Strange Vibration/grinding when Driving

[steelo25]

Originally Posted by Grippy

Mine had this grinding type issue, turned out being the pinion bearing in the front diff.
Take out your front driveshaft and see if noise disappears, could also be a joint on the front shaft as they grind a bit once they've shit themselves

Sent from under my Grand Cherokee

I hope not as I replaced whole front axle early in the year BUT with a 2nd hand one from Jeep Recyclers which have a 360 day warranty.

[skipperau]

Originally Posted by steelo25

Pulling up at lights slowly it'll grab then soften a bit repeatedly, not all the time though. It stopped doing this when I put the new disc's in about 15000k's ago & have only noticed it whilst in Perth and traffic lights.

If you had a 99, or 00 with Teves calipers I’d say you’ve got warped disks from heat, but you have an 02 don’t you? You still may have warped disks but the chances are smaller. Do you get a pulsing through the brake pedal at the same frequency as it grabs?

I changed from Teves to Akebono at the same time as installing drilled and slotted rotors and they are noisy, I don’t mind though. It depends on the pads too, sintered or ceramic pads make more noise than organic pads.


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[Smakked]

SOunds like warped rotors mine done the same till i replaced them. Mine is an 02 aswell

[steelo25]

Originally Posted by skipperau

Lots of potential reasons, yes, low oil in the T/C, front or rear diffs could give you noises like that but the fact that the noise stops as soon as you touch the brakes and starts again when you release them suggests that it is the brakes. Loose calipers or pad flutter could cause that grinding sound. How much pad do you have left?


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Found that the transfer box was dryish, as couldn't touch any oil with little finger, so topped it up and dry grind and noise were gone. So it seems I'm up for a new seal as could see were oil had sprayed up onto bottom of floor.

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[steelo25]

Originally Posted by skipperau

Lots of potential reasons, yes, low oil in the T/C, front or rear diffs could give you noises like that but the fact that the noise stops as soon as you touch the brakes and starts again when you release them suggests that it is the brakes. Loose calipers or pad flutter could cause that grinding sound. How much pad do you have left?


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Oh forgot to say that pads are fine, had them checked by 4wd place in Collie WA.

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[steelo25]

Think I found what the noise was/is, after having lift done it started doing it again so back up on the hoist it went. Turns out the rear cv boot on the front driveshaft is stuffed, so getting a new one this PM.
The guys at Collie tyres and exhaust are squeezing me in even though they are busy as before Xmas.

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[JeanLuke]

Originally Posted by steelo25

Think I found what the noise was/is, after having lift done it started doing it again so back up on the hoist it went. Turns out the rear cv boot on the front driveshaft is stuffed, so getting a new one this PM.
The guys at Collie tyres and exhaust are squeezing me in even though they are busy as before Xmas.

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Good outcome? So was the oil spray actually grease from the cv joint?

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