Ford Super Duty (1999-2016) :: 2008 V10 - Consistent Metallic Buzz On Moderate Acceleration?
Sep 17, 2015
Over the past couple of weeks my truck has developed a pretty consistent metallic buzz on light/moderate acceleration. At first I thought it was a heat shield rattling, but I've been under it a dozen times and can't find anything loose to make the metallic buzz that I'm hearing... I can pound on several places in the exhaust system with my palm and it seems solid/connected everywhere. V10 truck??
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So I just had the 10k service done on my GTI and after I got it back everything seemed fine. That is, until under moderate acceleration there was a weird buzz or vibration that came on around 2800-3400rpm coming from what I think is the engine bay or near the firewall on the passenger side. I was able to repeat the issue multiple times and it showed up every time. However, with the car at a stop and in neutral and revving it I can't make the problem occur only when under load, in gear, and traveling at speed. If I could describe it, it sounds like a playing card against bicycle spokes (for those of us who did that when we were kids)..
Anyways, I drove it straight back to the dealer and at that point had closed their service shop but they did do the right thing and give me a loaner car until they can look at it on Monday. How the heck could this pop up after a 10k service? What all do they do besides oil change, tire rotation, and fluid inspection?
I did pop the hood and one of the side of the fuel rail sounded louder than the other, I suspected that maybe one injector is starting to go and it seemed like an isolated noise but perhaps its not an injector at all. Nonetheless it seems this is a non-related issue..
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Have been having issues with my truck starting for the last few months. Happens cold or hot. When I try to crank all I hear is a buzz and the starter trying to insert, but it doesn't. Just a tap. Has been happening the last few months here and there. Have always started after 1-2 minutes of trying. Yesterday went for a 60 mile drive and car didn't start after I parked. Tried for a good hour and decided to leave it and it fix the next day. In the morning, the trunk started on the first crank.
Drove home and parked. Tried to restart and nothing. Went to work and came back at night and nothing. I was just going to take out starter and have it tested and replace if needed. Also, will replace the starter solenoid. Have replace both of these the last 2 years with parts from Napa Auto Parts. Have a lifetime warranty for starter. How often do these parts need to be replaced? What my issues are or what else should I replace for preventative maintenance?
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I drained the transmission fluid on my 2000 f250. I measured the fluid at about 6 quarts. I refilled with 6 quarts. I drove until the engine was hot and checked the fluid while running in park. Each time I check it I get a different reading on the dipstick. I wipe off the dipstick each time but sometimes I pull it out and it reads low. The next try it shows about 1/2 inch over full on the dipstick. Can't get two consistent readings. Is it harmful if it is a little over or under full?
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I have this bucking a jerking when pulling my Sundowner LQ horse trailer, primarily in the 40-50 mph range. I can let off throttle and it stops but resumes unless I feather the throttle.... 2008 f 350, 4WD, 6.4, 48k miles....
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New 2012 SD - Is it normal? Going over road bumps, etc causes a metallic sound, kind of like you had some loose metal in the bed bounding around...except it does it when the bed is empty. At first, I thought spare tire...but it is tight. Springs making noise? My father's 2011 F-150 does not make any noise.
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Got some snow tonight and was driving home from work around 35-40 mph in 4x4. You can tell that everything is engaged by the feeling and noise. Just not sure if this is abnormal. When letting off the throttle there's an extra metallic rubbing sound that goes with the drivetrain speed. Not sure if I'm just hearing the driveshaft from being in 4x4 of if something is up?
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I have a 2004 F350 Crew Cab DRW 4WD 6.0L.
The front drive shaft is making a high pitched metallic squeal while the truck is in motion. I thought it might be the universal joints but after lubricating the joints, I can still hear the squeal and it sounds like it is coming from inside the drive shaft. I also hear this squeal when I spin the drive shaft by hand.
I have quite a few questions about these drive shafts:
- What would cause a squeal from within the drive shaft?
- Are there any replaceable parts or do I have to get a new drive shaft?
- How do I identify the correct drive shaft part for my truck? Seems like there are a LOT of different models on the web.
- Are any of the aftermarket drive shafts any good? Any to avoid?
- Is this a DIY job or will I need to take it in to the shop?
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I am in the process of replacing the front hub seals so my ESOF works again. I tested both front hubs with a mityvac and neither one of them holds any vacuum at all. All the lines are good, and the pump and solenoid seem to be working fine.
I have the driver's side apart and I have a couple of questions.
What's a good source for the vacuum seal? I've checked rockauto, riff raff, and diesel o-rings. Diesel o-rings has it, but the description says it's only for 2003+ Excursions so I didn't order it.
There is no yellow o-ring anywhere on the hub. I assume that someone forgot to put this o-ring back in and this is why I don't have ESOF? I guess what I really want to know is that there isn't some 2000-specific thing where there's no o-ring, right?
After I got the hub off, I spun it around on my workbench and it doesn't sound good at all. It makes a slight metallic grinding noise about 1/2 way around. I assume this isn't normal? AFAIK these are all original parts - but the missing o-ring means to me that someone already had it apart.
There was a lot of water intrusion and rusty colored grease but nothing was dry, the needle bearings were intact and the shaft isn't scored at all where the bearing rides. I'm hoping new seals and good cleaning and it should be good as new. And then it's off to the next side.
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So, my 2004 with its constant tick is now "Missing", but only under moderate acceleration, between 1k and 2k rpms. i.e., : When in OD and wanting to gain a few MPH, but not drop down a gear. I have noticed it in OD and in 3rd. Feels like the engine stops for a split second, several times.
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Okay here we go. 97 F250 HD with 460 and e4od.160,000 miles, MSD 8.5 Super Conductors, Mallory 6A, KNN air filter, Transmission Flushed new filter including inline and Mercon V. New Hedman Headers and Y-pipe into Cat delete stock exhaust. New front fuel pump and filter. New 38 gallon conversion rear tank and fuel pump. Air pump delete. New IAC valve. Timing set to stock. oil just changed Valvoline high mileage full synthetic, KNN oil filter , Lucas Full Synthetic oil Stabilizer, Injectors cleaned on truck with Berrymans, Entire cooling system has been thoroughly flushed. New 4 core radiator and 180 degree high-flow thermostat, new belts, new water pump, new hoses, new 13lb rad cap.
So here's the problem. It gets hot under acceleration. If I do a 0 - 80 mile per hour run the temperature gauge will go from a steady "O" reading to the high side of "R" (of course I am referring to the word displayed "NORMAL").. if I am Towing 0 - 65 mile per hour run will put the Gage to a solid "A" Reading then drop quickly once the throttle is lifted. It can idle all day long with the AC on and it will not come above the"O". I would normally think that this has caused buy a stuck thermostat however the thermostat is new and a stuck thermostat while running easy, would most likely cause the lowest temperature to be around the letter "N" on the gauge. I have no condensation coming out of the exhaust whatsoever except what is normally associated with first start up on a full exhaust system. I have no additional pressure or bubbling in the radiator. I have no foreign fluid in the radiator either from oil or transmission fluid being introduced. And I have no coolant contaminants in the oil at all which would normally indicate a head gasket or intake issues. This is definitely a concern because Towing an RV in hilly conditions will allow the gauge to climb rapidly. The bigger the hill the longer and harder the acceleration the higher the temperature will climb. I am stumped.
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Truck sat for 1 1/2 years. Changed filter and put in 15 gallons of fuel. Had maybe 1/2 gallon old fuel in tank. MAYBE. Fixed fuel line because it wasnt getting fuel and it fired right up and idles great.
Truck has no acceleration over 2500 (or so) RPMs but idles fine. This is depending on how hard you push the pedal of course.
If you drive the truck normally like a grandmother it seems to be ok. As long as you dont need a passing gear or need to accelerate more than 1/4 pedal
If you try to push the pedal to get the next higher gear it will sometimes hit the gear fine. IF you floor the truck it will totally lose acceleration. Then the truck will run like crap even slow for a good while. But then it will clear up for the low end. Then you can drive it normally. Then when I think I can test the upper end I get the same thing again.
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My Son drives a 2012 6.7, and just recently it started overheating bu only under acceleration? It runs cool while idling, and once you reach the desired speed, it cools back down, but under acceleration it overheats? We've checked the obvious (coolant etc...), but can't figure out what it would do this only under acceleration?
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On the way home today upon medium acceleration I heard a pop kinda like a backfire ......now black smoke pours out on acceleration.no much in line of power either. Hoping I haven't screwed the motor ...
6.0 ltr turbo diesel 2004 f-350 super duty crew cab 4x4 ....
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My '05 5.4 SD CCLB is running badly. 95k mikes. Plugs done 6 months ago. Acceleration is very sluggish. Sometimes uphill from a stop is almost impossible.
No CEL codes other than an intermittent coolant temp gauge that spikes but resets as soon as I shut down and restart.
When it is bogging the exhaust note changes - almost like there is a blockage. It is almost a booming sound. I would like to test to see if the cat is clogged. I have a vacuum gauge but need to find a vacuum source after the throttle body to do so. If I pull out the O2 sensors ( to allow the exhaust pressure to exit ) would the truck run badly because the O2 sensors were not functioning?
If it turns out that the converter is bad. Can I just eliminate the cats? I do not need emissions testing here in PA because the truck is so heavy. But I don't know if eliminating the cats will cause other problems.
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I drive a 2000 F250 XL Super Cab LB 2WD 7.3 Powerstroke. i drive like a grandpa. No rompin on the accelerator or anything. I was leaving the house got up to about 35mph and the truck lost acceleration. Motor still running fine. I coasted onto a side road. Put it in park, killed it, started it again and same thing. Will not go into drive at all. However will go into reverse just fine and accelerate in reverse. Desperately wanting my favorite means of transportation back!
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2016 F250SD XLT CC 4X4...13K miles... Now with it being blazing hot in Florida I have been running windows up and a/c on. Beginning to notice the truck is not accelerating the same with the a/c on as it does with the a/c off. It seems like it sluggish till it gets to a certain RPMs then you feel it kick in and somewhat take off. Is this normal?
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2003 6.0 is acting crazy again. Has new ICP, IPR, oil discharge tube, and hpop. It cranks right up but one time you crank it and all the gauges work correctly, especially the fuel gauge. The engine will idle perfect but when you accelerate it has a dead miss. May crank like that 2 to 4 times. Then you crank it and it runs like crap, and the gauges won't work, the fuel gauge goes past E and the light comes on. As long as that happens it runs terrible, but when the gauges are working it idles great but has a miss under acceleration! It was running fine, then just went nuts!
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2007 F-350 4X4 King Ranch... I have the 6.0 diesel. I am on the road to Houston, Tilden and San Antonio TX, and I am noticing a whistle on acceleration. I can change the tone by how hard I push down on the accelerator. I thought it was a radio issue and turned the radio off and got no change. Turned the a/c off, no change. Down hill or coasting, nothing.
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I have a 2002 F-250 7.3 Powerstroke 4x4. My truck has developed a "clunk" for lack of a better term when accelerating from a dead stop. It is not a shudder as it only happens once within a few seconds of depressing the accelerator and then goes away until the next time I stop moving.
It feels like either something in the drivetrain is not engaging right away, or something is releasing, like a stuck caliper or something. From the way it feels and what I've read so far about the TC/Trans, I'm assuming it is something worn in the drive-shaft/rear diff.
But it needs brakes badly (already have all new rotors & pads ready to install) so maybe a caliper is sticking when depressed and then popping loose under initial acceleration? I think this is unlikely but possible.
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I have recently developed a vacuum leak on my 2002 F-350 V-10 under the passenger side of the dash. It is only audible when I am accelerating moderately to heavily or when the truck downshifts going up a hill. None of the vehicles HVAC or ESOF functions seem to be affected by this leak from what I can tell, but it's rather annoying to listen to this loud sucking noise every time I hit the gas moderately hard such as climbing a hill or merging onto the freeway. I don't know how I could search for this leak since it only happens when I'm driving and accelerating and not at a stop. What might be going on or where I should begin my search?
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