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Discussion Starter #1
Hi folks!

I think my DMF is about dead.

I have only had my 2003 147 JTD 8v for a week or so, but it is now juddering very badly fron idle to 2k when trying to pull away.

The clutch does not slip when driving, even under full boost in 3rd, 4th, 5th etc.

Does it sound like a DMF problem to you guys?

If so, I am going to crack on, pull the box and get it all changed.
 

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It sounds like the clutch has just worn.


My Fiat Coupe (which had no DMF) developed a judder when hot, even though the clutch wasn't slipping.
 

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Discussion Starter #7
The pedal vibrates a bit, but most of the vibration is coming through the whole car, and its quite bad.
The biting point of the clutch seems to vary a little, which is odd.

It has done 112K with full alfa service history, and it does not look like its ever had a clutch or flywheel after looking through all the invoices.

Its been getting worse over the last 3 days (160 miles).

I don't mind changing the clutch and flywheel, but I want to make sure its not a daft common problem with something else that's a quarter of the price.
 

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that seems a lot of extra expense though if there's nothing wrong with it??
If the clutch is gone then while you are in getting that repaired you might as well change the DMF as it is in same area and saves labour cost when that goes as well, which it will
 

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I have vibration is coming through the whole car, only if i don`t add enough gas on the pedal while i relise the clutch. Maybe troggle reset will fix this.

Or the ERG valve needs clean... who knows ???
 

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Does anyone do a solid flywheel conversion for the JTD's?
We have one testing in our 147 1.9 8v courtesy car and I've just fitted one in a 1.9 16v Sportwagon, seem to work well but time will tell if it causes other problems.
 

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dmf best replaced at same time as new clutch.
Alfa specialist i got mine done at cost about 850 all in but said he would not guarantee the clutch if dmf was not done.
 

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dmf best replaced at same time as new clutch.
Alfa specialist i got mine done at cost about 850 all in but said he would not guarantee the clutch if dmf was not done.
the dmf only needs doing if its gone........my old sportwagon had 130k on it befor it needed a clutch dmf was fine so it got left alone, Dmfs dont wear out, its the springs that fail, you can tell as soon as u feel it....its sloppy, they normaly rattle so u know springs have broken

the car was still going stron 25k after with new clutch and pulled like a train :)
 

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the dmf only needs doing if its gone........my old sportwagon had 130k on it befor it needed a clutch dmf was fine so it got left alone, Dmfs dont wear out, its the springs that fail, you can tell as soon as u feel it....its sloppy, they normaly rattle so u know springs have broken

the car was still going stron 25k after with new clutch and pulled like a train :)
DMF s actually part of clutch mechanism and many independants advise to replace this when doing a clutch job .....some refuse to do the job unless its replaced
 

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We have one testing in our 147 1.9 8v courtesy car and I've just fitted one in a 1.9 16v Sportwagon, seem to work well but time will tell if it causes other problems.
Noticed a bit of gearbox chatter at idle when close to a high wall with the windows down.. Hmm...
 

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Every DMF has different angle's specified for when they need replacing. The DMF has dampers fitted that take it up to the springs, a lot of people are'nt aware of this and don't know how to check them correctly. If the DMF's damper system is ok and the face is'nt scored or warped they are fine to be reused.

I certainly would'nt recommend fitting a solid flywheel to a diesel. It cause's a lot of damage to the gearbox and drive train as well as making the car a lot less smooth and nice to drive.

I bought a Discovery TD5 that had had a solid flywheel fitted earlier this year it was awful to drive. Kept wearing out propshaft UJ's and caused vibration through the car and was jerky on light throttle pulling away in traffic etc. We have refitted a DMF and standard clutch and it is a different car to drive.
 

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The DMF damp's the oscillation's of the gear's inside the gearbox. With it removed the gears chatter against each other in the box and can be heard.
I should clarify, the 8v with solid flywheel is totally silent. Its odd that the 16v is more audible. BTW the gearbox in the 16v is a 5-speed from a 2.4 10v, not that it matters I suppose. If it doesn't cause a failure then I'll be happy with it. The 8v drives brilliantly, much better than with the DMF. The 16v doesn't drive too great at the moment, but it arrived with us with a seized 6-speed box with no oil in it, so I don't know how it ran prior. Also had to weld in a 3x15" plate to the N/S/R floor, on an 04 plate thats a bit ridiculous..
 

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Just see how they last. We have seen a lot of diesel's that have had flywheels fitted and has ended up knackering the transmission. All diesel race cars have to use DMF's or the gearboxes pack up before the end of a race. Speak to gus about it he runs 3 series diesel BMW race cars.

We fit solid light weight flywheels to high performance petrol engined cars.

Has that 147 rotted the rear of the floor out Dan or the floor to sill section of the floor?? We have seen a lot of 147's and 156's that have needed a lot of welding to the floor pan's.
 

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The 16v is a Sportwagon on an 04 plate, it rotted through the middle of the floor, it looks like the rot started where an additional plate has been added from above during production. There were four holes drilled in the floor, and an extra plate (for stiffening?) has been added from above with 4 captive threads that pass through the drilled holes and stick out underneath the car. I'd never noticed it before, so checked a few other cars in the workshop and none had it except an 04 plate saloon. So maybe its a change they brought in after the factory was shut Sept-Nov 2003. Worth keeping an eye on it on late model cars. Also the left-most two drain holes were rotted and needed small plates welding in. The 147 8v is absolutely solid, no sign of the rot at all, and its also an 04.

The clutch used in both cars is a sprung clutch rather than a solid one so that should help with keeping down vibrations. The 8v 147 is a courtesy car so it will be a good test, they always get a hard life.
 

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Talking of rust, in this months car mechanics magazine they are finishing off their Alfa 156 project.

It says at the beginning of the article "Alfa's have always had a reputation for rust, and the 156 is no exception" :(

They then proceed to weld large plates in the floorpan.


Well done Alfa, just as people started to believe that you had got the rust issues sorted, you make start making cars that are prone to rust again.

A 7 year old car that needs welding really isn't on these days, and if it wasn't for my last 156 being as rotten as a carrot I would still be driving an Alfa now.
 
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