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Vibration at speed 

 

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 Post subject: Vibration at speed
Posted: Mon May 14, 2007 6:57 pm 
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Hey,
My crappy EF is making bad vibrations and rumbling noises when I get up to highway speeds. It's through the whole car and the gear stick, not the steering wheel (which is often the case).

It's only there when I'm decelerating or cruising, and disappears completely when accelerating.

It also only appears at about 90km/h and gradually gets worse and it's very bad at about 110-120km/h.

I'm thinking diff? I dunno...

Cheers,
Dave.

 

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Posted: Tue May 15, 2007 2:00 pm 
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my ef has a similar situation, all my 4 wheels/tyres need a balance, cause when i put my stockies on, the vibration is gone.
my diff bearings are starting to make noise too.

 

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Posted: Tue May 15, 2007 2:05 pm 
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Does it go away when you accelerate?

 

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Posted: Tue May 15, 2007 2:07 pm 
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mostly yes, as soon as i back off or sit on a certain speed its there again. it's mainly 120+ km/h though.

 

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Posted: Tue May 15, 2007 2:11 pm 
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Very interesting. I'll go get my wheels balanced and see if it helps.
One of my tyres has a flat-spot too, so I'm sure that doesn't help.

I didn't think that vibration from something like this would go away with acceleration - weird hey.

 

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Posted: Tue May 15, 2007 2:13 pm 
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yeh, as soon as i put the 17's back on, the vibration came back.

 

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Posted: Tue May 15, 2007 2:34 pm 
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My guess is either uni joint or the little balance weight has come of your tailshaft happened to me i took off the shaft turned 180 degrees all good now,dead wheel bearings will make noise no matter what accel or decel
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Posted: Tue May 15, 2007 7:59 pm 
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When mine done that, it was because the car was too low...i had ultra lows in it. Turned out to be the diff pinion angle. To fix, either raise, or get an el diff with upper control arm adjustments.

 

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Posted: Tue May 15, 2007 8:07 pm 
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Hey yeah, that's something I hadn't really though of.
It does have superlows, and the guards just sit over the tyres at the back.

But then again it's always been that low, I can't remember when the problem started I've been ignoring it that long!

Far out, could be a million things lol :(

 

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Posted: Tue May 15, 2007 8:31 pm 
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yeah man I agree with XR6 EF, my new ef had the same problem. My front uni was shot, replaced it and everything is great. When u come down a hill with the clutch in or in neutral can u hear a knock or feel one? that was the biggest hint in mine, there should have been rollers in the 4 joints but I had none it was hitting metal on metal :( not good!,you tend to drop the shaft at that stage especially if u like to go out and play.
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Posted: Tue May 15, 2007 9:04 pm 
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Hope it's the uni's actually. Nice easy fix.

Thanks for the help everyone!

 

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Posted: Wed May 16, 2007 12:10 am 
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I have the exact same problem. its my pinion end bearing in the diff

 

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