DMF - Hyundai Tucson

obi604

Hi

i have a 2016 Hyundai Tucson 1.7 diesel, Manual transmission. 97,000 km. services carried out, mainly used for long journeys. etc

Yesterday, I noticed the gears a small bit sticky. But nothing major.

today carnage, driving on road and car does not feel right, revs all of a sudden so I have to pull in. Try to drive again about 90 mins later and worse. Car recovery says it’s DMF gone.

my question - let’s say it is DMF, what is the rough ballpark figure to fix this at an Indy garage? Like are we talking 200 or 1200 Euro etc.

Phil.x

2k

obi604

https://www.boards.ie/discussion/comment/120945197#Comment_120945197

Oh b0ll0x. That much 😞

obi604

My mechanic rang me and told me he rang his usual parts people and they said the car has a solid flywheel as opposed to dual mass I think

does this make sense?

BlakeS94

It's quite rare for a diesel engine to not have a DMF, a Solid flywheel would not be able to handle the vibrations as well and would be rattling down the road. I reckon that information is wrong.

obi604

https://www.boards.ie/discussion/comment/120980347#Comment_120980347

mmm, yeah, sounds a bit strange alright

my mechanic was a bit bemused too, he gave the car details and this was the part that was spat out. will have to wait and see

obi604

out of interest, is there anything to stop DMF type issues happening, like is it caused by short journeys, sitting in traffic, resting foot on clutch, driving car too hard etc etc?

or can it essentially happen no matter what you do

yoshiktk

https://www.boards.ie/discussion/comment/120980347#Comment_120980347

Autodoc shows only flywheel for that engine, not dmf. So it could be possible. Besides there's loads of solid flywheel kits for diesel engines.

Try this website.

https://hyundai.7zap.com/en/eur/

yoshiktk

Autodoc shows only flywheel for that engine, not dmf. So it could be possible. Besides there's loads of solid flywheel kits for diesel engines.

Try this website.

https://hyundai.7zap.com/en/eur/

obi604

https://www.boards.ie/discussion/comment/120980645#Comment_120980645

thanks

I am ignorant here.

Whats the difference between

DMF

Solid flywheel

https://www.boards.ie/discussion/comment/120980595#Comment_120980595

Hard acceleration and city driving is not ideal for them.

Some recommend that you hold the clutch in when you turn on or off the car.

At the end of the day its a moving part and is subject to wear.

BlakeS94

https://www.boards.ie/discussion/comment/120980595#Comment_120980595

It's an inevitable part of owning a car, but can be delayed, DMFs don't like low revs, I always try to keep revs above 1500rpm when driving. Which means changing up a gear at around 2300 rpm for my car. Takes getting used to changing higher up the revs consistently but will prolong the life of the DMF.

A DMF is made of two masses held together, hence dual mass flywheel, solid flywheel is just one piece.

There are solid flywheel kits available for diesel cars, but you will experience more vibration and it will ruin the driveability of the car. It will be the same as driving on the motorway with a knackered flywheel you can feel it through the seat.

BlakeS94

@Hellrazer may be able to clear this up, seems to be pretty knowledgeable on Hyundai's

mk7r

These have solid flywheels, not dmfs

obi604

https://www.boards.ie/discussion/comment/120981545#Comment_120981545

should the car be overly rough then due to having this solid flywheel?

is it normal for a solid flywheel to go?

Birka

https://www.boards.ie/discussion/comment/120981591#Comment_120981591

The symptoms that you describe sound more like a worn clutch. Failing DMF will have a rattle and vibration, not a slipping clutch. If a car has a DMF, the DMF is often replaced at the same time as the clutch but if it's a solid flywheel then it's just a new clutch.

Hellrazer

https://www.boards.ie/discussion/comment/120981545#Comment_120981545

1.7 is a Dual Mass - Its the same engine as the I40 / IX35 etc.

https://hyundai.7zap.com/en/eur/tucson/heurpd716/01:w5,02:1f,04:5,05:7,year:2017/en/20231d11/#23200B

1.6 is single as far as I can remember.

You can change them to single mass and honestly if it was me Id put up with the extra bit of vibration for longevity - usually they arent as bad as people think - I used to do single mass conversions for a load of taxi drivers back in the day on the I40s. Very little difference felt for me anyway but if you are used to the feel you will notice it.

mk7r

https://www.boards.ie/discussion/comment/120981922#Comment_120981922

Every Tucson and Sportage I have ever done (1.7) has had a solid flywheel, did one yesterday as a matter of fact, OEM Kia.

I wonder was there a parts bin special on which flywheel was put in

obi604

https://www.boards.ie/discussion/comment/120982947#Comment_120982947

let’s say it’s a solid flywheel in my Tucson - will that be a more or less expensive job than a dual mass? Or all the one

Hellrazer

https://www.boards.ie/discussion/comment/120982947#Comment_120982947

Ive never ever seen a solid mass flywheel ever in the 1.7 engine and even if you go to any of the parts catalogs online ie factors etc they all list dual mass. Even ebay only list conversion kits with solid flywheels. I cant find an oem one anywhere - even the part number has been the same since the i40 - 232002a810. It hasnt changed with the Tucson.

Why are you changing a solid flywheel? They never or very rarely fail. Clutch yep but even doing a clutch on a car with a solid flywheel you use the old unit??

Hellrazer

https://www.boards.ie/discussion/comment/120983114#Comment_120983114

Usually a lot cheaper for the parts - labour the same but the you wouldnt be in the position youre in - youve already been told the dmf is gone.Its a known issue on those 1.7 diesels.

At 97,000 kms a solid flywheel doesnt fail - actually solid flywheels very rarely fail.

mk7r

https://www.boards.ie/discussion/comment/120983864#Comment_120983864

It's super common for manufacturers to use the same part number for very different parts that can be interchanged, this flywheel had the Kia stamp yesterday and the clutch kit was also the original genuine 🤔

Hellrazer

https://www.boards.ie/discussion/comment/120983886#Comment_120983886

Thats mad - BTW Im not disputing you - Ive worked with Hyundai for over 15 years in the trade. Ive been in a different franchise for the last 3 years so I could be just behind the times. Its about time they fixed that engine - I probably had the techies fit 300 flywheels on that engine over my time.

obi604

https://www.boards.ie/discussion/comment/120983874#Comment_120983874

The dual mass flywheel was just a comment from the tow truck driver, just kind of a throwaway comment like ah yeah, your DMF is gone - so not based on him investigating at any lengths.

I tell this to mechanic and to potentially speed things up he has ordered a replacement and mentioned it was a solid mass flywheel (that’s what his usual parts people are telling him) My mechanic has not even started the job yet.

I have no clue if the flywheel is actually dual or solid and there seems to be conflicting information on this.

at the end of the day, I am just trying to figure out how much it will potentially cost me

THEDONWALDO

It’s more than likely that the car has a solid flywheel..best way to check is to ask a dealer to check the data card of the chassis number. From memory if the vehicle has a low power VGT engine then it is a solid flywheel. Hi power VGT = dual mass fly. Clutches and concentric hydraulic slave cylinders are very troublesome on the 1.7 dsl..

3 Owls in a Coat

Did you ever get your car repaired and can I ask what the total was?

obi604

Not repaired yet. With mechanic and he hasn’t had a chance to look yet. Will update you when I do.

have you a similar situation?

or pre emoting a future situation/repair bill 😁

3 Owls in a Coat

https://www.boards.ie/discussion/comment/120992444#Comment_120992444

I have the same possible situation. I budget for approximately €2000 car repairs each year so am glad that I got my tyres replaced last year a little ahead of schedule. It is what it is. The cost of keeping a relatively boring, normal car maintained is so much more expensive then 20 years ago.

Cos20

Hi, not disputing anyone’s info on here but I have done a good few clutches on the 1.7s, all have had solid flywheels. I phoned my local dealer today, while there are solid they have changed some under warranty but don’t change them outside warranty. Genuine concentric cylinder 41421-32300 €194.50 + vat / Genuine 2pc clutch kit 41200-32405FFF €137.00 + vat. The FFF means its modified but not sure if you’d get it at that price. Hope that helps.

obi604

I got my Hyundai fixed today, total cost was 919 Euro. This included a service also (engine oil, oil filter, air filter)

It was not the flywheel after all and my mechanic confirmed its a solid flywheel (not dual mass)

Essentially the clutch disc had broken off.

he replaced clutch kit and slave cylinder

obi604

Also to add to this, consequently got a call from Hyundai main dealer last week saying my car is due a MAJOR service, I ask what they mean by major and they say engine oil, oil filter, air filter.

I ask them the cost of this. 480 Euro. That’s some cod.

obi604

https://www.boards.ie/discussion/comment/121013075#Comment_121013075

Was just thinking about this……..as in the clutch disc just breaking.

would this be caused by any driving style etc or short journeys or resting foot on clutch too much or driving hard etc etc

or is it just a design flaw or weak design of the clutch disc

ofcork

Lads here have said hyundai seem to have weak clutches,i have 227k km on my 11 year old avensis still original clutch etc.

obi604

https://www.boards.ie/discussion/comment/121030823#Comment_121030823

so just a design flaw/weakness with Hyundai.

i.e. no matter what way you drive it or services it or or looked after it………would likely still happen