2.0 TDI Random Stutter

[Bing_IRL]

Hi Guys,

Seems that I may have a problem somewhere and need some advice. I have an A4 B7 2.0TDI (33000 miles on the clock)that gives a little stutter randomly. I can be accellerating in 2nd gear or cruising in 5th but can still feel power drop for a split second. Car drives/performs fine otherwise but every couple of days this happens & am a little worried. Any ideas?

Cheers,
Bing

 

[dunk]

could be a blocked fuel filter - mine gave intermittent stumbling / loss of power and its very cheap to do, but if you dont flush the new one full of fuel it can take 1/2 hour of cranking to get the engine to fire afterwards - i think its one thing worth paying a dealer or vag specialist garage to do

 

[Bing_IRL]

Thanks Dunk. I'll pop up to them on Monday so. That couldn't be diagnosed via the OBD before they open anything up could it? Local dealers are a bit sloppy & I prefer to keep them as far away as possible.

 

[dunk]

no if its fuel starvation then i dont think vagcom will show up anything useful

 

[Bing_IRL]

Hi Guys,

Finally got around to changing the fuel filter & set about removing the old one. This has to be one of the simplest things to do, that is if you have the right part . ****** motor factors guy gave me the wrong filter!!

Anyway, since everywhere's closed till the morning I emptied out the contents of the old filter & there isn't even one partical of dirt in it. Do you guys know if I can just stick in the old one again or will the dirt just stay inside the filter?

Cheers,

 

[347]

hi there , having simular issues with my a3 tdi

have you sorted yours out yet ?

 

[tdisportuk]

i was told it was the 'injector loom' which causes this stutter and needs to be changed after some time. Has the stutter ever happend in idle?

the engine mounts in the car are not very clever too any minor rumble, you can feel it!

 

[sticky]

ive got a tdi dsg with similar problems too!

only happens in mine when mobile
its smooth when idle

 

[JimC64]

dunno if I'm glad I came across this or not.....

I have the same thing in my 2.0 Tdi A6.
It was fine, but I've been having lots of problems with losing coolant ( see my thread in the A6 section ) and have complained repeatedly resulting in the dealer replacing the cylinder head. Whilst they were at it and as the car has covered 60k I got them to do the timing belt.
Car comes out of the garage has this stutter, usually in lower gears, say 2nd and 30mph and 3rd at maybe 35mph.....just alittle hesitation, almost barely noticeable....BUT IT IS THERE!
I've noticed watching the rev counter which previously sat at a rock steady 800rpm.....now can be steady then waver between say 750rpm and 900rpm now n again.
I've also noticed an oil leak that wasn't there before.....ITS GOING BACK..

I'll update what I find

Jim

 

[JimC64]

took the car in today.....oil leak definitely still there ( tech thinks its may be the head gasket? ).....decided to keep the car in to check properly and gave me an A4 2.0tdi (09) as a loaner.
They're gonna check the hesitation / stutter while its in and also refit the drivers side wheel well liner properly.
I'll keep you updated as to what they find and how it goes from here

Jim

 

[JimC64]

UPDATE As you know the cylinder head has been replaced under warranty around a couple of weeks ago.
I've since had an oil leak that wasn't there before which its been in for a few times and also a slight hesitation in the lower gears at around 3000rpm almost like a slight misfire which caused concern.
The cars been back in for diagnosis and just had a call to advise the following.....
They've found a a problem with the camshaft which seems to have been tearing the seal. They've already replaced the seal and found this issue as a result of that process.
They are now going to replace the cylinder head AGAIN and also the twin fuel pump I think they said....something about the oil contaminating the fuel if I remember correctly....The result is that the car will be with them for another 4-5 days or so and then hopefully all will be good.

Got an 09 plate 2.0 tdi sline avant at present - not a bad car although a little underpowered, but looking forward to getting back into my A6

As much of a pain as it is with all the toing and froing....the dealers have been pretty good as sorting the issues and communicating with me as well

 

[johnmccracken]

I have a a3 2.0 tdi b7 which has a stutter/misfire at 2800 rpm which appears occassionallly. Audi haven't been able to sort it.

 

[JimC64]

Hi all...had a few problems with my 07 A6 2.0 tid which have included cold / non start issues and loosing coolant among them.
Having taken advice I've visited the dealer many times re the low coolant issue and they've replaced the cylinderhead around a month ago. Since that time I've experienced an oil leak that wasn't there before and the engine hesitation as mentioned......usually in lower gears 1st through to 3rd, sometimes 4th and around the 2000rpm mark, there's a slight flutter / hesitation in picking up, more noticeable at low speeds.
Took it back to the dealer and complained - They've since fitted another new cylinder head as the cam shaft was out of spec and caused a problem with a seal seemingly.
Car was in for around 8 days or so for this to be done and I wasn't best pleased to say the least.

The issue now???
Since I've had the car back Friday I think it was I've suffered with the same engine hesitation - something is definitely NOT RIGHT.
The other issue is that on Sat am and early today on first start up the car wil not fire......almost like water in the fuel or low battery where it just turns n turns and eventually catches

I'm gonna be on the phone to them tomorrow and see where we go from here.

I'll keep you guys updated

Thanks

Jim

 

[theo289]

Hi all...had a few problems with my 07 A6 2.0 tid which have included cold / non start issues and loosing coolant among them.
Having taken advice I've visited the dealer many times re the low coolant issue and they've replaced the cylinderhead around a month ago. Since that time I've experienced an oil leak that wasn't there before and the engine hesitation as mentioned......usually in lower gears 1st through to 3rd, sometimes 4th and around the 2000rpm mark, there's a slight flutter / hesitation in picking up, more noticeable at low speeds.
Took it back to the dealer and complained - They've since fitted another new cylinder head as the cam shaft was out of spec and caused a problem with a seal seemingly.
Car was in for around 8 days or so for this to be done and I wasn't best pleased to say the least.

The issue now???
Since I've had the car back Friday I think it was I've suffered with the same engine hesitation - something is definitely NOT RIGHT.
The other issue is that on Sat am and early today on first start up the car wil not fire......almost like water in the fuel or low battery where it just turns n turns and eventually catches

I'm gonna be on the phone to them tomorrow and see where we go from here.

I'll keep you guys updated

Thanks

Jim

Hi,

I have exactly the same issue with my car. Did you manage to get to the bottom of this fault?