 12 and he was happy. Now its down to 6-8, just highway. It seems to me the throttle response is terrible compared to my dad's 01 V10. And it sounds terrible. Exhaust manifolds aren't leaking that I see.
I've got AE and have hooked it up, but I'm really not very familiar with these trucks. I don't get any codes that would relate to anything. Had one trans sensor code but that was about it. Key on engine running test didn't say anything.
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I bought the 2005 F250 6.0 Turbo Diesel with 67,000 miles on it last March. It has given me gave me absolutely no problems until now. In the last 2 weeks I have had it plugged in when it was below 32 degrees outside. Otherwise, I just remote started it every morning and let it run for 20 minutes before I left. In the last 2 weeks, I have noticed the same problem whether it is morning, afternoon, or evening and it happens at different times. I will be at a standstill at a stop light, stop sign, or parked in my driveway when this occurs. Sometimes, and like I said, "sometimes", it will hesitate when I give it throttle. It will quickly respond after maybe a second, but the hesitation is still there. It only does this on occasion!
I work for a Lucas Oil distributor, so in the winter I ran the "extreme diesel conditioner" through it with a tank of diesel about every other week. I also used the fuel-injector cleaner at every fill up. On "ONE" occasion, and like I said, "ONE" occasion, when it hesitated at a stoplight, I looked in the rear view mirror, and noticed a short burst of white smoke, and then it took off. It has not done that since. I took the EGR off and cleaned it and it seemed okay until 2 days later, then the same hesitation came back, but like I said, at times!
I replaced the air filter and since then I have done nothing. I am now being told to check the coolant level in the resevoir. When I un-screwed the cap the cap, there was pressure in there and the fluid was about 1/4 inch low from the line. I was also told to check the filter on top of the block, but I have not gotten that far. Ford says it is the EGR cooler system! I have "NO" check engine lights!
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