I saw an earlier posting about vibration or resonance on the 99 SuperDuty 4X2 SC SWB V10. Apparently it occurs between 2000 and 2500 rpm. Anyone else experiencing it? Has anyone found out what it is and how to fix it?

Thanks

 

>I saw an earlier posting about vibration
>or resonance on the 99 SuperDuty
>4X2 SC SWB V10. Apparently it
>occurs between 2000 and 2500 rpm.
>Anyone else experiencing it? Has anyone
>found out what it is and
>how to fix it?
>Thanks

 

Sorry about the blank post - Better read the FAQ! Anyway back to vibrations.

My truck is the same and I too noticed vibration in this rpm range from the moment I got my truck a couple of months ago. Vibrations occur at two very narrow rpm bands. One at 2100 and then again at 2350. I haven't noticed any significant vibrations at any other rpm other than at idle when the AC is cycling in and out. This vibration occurs whether in drive cruising down the road with the AT shifting through the gears as the rpm passes through these two points or in neutral. But the vib seems more pronounced in drive when the engine is under slight load. I noticed at <a href="http://www.truckworld.com/Truck-Tests/99-F-Series/f-series.html">http://www.truckworld.com/Truck-Tests/99-F-Series/f-series.html</a> (scroll down to "The New Triton V-10") they mention a "balance shaft" which is supposed to cancel out any vibration. If this vib is normal, it sure doesnt work as well as I think it should. The dealer test drove it and acknowledges the vibration but doesn't know what to do about it. I have been in touch with another regular on this site and has given some suggestions on how to isolate the problem. The following are his responses:

The engine vibration: some questions; Stick or automatic? Will it
> vibrate in park or neutral at those speeds? Or only in gear driving?
> What kind of fuel mileage are you getting?
> Try and "powerbrake" the engine (left foot FIRMLY on brake, right foot
> slowly depressing accelerator); does it vibrate badly at any rpm above
> idle, don't exceed 1700, and don't do it for long or the trans will
> overheat.
> The plug problem has shown up with many of the fleet operators I deal
> with, they don't like to go back and "futz" with dealers schedules.
> It always seems to be the back plugs that are getting damaged.
> If.....it isn't from the plugs and the engine is firing on all 10, it's
> time to go deeper...
> For Automatics and manuals:
> remove the accessory drive belt and run it for SHORT periods to see if
> it goes away. First put a new belt on, I have seen defective
> serpentine belts cause vibrations and noise. No change? reinstall
> original belt.
> Check all accessories for uneven operation, imbalance.
> For auto only: remove torque converter drain access plug (if its still
> there) and look for any pieces of metal there, a weight may have flown
> off the converter/flexplate. Possible out of balance front pump
> (although highly unlikely, it would have leaked by now)
> For manual: possible out of balance pressure plate, disc or flywheel,
> this is harder to find. If you depress the clutch, and rev it, is there
> no vibration? If not, disc or input shaft on trans messed up. Maybe
> missing pilot bearing.
> If so, possible flywheel.
> For all: If all seems ok, broken/separated/mis-assembled damper pulley
> on front of motor.
> Lastly: Internal engine imbalance due to improper machining of any
> reciprocating part, crank, cam, rod, piston. REAL pain to fix, and I
> have seen this, not usually on Ford. VERY common on GM.
>
> UGH! my hands hurt now, I hope I have answered the questions you have>
> had. If I didn't write me back, and I'll try again.
>
> talk to you later


>>I saw an earlier posting about vibration
>>or resonance on the 99 SuperDuty
>>4X2 SC SWB V10. Apparently it
>>occurs between 2000 and 2500 rpm.
>>Anyone else experiencing it? Has anyone
>>found out what it is and
>>how to fix it?
>>Thanks

>

 

Thanks for the response. I was hopeing someone had found and easy fix, oh well. We have under 200 miles on the V10 and we noticed it from the beginning. Have to think they saw it at the factory also, but who knows. It is just distracting at this point. The engine runs so smoothly except for this limited range, going to be a hard one to find though. Would be nice if someone replaced their exhaust and it went away, we would know where to look.

Going to drive it for a couple of weeks and see if we can identify anything. Have talked to the dealer about it and they are willing to work on it, so I will probably end up there. Going to keep my ears open and see if I can find anything first though.

Again, thanks.

 

I to have the same problem I have had the dealer try different exhaust pipe combinations and nothing I want them to duell exhast it but have to go through the red tape I hope that would fix it .I can here it through the bottom of the pasenger side floor boards where the pipes join together under neath.
Hopfully the problem gets fixed soon the noise is really annoying.
I have 99 sd v10 stick shift

 

Would be interesting if they do put on a dual exhaust, that would at least tell us it is resonance in the exhaust system. If we could identify it, we could fix it.

It is starting to sound like a "system design" problem rather than isolated assembly problem however.

 

I've got a vibration/hum that can be felt in the floorboards of my '99 F350 4x4 crew cab swb. The hum is there whenever the truck is moving. They say it is from the exhaust harmonics and the don't know how to fix it. If anybody knows of a fix please post it here.

 

>I've got a vibration/hum that can be felt in the floorboards of my '99 F350 4x4 crew cab swb. The hum is there whenever the truck is moving. They say it is from the exhaust harmonics and the don't know how to fix it. If anybody knows of a fix please post it here.<


One way to address a sheet metal harmonics problem is to change the mass of the sheet metal. This is normally done with an asphaltic dampener applied to the sheet metal.

Get some of the high-end stereo acoustic dampener and pull the floor covering back and apply it to the floor pan in the problem area. You should see some factory material already there. Add a layer of the material and see if it helped. Another way would be to insulate the area of the floor pan from the exhaust.

Will

 

Thanks for the info Will, but being that this truck is new I believe Ford should take care of it.
Dan

 

I have this same problem on a 99 F250 4X4 CC SWB V10 auto. This problem has existed since new and still exists at 12K miles. I've had the dealer work on it 5 times with no success. I contacted the Ford Customer Assistance Center (1-800-392-3673 must have VIN#). They responded that "your dealer will contact you when a fix becomes available" and their attitude was "don't call us - we'll call you". I am very close to contacting them with "Lemon Law" paperwork.

 

the vibration problem on my 1999 F-250SD crew cab 4x4 5.4L 4.10LSD was the rear drive shaft after the dealer changed it and the bracket, the vibration was gone

 

>the vibration problem on my 1999 F-250SD
>crew cab 4x4 5.4L
>4.10LSD was the rear drive
>shaft after the dealer
>changed it and the bracket, the
>vibration was gone

What were the symtoms on your vibrations?

 

>I saw an earlier posting about vibration
>or resonance on the 99 SuperDuty
>4X2 SC SWB V10. Apparently it
>occurs between 2000 and 2500 rpm.
>Anyone else experiencing it? Has anyone
>found out what it is and
>how to fix it?
>Thanks


OK - Here's the hot poop

Resonance/Vibration reference TSB 97-15-24

2000-2500rpm resonance can be fixed by inspecting/tightening exhaust hangars, Engine Mounts & trans mounts and ensure proper alignment. If that doesn't fix it the dealer will order and install dampners P/N Identified in TSB 97-15-24. (They must have had these problems before the SD era)

Shudder in Driveline
Reference Oasis Database #'s 11844 & 11845

Trucks that shudder under moderate to hard acceleration (towing) may be due to large drive line angle. This condition is normal and NOT detrimental to the operation of the truck - but improvements can be made.

1. Check center bearing support bracket to make sure it is the right bracket PN 4831

2. check to see if it is perpendicular to the "drive line" and it should not be twisted or cocked to one side - not aligned necessarily perpendicular to the truck frame. etc

3. If customer uses vehicle loaded for less thatn 50% of the time. Shim center bearing down using P/N EOTZ-4A209-A to lower .75"

4. If unacceptable level of shudder is still present & the vehicl is a XL 4X2 142/156/158 WB or XL 4X4 156/158 WB Model Replace Drive Shaft with one specified for the same application XLT model.


I hope this eases some of your concerns - I know it does mine. It looks like a design issue - something that can be worked and according to Ford Corporate not a servicability issue.


Best Regard
Toby

 

I just dropped my truck off at the dealer for them to work on the vibration problem again. My dealer claims that I am the only person (in the world according to him) that has filed a complaint with Ford about a vibration problem in the 99SD. Since there is only one person complaining, they do not consider it a problem and therefore are not working a "fix". If you are having a vibration problem, please call the Ford CAC (Customer Assistance Center 800-392-3673) and formally file a complaint. I would also like to know if anyone has already contacted the CAC with this problem.

 

I gave the dealer a copy of the email ref'ing the TSB and he said they would look into it. The TSB doesn't ref the SD however. We will put a call into Customer Assistance, for reference.

The problem only seems to effect the V10 SWB SD's. Must be something about the length, etc. The longer we have it the less we notice it however. As smooth as it runs, except for the narrow band just about 2000 rpm, their isn't much not to like. Got to get a copy of the TSB and see the part numbers. Couldn't find it on the board.