Apparently nothing wrong

[Rowley010]

My 2008 D5 V50 started doing an odd thing on Sunday. Only when going up a very steep hill where we live when I put my foot down, just as the turbo kicks in the car started juddering, feeling low on power, and vibrations coming from under the car. Only on this hill, no other hill, or not when accelerating on level ground.

Described exactly what I've described there to garage (local not Volvo) and they've looked today, brought back saying there's nothing wrong can only find a bit of wear on the driveshaft.

Where did this leave me? As the other day there clearly was something wrong,

I'm reluctant to book in with Volvo though and getting charged thousands for something!

[Yobbo]

Originally Posted by Rowley010

My 2008 D5 V50 started doing an odd thing on Sunday. Only when going up a very steep hill where we live when I put my foot down, just as the turbo kicks in the car started juddering, feeling low on power, and vibrations coming from under the car. Only on this hill, no other hill, or not when accelerating on level ground.

Described exactly what I've described there to garage (local not Volvo) and they've looked today, brought back saying there's nothing wrong can only find a bit of wear on the driveshaft.

Where did this leave me? As the other day there clearly was something wrong,

I'm reluctant to book in with Volvo though and getting charged thousands for something!

What RPMs were you at? If you were in a high gear and stuck your foot down with low RPMS < 2-2.5k it sounds very much to me like the DMF throwing a wobbler - AVOID AT ALL COSTS.

Sounds like the introduction of huuuuge amounts of torque, you're better off downshifting than letting this happen too often.

As if the DMF goes, it's advised to replace the clutch and vice versa.
With labour, you're looking at £1000-£1200!

My car is also a V50 D5.

Hope this helps!

[Rowley010]

Can go up the hill in 4th in the D5, it's steep and in a 1.6 petrol you definitely need 2nd to go up. But if you plant your foot when in 4th with the D5 it flies up no problem. When it was doing this the other day I dropped it to 3rd and it kept doing it.

Why would the garage say it's fine though if it was the DMF? They are very good and have used them for years and totally trust them. Is an issue with the DMF something that they just wouldn't have found?

[Yobbo]

Originally Posted by Rowley010

Can go up the hill in 4th in the D5, it's steep and in a 1.6 petrol you definitely need 2nd to go up. But if you plant your foot when in 4th with the D5 it flies up no problem. When it was doing this the other day I dropped it to 3rd and it kept doing it.

Why would the garage say it's fine though if it was the DMF? They are very good and have used them for years and totally trust them. Is an issue with the DMF something that they just wouldn't have found?

Okay, so if it's doing it under a shift-down with relatively high RPMs it could still be the DMF having to take the brunt of the torque required to get up the hill.
The car might still fly up it even without clutch slip...
Other than getting the DMF off the gearbox and inspecting the tolerance, I think the only other way you could test them is under load - which is obviously bad.
You'd know if it's totally buggered as it would be juddering away while idling over... But it could be on it's way out.

Does this problem still occur when you're not driving on a incline?
Say, trying to boost from 40mph in 6th?

If your car has been re-mapped, ragged/regularly boosted from low RPMs, on high mileage it's possible the DMF will be towards the end of it's lifespan. These are all variables of course and may not apply...

If the car otherwise drives perfectly fine with no judder under normal driving circumstances than I'm buggered for an answer!

[Rowley010]

No there's no problem when not on an incline. No problem either on a "normal" incline. Literally only done it on this very steep hill where we live where you need to give it the beans. A petrol struggles up without revving it hard.

The car is a 2008 with almost 140,000 on the clock. I've had it for 4 years and done nearly half that milage in that time. Wouldn't say it's been ragged but potentially accelerating from low rpm yes.

But no, no judder vibrations in any normal driving! And garage say nothing wrong hmmmmmm

[Whyman]

Check your levels.

I once had a Granada than had a gearbox wine when going up a steep hill. Turned out to be low oil level in the gearbox but only on a very steep hill with all of the oil in the back of the gearbox.

[Clan]

Originally Posted by Rowley010

No there's no problem when not on an incline. No problem either on a "normal" incline. Literally only done it on this very steep hill where we live where you need to give it the beans. A petrol struggles up without revving it hard.

The car is a 2008 with almost 140,000 on the clock. I've had it for 4 years and done nearly half that milage in that time. Wouldn't say it's been ragged but potentially accelerating from low rpm yes.

But no, no judder vibrations in any normal driving! And garage say nothing wrong hmmmmmm

you need to be able to reproduce it on a certain hill , take the mechanic out and show him ...

[Yobbo]

It's an odd one! But my money is on the DMF.

Next time you visit the hill try dropping to second or even first if possible, I would expect the judder to be far less pronounced than in 3rd.

In any case, avoid low RPM boosting as it's nothing but bad news for DMFs.