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| xcabbi |
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TyLeR3397 wrote: I'm guessing the pitch of the humming increases slightly as you speed up and it only happens in 4th? Hence why I suggested converter lockup issues. Mine used to do that whenever I felt my converter lock. Either 4th on flat road or 3rd on a steepish hill. |
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| Pakrat |
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Mines a 5 speed.
Had to say it's the same noise tho. |
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| ef_falcon_95 |
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mine does the same thing at 90-100 km, its like a humming noise, sounds like tyres
_________________ El XR6 Turbo |
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| Shano.T |
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I'd rule out the extension housing bush as I have had mine replaced within the last few months and the sound was present before and after having it done with no change in the sound what so ever...
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| Landau510 |
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mine does exacty the same thing, Ive always put it down to tyre harmonics. I changed all tyres, the pitch changed but it was the same noise.....so I got a better stereo.
_________________ Lets just pretend I give a s**t and leave it at that..... |
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| TyLeR3397 |
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Posts: 465 Joined: 22nd Jun 2011 |
it's not the tyres..
 I'm 100% sure it's something to do with the box.
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| Gab1 |
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Could be a few things, here's a few things I can think of:
Loose flywheel/flexplate Loose torque converter bolts Faulty torque converter Input shaft support bearing (Inside the gearbox, entire gearbox requires dissasembly to fix) Output shaft support bearing (Inside the gearbox, entire gearbox requires dissasembly to fix) Broken govenor (I'd expect other issues with the transmission if so though) Really badly worn sun gear (again I'd expect other issues with the transmission) Extension housing bush (are you sure they didnt just change the seal in there?) Universal joints Tailshaft out of balance Worn bearings in the diff? (I dont know alot about diffs someone might have more ideas there) Bent axle (unlikely, but you never know) Loose rear disc rotor (make sure they both have the big phillips screws in them and arent just sitting there) Dodgy tyre Rear axle bearings Really badly worn control arm bushes Engine mount Gearbox mount Bent stub axles that's about all I can think of. Gab EDIT: Does your speedo work properley? |
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| creeture3 |
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One question: is the car lowered? If so, the problem is tailshaft out of alignment.
Other than that, I still say tailshaft, and REALLY hard to get rid of |
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| Shano.T |
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yes the speedo works properly and when compared to the speed my gps says i'm doing it is correct to the exact kilometer... and no my car isn't lowered, it still has all of the factory ford gear in it...
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| Landau510 |
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try altering your tyre pressure see if you get a change in the noise
_________________ Lets just pretend I give a s**t and leave it at that..... |
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| Shano.T |
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Landau510 wrote: try altering your tyre pressure see if you get a change in the noise I'll give that a go... what do you suggest trying? I have factory 15" hub cap rims and run 36psi |
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| Landau510 |
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I dropped mine to 32 today and the noise all bar went...I cold only just hear it if I was driving beside a wall and no other cars around....i had 36 and im running nexens.
_________________ Lets just pretend I give a s**t and leave it at that..... |
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| mreb |
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Mine is the same 90 kph and it hums drones and vibrates but only after i lowered it so i just avoid that speed if i can .was told its the part on the diff where the tailshaft bolts to whatever thats called .
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| Landau510 |
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Like everyone has said beofre in this thread a hum or noise could be made by just about anything. Shano has said his ride is pretty much stock as far as drive line goes and lets face it changing tyre pressure costs you nothing to do....
If that doesnt fix it then he can move on to the next
_________________ Lets just pretend I give a s**t and leave it at that..... |
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| Shano.T |
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Landau510 wrote: Like everyone has said beofre in this thread a hum or noise could be made by just about anything. Shano has said his ride is pretty much stock as far as drive line goes and lets face it changing tyre pressure costs you nothing to do.... If that doesnt fix it then he can move on to the next I dropped the tire pressures back to 32psi which did bugger all unfortunately =\ but I appreciate your suggestion! |
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