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1) Grinding sound. 2) wheel bearing noise?

NRB

By NRB,
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NRB Rising Star

NRB

Posted
Posted

PROBLEM 1

When my R32 GTR is low in the rev range, say 1500-1800rpm (in a gear that is too high for fast acceleration) and I try to accellerate, I have a grinding sound (much like metal-on-metal) that seems to be eminating from under the gearstick. As the revs pass 2000rpm, the sound disappears. I've also noticed a bit of play in the gearstick in that I can move it up and down approx 10mm.

The brake pads have been changed recently, and rub against the discs at all times, but I don't think it's the source of the sound.

PROBLEM 2

I have what appears to be wheel bearing noise coming from the front left. The noise isn't present when the car is moving slowly, but once road speed increases to 50-60kph the sound becomes quite loud. It's a sound that is similar to a wheel bearing on its way out, and one I can only describe as a "whoop whoop whoop" sound that increases in frequency as the speed increases. At 100kph the sound is present bu much reduced. ie. the sound is at its maximum at about 60kph.

I thought it may be wheel bearing, or perhaps diff noise, so I had it on a hoist today, only to find there was no play in the wheel at all. I ran the car up to 70kph while on the hoist and the sound wasn't present at all, so it seems as though load is required.

As I stated, I thought it may also be diff noise, but if I put the car in neutral and coast the sound is still present. In fact, I think the only thing that changes the noise is braking. When I brake I believe the sound is louder.

Any ideas guys? I simply want to sort this car out - I've only just imported and got it registered so I want it mechanically sound!

Cheers,

Nick

  • 2 weeks later...
Guest sky|ine

Guest sky|ine

Posted
Posted

I have exactly the same problem. Loud "woop woop woop" at 60 but quieter at 100. I can feel the woop thru the steering wheel too. Took it to my mechanic today and he said it was front wheel bearings. Gettin em done this week hopefully. Let ya know how it goes..... ;)

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