nothing bad, just would like to know! :yes:

Nope they have a solid flywheel. They have a separate balance shaft for damping because they are only 3 cylinder.

Graham

Nope they have a solid flywheel. They have a separate balance shaft for damping because they are only 3 cylinder.

Graham

Does the 1.9 td has a dual mass fly wheel ,Honest John seems not to like them , he seems to think they are prone to failure.

IIRC all the 1.9tdi engines in the fabia MK1 & 2 have DMF's. Failures are quite common, but a lot depends on driving style. I've seen DMF's last a few thousand miles, and others last well into the 100K mark.

Graham

A garage I use for my MOTs love DMFs ... they are replacing them a lot and there seems to be no pattern as to why they are failing. Its a costly item to replace too... Im sure over time they will improve?

I am on my 4th 1.9pd and despite taking all of them except one well past 70k (Two of them 120k), I have had no issues. The one that did fail was mapped to hell and back and had quite a lot of track time....

I am on my 4th 1.9pd and despite taking all of them except one well past 70k (Two of them 120k), I have had no issues. The one that did fail was mapped to hell and back and had quite a lot of track time....

Decron...do you know what actually fails on them?

Decron...do you know what actually fails on them?

I would imagine its spring failure due to fatigue. Springs arent really suitable for energy storage/transfer at the rate and frequency that DMFs employ considering the size of those springs.

Early DMFs used to use 2 flywheels bonded by some kind of rubber. Needless to say the rubber bond used to give way for similar reasons plus temperature/environmental reasons.

Have they been modified over time to correct known faults, or are manufacturers fitting parts knowing that they are liable to premature failure.would this be a case of supplying goods that are not of merchantable quality ?

Edited 14 February, 201016 yr by mellyboy

Have they been modified over time to correct known faults, or are manufacturers fitting parts knowing that they are liable to premature failure.would this be a case of supplying goods that are not of merchantable quality ?

Not really a fault, though, is it? That is like saying clutches are made faulty as they will wear out. They can be ruined in a few hours on a track! If you need a heavy duty battery, you buy one, you dont buy a weak one to run huge amps, dvd's etc! BRAKES WEAR OUT THE MORE YOU USE THEM... YOU FIT BETTER ONES IF YOU WANT BETTER PERFORMANCE ETC... sEE THE PICTURE FORMING HERE?

on the MGR 2.0d and on the 1.9Multijet, it seems that a rule of thumb of 2 clutches changed for every DMF. Fords seem to need them much more often.

It is, in order to keep a smooth drive, a new serviceable item. Another tax on the motorist in result of technological progress...

They have become more common due to tougher emissions regs from the EU. To get the CO2 down manufactures are having to use thinner long life type oils in the engines, this in turn causes more vibrations transferred to the car. As a result manufacturers like LUK & Sachs have developed DMF's to reduce them. They not perfect by a long way, but should improve in years to come.

Graham

Phew!... I couldn't find the answer to this.... Thanks for relieving me and my wallet!.. :-)