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What would make an auto hum at 75 to 90kmh? 

 

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Posted: Mon Jul 24, 2006 4:42 pm 
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Could be the extension housing bush is worn causing the slip flange to have some movement.
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 Post subject: hummer
Posted: Thu Jul 27, 2006 12:22 pm 
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i have a EA wagon which used to humm along, but stopped when coasting. Then the diff broke up into many little pieces. A second hand diff solved the humming problem. No more noise.
Regards Sprayball

 

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Posted: Thu Jul 27, 2006 1:20 pm 
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my dash vibrates badly when pulling up to a stop or to slow down .. only sometimes.... but it also happens if i go down in gears (AUTO) drives me bananas!
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Posted: Fri Jul 28, 2006 2:18 am 
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The internals of my diff are 6mths-old. The noise is the same before the bad diff, and after. A little quieter though because the diff is in better shape.
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Posted: Mon Jul 31, 2006 8:58 pm 
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just wondering if u had your box looked at yet i've got the same sounding problem only its getting worse and fast

 

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Posted: Tue Aug 01, 2006 7:02 am 
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When I come back from Melbourne I'll get it fixed. I might even give Ford $100.00 dollars to drive it for an opinion.
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Posted: Tue Aug 01, 2006 9:01 pm 
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Sounds like a worn a***.

If it was doing it in all gears then I would say bearings. But becasue it goes away in 3rd witch is 1:1 the gears are not moving against each other and the whole a*** and clutch pack rotates as one.

Do you get noise in 1st and 2nd?

 

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Posted: Tue Aug 01, 2006 9:34 pm 
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i have had extention housing problems before, and thats different to what you describe here. my ef does vibrate when it goes into o'd at around 60 k's cruising in econ, and if i go up an incline and there is a bit of load, there is often some vibration that comes on under acceleration but goes away if it shifts down or i let off the accelerator.
when was the last time you serviced the transmission by the way? sometimes the fluid gets pretty filthy and performance goes down with it. my gearbox has however done 332,000k's :o

 

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Posted: Wed Aug 02, 2006 2:42 am 
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I only have the noise in 4th gear. Only between 75 and 90kmh. Same sound a manual box makes when stalling speed because the car is moving too slow for the high gear that's selected. Never happens in 1st, 2nd or 3rd gear. And the auto was serviced fairly recently, although will do another one when I get it fixed.
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Posted: Wed Aug 02, 2006 10:35 pm 
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like its labouring in gear hey. mine does that, has a bit of a winge then shifts down. i have a manual to stick in, so i am thinking about pulling the auto apart to have a look see inside it and maybe find what the problem was.

 

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