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Nasty Rattling Noises in 95XJ

Tech Talk for Jeep owners.

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Posts: 11
Joined: Wed Jul 27, 2005 11:29 pm
Location: Western Sydney

Nasty Rattling Noises in 95XJ

Post by Snapey »

Hey Everyone,

I have problem that I'm hoping you can help me with. Last weekend we took the 95XJ out to a 4WD Club fun day. It went well except for a loud and rapid knocking noise that only seemed to occur when in 4WD and accelerating hard (and possibly with the wheels turned but not sure). Given it has the OME 2" kit under it and still running standard (almost slick) tyres, do you have any idea what this might be? I have tried to get it to do the same thing on a hard road surface, but got nothing. I haven't had a chance to have a good look under it yet - just hoping for some pointers.

See you out there.

Snapey
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Post by buddha »

Where abouts was the noise comming from? front, rear?
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1994 GQ DX PATROL,chopped, DTS Turbo, 4" Dobinson lift, lockers, reduction gears, 38'' Maxxis
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Post by Wooders »

COULD be something amiss in the T/case - but Bloody hard to diagnose over the net.
test it in the various t/case possies. Maybe try and identify front/rear/mid where the noise is coming from - get someone to walk/run next to you as you try to replecate.
Cheers [url=http://www.wooders.com.au]Wooders[/url]
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PK
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Post by PK »

Have a look at rear driveshaft uni - the noise is hard to trace, but you'll know by grabbing the driveshaft and seeing if it moves.
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Post by optical »

check your passenger side engine mount...
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Post by Snapey »

Thanks folks - all good pointers and gives me some where to start. Noise is coming from front - possibly left side.
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Post by Wooders »

Also inspect the axle unis.
Cheers [url=http://www.wooders.com.au]Wooders[/url]
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Posts: 11
Joined: Wed Jul 27, 2005 11:29 pm
Location: Western Sydney

Post by Snapey »

Just to update you all on this - turns out this noise was caused by a combination of the suspension lift and a stuffed passenger side engine mount (got it in one Optical!) The suspension lift with transfer case drop tilted the engine back so that the front of the engine lifted slightly. Combine this with a stuffed passengers side engine mount and the tourque created when accelerating hard (worse when turning - probably because of the engine leaning from its own weight) and the fan moved to rub on one of the air conditioner lines.

FIX - replace engine mount (thanks to Dave at Wooders Garage for that one) and wack a decent size cable tie around the offending pipe to pull it just slightly out of the way. BINGO!!!

Thank you all for your help and suggestions.
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