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100 Series harmonic vibration??????

Tech Talk for Cruiser owners.

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100 Series harmonic vibration??????

Post by shifty300 »

On my '98 100 series 'Cruiser there's like a harmonic hum/vibration at 90 k's. Have swapped over trans case as advised by experts but it's still there. Found front tail shaft uni's out of alignment and as advised rotated 90 degrees to re-align. This made hum/vibration worse. Did this 2 more times and found same. Reverted tailshaft back to original alignment as this seems to create the least hum/vibration.
Has anyone encountered this problem and or have a remedy other than a match and jerry can?
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Post by scottmcguinness172 »

is it auto or manual my dads gu patrol does the same thing its auto ad the tourqe convertor was buggered
1992 Dual Cab 80 series cruiser Factory Turbo 35"mtz's 5" Lift, Rear Locker
Team Blue Dog Off Road
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vibration

Post by SIMMO84 »

take the front shaft out, lock the center diff and take it for a drive youll soon know if its it or not.
Wtb, 105 series rear tyre carrier, alloys and tyres.
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Post by 80's_delirious »

How much lift does it have?
Are the uni's good quality and in good nick?

I had similar in a lifted 80series, turned out to be cheap crap uni joints causing it.

If you have recently lifted it, worn uni joints could also be the cause.
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Post by shifty300 »

It's an auto and std height at the moment. Has full Toyota service history so I'm thinking the uni's are genuine and they felt good.
Thanks heaps for the tips. I give them a shot.
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