The Flywheel

June 28, 2006

hi all new to the site very handy and informative

just went to purchace a 2002 rav4 vx d4d and as we were taking it on the test run.it felt like the clutch went and had to get a tow back.humourous for me .embarrasing for them.the car is otherwise a minter.got a call to say it was the fly wheel and he would replace it.but i am wondering did totota upgrade the flywheels or should i expect this problem again in another 37k.any problems ive read in the forums seem to be costly.should i run a mile or bite the bullet. any comments welcome.thanks. :thumbsup:

June 28, 2006

hi all new to the site very handy and informative
just went to purchace a 2002 rav4 vx d4d and as we were taking it on the test run.it felt like the clutch went and had to get a tow back.humourous for me .embarrasing for them.the car is otherwise a minter.got a call to say it was the fly wheel and he would replace it.but i am wondering did totota upgrade the flywheels or should i expect this problem again in another 37k.any problems ive read in the forums seem to be costly.should i run a mile or bite the bullet. any comments welcome.thanks.

Interesting:-

Looks like a problem with 2002 D4D mines just gone at 48K only a gx model though however, I incurred damage to the clutch too, the garage are replacing both items under warranty and have assured me this was down to a faulty fly wheel so shouldn't happen again :unsure: Other than this no probs, I love my rav.

June 29, 2006

hi all new to the site very handy and informative
just went to purchace a 2002 rav4 vx d4d and as we were taking it on the test run.it felt like the clutch went and had to get a tow back.humourous for me .embarrasing for them.the car is otherwise a minter.got a call to say it was the fly wheel and he would replace it.but i am wondering did totota upgrade the flywheels or should i expect this problem again in another 37k.any problems ive read in the forums seem to be costly.should i run a mile or bite the bullet. any comments welcome.thanks.
Interesting:-
Looks like a problem with 2002 D4D mines just gone at 48K only a gx model though however, I incurred damage to the clutch too, the garage are replacing both items under warranty and have assured me this was down to a faulty fly wheel so shouldn't happen again Other than this no probs, I love my rav.

Go for it. If they replcae the part (which they should) make sure you get a warranty with the RAV.... :thumbsup:

I have a 2002 VX D4D best car I have owned and very comfortable......Had some minor problems at start :( :D but running very smooth now....Has done 55K now.... Need to hide keys from wife as she nicks it some times :crybaby:

Toyota's are very reliable but some models have small problems but compared to other makes very good. Came out top in surveys by JP Power and AutoExpress.......You will not be disapointed in the RAV....

GO FOR IT :thumbsup:

June 30, 2006

From another thread ( http://toyotaownersclub.com/forums/index.p...l+Mass+Flywheel )

"Sorry to hear about your predicament . Do you use the Rav for towing ? You would really expect it to last a bit more tham 36000 mls .Here is some more info I got off the web on DMF and why they fail .

Quote :

A dual mass flywheel, or DMF, is made up of a primary and secondary flywheel with a series of torsion springs and cushions. There is a friction ring located between the inner and outer flywheel that allows the 2 flywheels to slip. This feature saves the transmission from damage when torque loads exceed the vehicle rating of the transmission. The friction ring can then wear out if excessive loads are applied.

The DMF also has a center support bearing that carries the load between the inner and the outer flywheel. The leading failure of the bearing is vibration caused by misalignment of the pressure plate and the DMF dowel pins during clutch replacement. Lastly, you have the damper springs. The # 1 cause of failure is engine run-ability problems. A poor running engine, if not attended to, will change the resonant frequency of the engine, causing the engine to run in an undesirable RPM range. When this happens, it overworks the damper springs, causing premature failure.

The function of the DMF is to isolate the torsion crankshaft spikes created by high compression ratios. If you can isolate the torsion spikes, you will eliminate the possibility of damage to the transmission gear teeth. The DMF isolates the frequency below the normal engine operating rpm's during startup and shutdown

Unquote

Hope this is of some use"

Some thing to keep in mind to prevent future damage

August 4, 2006

We had a problem with my wife's car. Sounded like the exhuast was going on it, but got told it was the flywheel and would cost £1,600 to repair. Only 52k on the clock on a 2002 D-4D GX with one previous owner - the dealership.

They refused to entertain a gesture of goodwill but were willing to knock £1,600 off the price of a new RAV. We went elsewhere.

September 28, 2006

GOOD NEWS

Thanks to this forum I managed to diagnose the failure of the dual mass flywheel in our four year old 52 plate, 36000 mile D4D. Our local dealer confirmed the fault when the car was serviced and advised that the clutch and freewheel needed replacement. They also said that it would be in the order of £1500 to£1600 but would see if Toyota UK would help or bear the whole cost - given that the car was of low milage, age and that it had always been serviced by Toyota. Within a couple of days we were advised by the garage that Toyota had a recall with regards to this failure and the clutch and dual mass flywheel would be replaced free of charge.

We have today collected our RAV after the two day replacement of these parts. Toyota have fitted a revised flywheel (it has a new part number) and a new clutch - waranteed for 3 years.

The car is now notably different - smoother when pulling away, no horrible squeeling noise or grunting at max power and the engine vibration we had become used to is no longer present.