Ford Super Duty (1999-2016) :: Transmission Rattle At Low RPM Especially In Lower Gears Under Load
Jun 15, 2014
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...
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I have a 1999 F-250 4X4 7.3 lit Diesel engine. My problem is my transmission will go into reverse great no problem but it won't go forward. I have no problem rebuilding the transmission if that's what it needs, I just want to make sure there isn't a electrical issue from the PCM first?
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I was driving on the highway last night when it was like somebody dropped my transmission into neutral. I was cruising at 50mph slight hill. There was no noise or any thing. Now I have nothing.
It's a 2005 f350 4x4 automatic
I can only assume I'll be needing a new transmission but I am hopeful of a small problem...
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Was driving my 2000 Ford F-350 stopped transmission would not move no more there was no noises no nothing just stopped pulling no gears nothing only Park works...
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My buddy's 2001 7.3L F350 has had 3 transmissions. Rebuilt and used. Once the new trans is in he goes like 15 miles and then is starts shifting hard and grinding gears. What this could be?
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My current truck is an early 99 F250, 7.3L diesel, CC 4x4(manual shift transaxle) auto transmission. It is basically stock, with the exception of a hutch/harpoon and a new fuel pump over the winter, an AIS intake. I have a magnaflow exhaust kit in the garage along with bellowed up pipes but have not installed them yet.
Here is my issue. Several times over the last 2 years, the truck will pull a load, or long trip, and with complete randomness, the engine will feel like it has shut off, there is usually a jerk or two, and the truck "restarts" itself and continues on like nothing happened. Last year we drove 1.5 hrs from home with the boat in tow, driving up Snoqualmie pass, and it died completely, no restart. We had to be towed home. It started right up at the shop, so no real clue of what happened.
When this happened, I had the fuel system checked for pressure and replaced the engine fuel filter, and all was good. I also had the Cam position sensor replaced/updated to the new grey sensor. Shortly after, I had the minor jerk/stall occur again, so I replaced the fuel pump and did the hutch/harpoon mod to ensure there wasn't an intermittent fuel pressure loss and that the in tank filters were not clogged.
Last weekend, i pulled my boat to Oregon, and the same "hiccup" happened as I was about 1.5 hrs into my trip. it was fine after that the rest of the 4 hr trip. We also drove back the same route and had no problems.
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50 V10... How to tell if the grumbling sound when under a load is the posi plates? If so, how to replace them.
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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.
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I have a 1999 F450 that was bought new as a cab and chassis. The truck belonged to my dad who passed away two years ago and now I have it. I am wondering if it has 4.30 or 4.88 gears. The rear end is huge! It has an aluminum cover with cooling fins on it, not sure if they both had that or not. I looked online and I think it said all cab and chassis had 4.88?
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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.
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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.
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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?
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I need to do both lower ball joints. is there a write up or process to do it? do I have to remove the whole hub assembly/knuckle thing or can I do it with all that stuff in place?
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I've got a 2003 350 7.3, with the zf6, approx 225000. I've been chasing a vibration that can be felt in the whole truck for quite a while. Feels like a wheel bearing danm near shot. But after replacing both wheel bearings and making over the whole front end it didn't go away. So I replaced the clutch and throw out bearing cause it was getting bad anyway. The vi ration is still there so I checked the harmonic balancer and it was bad so I replaced that. Still no dice. I know that it's coming from the trans, you can hear it in when jacked up and running in gear. Shifts fine in all gears. But the vibration/ clunking is there in all gears and it's getting bad. It feels like a bearing going out. Could it be input shaft bearing or pilot?
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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...
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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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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).
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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.
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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.
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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..
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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.
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