Jon mabbitt
New member
I have a clonking noise every now and then it sounds like its comming fro me the rear of my multipla can any one help me out as to what it could be.
Thanks
Jon
Thanks
Jon
General Clonking
- Thread starter Jon mabbitt
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General Clonking
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Are you sure its from the rear?
As most of the time is the roll bar, drop links, top mounts, wishbones or even track rod ends!
As most of the time is the roll bar, drop links, top mounts, wishbones or even track rod ends!
If it's definitely from the rear, most likely culprit is one of the Sub-frame mountings (bushes).
Front pair seem to go more often than the rears.
Jack the car up at the back, but not anywhere on the suspension or sub-frame, and see if the sub-frame can be moved away from he chassis, lever it with a large screwdriver or flat bar.
If it's really loose, it may move down under it's own weight, so best to get someone else to do the jacking while you watch each side, don't stick your head under there though.
Front pair seem to go more often than the rears.
Jack the car up at the back, but not anywhere on the suspension or sub-frame, and see if the sub-frame can be moved away from he chassis, lever it with a large screwdriver or flat bar.
If it's really loose, it may move down under it's own weight, so best to get someone else to do the jacking while you watch each side, don't stick your head under there though.
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Jon mabbitt
New member
Ok thanks I'll try jacking the back up tommrow. The noise is deffenatly from the rear as I've had clonking noises from the front before so I no it's from the rear as it only happens when the rear wheels go over things
Hi
I also have a cloncking on the offside rear. It sounds sometimes like everything is ready for dropping off! Then it stops and I don't hear it for a while I have jacked it up and everything looks ok although the sub frame on that side looks a bit closer to the body than the other one, not being a trained mechanic I don't really know what a knackered mounting bush looks like??
Any one help?
Malc
I also have a cloncking on the offside rear. It sounds sometimes like everything is ready for dropping off! Then it stops and I don't hear it for a while I have jacked it up and everything looks ok although the sub frame on that side looks a bit closer to the body than the other one, not being a trained mechanic I don't really know what a knackered mounting bush looks like??
Any one help?
Malc
They look a little dry Slobo, they could do with some lube I reckon 
Anyway, this is what your Subframe looks like . . .
The rear bushes (1) rarely seem to go, I think that's because they're mostly only subjected to upwards loading, whereas the fronts (not numbered) get a constant up and down pounding from bumps, dips and braking.
The bushes are basically rubber blocks, with a metal sheath and a metal core.
The sheath is what's pressed into the bores on the Sub-frame, and the core is where the mounting bolts (8 & 12) clamps them to the chassis.
There are also large cup washers (not shown) fitted under the bolt heads, that are larger than the bores in the Sub-frame, so that even if the bushes completely fall apart, the Sub-frame can't physically detach from the chassis.
If you jack the car up at the back, not on the trailing arms or the Sub-frame, then the Sub-frame is hanging on the bushes.
There should be no relative movement between the Sub-frame and the Chassis, other than the mm or so due to the flexibility of the Rubber.
You can get a flat bar or large screwdriver in-between the Chassis and Sub-frame, and try to lever the Sub-frame downwards.
Any movement, either the bush moving in the Sub-frame, or the bush and Sub-frame moving together in relation to the Chassis, means a new bush is needed.
Anyway, this is what your Subframe looks like . . .
The rear bushes (1) rarely seem to go, I think that's because they're mostly only subjected to upwards loading, whereas the fronts (not numbered) get a constant up and down pounding from bumps, dips and braking.
The bushes are basically rubber blocks, with a metal sheath and a metal core.
The sheath is what's pressed into the bores on the Sub-frame, and the core is where the mounting bolts (8 & 12) clamps them to the chassis.
There are also large cup washers (not shown) fitted under the bolt heads, that are larger than the bores in the Sub-frame, so that even if the bushes completely fall apart, the Sub-frame can't physically detach from the chassis.
If you jack the car up at the back, not on the trailing arms or the Sub-frame, then the Sub-frame is hanging on the bushes.
There should be no relative movement between the Sub-frame and the Chassis, other than the mm or so due to the flexibility of the Rubber.
You can get a flat bar or large screwdriver in-between the Chassis and Sub-frame, and try to lever the Sub-frame downwards.
Any movement, either the bush moving in the Sub-frame, or the bush and Sub-frame moving together in relation to the Chassis, means a new bush is needed.
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Plenty of info on here as to what Bushes fit (from other models and manufacturers).
I'm not sure if Fiat stock them, they never used to, your only option was a complete Sub-frame.
Sub-frame Bushes 1
Sub-frame Bushes 2
Sub-frame Bushes 3
Sub-frame Bushes 4
I'm not sure if Fiat stock them, they never used to, your only option was a complete Sub-frame.
Sub-frame Bushes 1
Sub-frame Bushes 2
Sub-frame Bushes 3
Sub-frame Bushes 4
Like I mentioned, I'd be surprised if the rear ones are shot, have you checked?
Should be able to buy just the fronts from a few sources.
Edit; Just had a look at their site.
Says for the front ones . . . " *** will need slight modification " . . . but doesn't say what.
Probably need turning down by a few thou on the outside, that's the norm for non-fiat Bushes, usually Vauxhall items.
You'll need a Lathe, or need to know someone that has one.
I'd contact the seller and get that clarified before you order.
Should be able to buy just the fronts from a few sources.
Edit; Just had a look at their site.
Says for the front ones . . . " *** will need slight modification " . . . but doesn't say what.
Probably need turning down by a few thou on the outside, that's the norm for non-fiat Bushes, usually Vauxhall items.
You'll need a Lathe, or need to know someone that has one.
I'd contact the seller and get that clarified before you order.
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rear ones are ok and i think the front ones are ok to.
The nose is just on one side, the passenger side.
Had a screw driver in between the Chassis and Sub-frame and i am sure they are ok,
Had a look at the wheel and it seems to be out of line,and when i go around corners i get the nose to. any help on this please.
thanks
Mel
The nose is just on one side, the passenger side.
Had a screw driver in between the Chassis and Sub-frame and i am sure they are ok,
Had a look at the wheel and it seems to be out of line,and when i go around corners i get the nose to. any help on this please.
thanks
Mel
I sometimes get the nose as well.
Not sure what you mean by the 'Nose' comment?
If your rear wheels are 'leaning' inwards at the top, that's your trailing arm (11 on diagram) Bearings knackered (often incorrectly called Bushes, they're Taper-Roller Bearings).
T-A Bearings 1
T-A Bearings 2
T-A Bearings 3
If your rear wheels are 'leaning' inwards at the top, that's your trailing arm (11 on diagram) Bearings knackered (often incorrectly called Bushes, they're Taper-Roller Bearings).
T-A Bearings 1
T-A Bearings 2
T-A Bearings 3
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