Infernal Squeaking from under the chassis

Does your Mitsubishi L300 make a strange noise? Need wheel alignment specs?
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ynwa
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Infernal Squeaking from under the chassis

Post by ynwa » Thu Mar 14, 2019 9:21 am

I hope someone out there might know this one. It's a head scratcher.

There is a squeaking that comes from under the chassis. It sounds like a rubber bushing moving inside a carrier or something. It's not constant but squeals like rubbing on movement, like over bumps, turning the wheels at a stand still and general side to side rocking of the van.

I've sprayed every possible bushing that I can find under the van like trans mounts and such, but still the DeliLlama screams like a tortured banshee.

Anyone come across this? I can make it squeal by rocking the van side to side.

Cheers! :)
1991 L300 TD Low Roof

helibrian
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Infernal Squeaking from under the chassis

Post by helibrian » Thu Mar 14, 2019 9:18 pm

Have a look at the muffler.

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deskinthewoods
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Infernal Squeaking from under the chassis

Post by deskinthewoods » Fri Mar 15, 2019 11:35 am

I had a similar sound a few weeks ago. Got out my trust grease gun and hit all the nipples (especially the ones on the front suspension). No more squeak!

*** NOTE: just do ONE squeeze of the grease gun per nipple or you can blow out the rubber covers!!! ***

NippleGreasing.jpg
NippleGreasing.jpg (106.4 KiB) Viewed 78 times

It takes a bit of sleuthing to find some of them, all caked in road grime, but a good wire brush cleans them up pretty well.

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ynwa
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Vehicle: L300 Starwagon TD
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Infernal Squeaking from under the chassis

Post by ynwa » Sat Mar 16, 2019 3:27 pm

deskinthewoods wrote:
Fri Mar 15, 2019 11:35 am
I had a similar sound a few weeks ago. Got out my trust grease gun and hit all the nipples (especially the ones on the front suspension). No more squeak!

*** NOTE: just do ONE squeeze of the grease gun per nipple or you can blow out the rubber covers!!! ***


NippleGreasing.jpg


It takes a bit of sleuthing to find some of them, all caked in road grime, but a good wire brush cleans them up pretty well.
Dang, of course! :) Thanks! Poor BJ's don't have nipples. :(
1991 L300 TD Low Roof

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Growlerbearnz
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Infernal Squeaking from under the chassis

Post by Growlerbearnz » Sat Mar 16, 2019 10:59 pm

The usual culprits for suspension squeaks are the anti-roll bar bushes. Also check your subframe mounting nuts- it's unlikely to be them (they usually cause a clunk) but if they are loose you want to find it now.
Nothing says "poor workmanship" more than wrinkles in the duct tape.

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