Help PROBLEMS Juddering 2.0 TDi 170

J

jspeed2

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Hello there I have an audi a4 avant 2.0TDi 170 and I am having a few problems

I have read hundreds of threads on the internet about 170s and problems and I hope you can help me with my latest one.

The problem is the car will not accelerate when put foot down in all gears the car just judders like mad and takes ages to drive, this happens in all gears but will accelerate v slowly if just hold foot at about quarter throttle.

If I am above 2000 revs in all gears then put foot down hard the car wont judder but just feels like is not boosting and accelerates like a non turbo.

This only happens when car is warm if car is cold for first couple mins only of the drive, the car will fly like a 170 should but goes straight back to the symptoms after about 3 mins driving.

The car has had
new turbo - last year
new egr - last year
new DMF
Injectors x2
vacuum unit on inlet
cleaned egr numerous times
couple fuel filters - with no signs of oil in the filter
checked Vac pipe lines

The car has been in garage all week for latest set of injectors which i will be beginning my fight with Audi uk tomorrow to get money back, and the garage don't have a clue for the problem. On VCDS (VagCom) it shows up nothing all values on measuring blocks are correct even when driven and there are no fault codes so I have no idea what is going on please can you help ?

Many Thanks

Jason
 
My 170 is doing something very similar.

Cold it isn't as noticeable but I believe it still does it. Once warm its juddering most noticeably in the lower gears. Part throttle its fine but foot down - judder. Its also intermittant as to how bad it is. Sometimes its a just a little stutter when flooring it other times the whole car shakes.

According to Audi they replaced all the injectors and the loom on mine in March. I've had the DPF, EGR and EGR cooler removed.

Booked into a local indy for Monday to see what the score is.
 
My borther in laws 170 TDi A3 has just been into Stratford Audi for an injector loom replacement but it's still juddering at low speeds. We tried an extended run at high revs to try and clear DPF, but it doesn't seem to make much difference. Someone suggested checking the throttle body (clean up), but sounds like a PITA. He's run injector clean up and has literally given up knowing where to go next. Shame as it ruins the ownership experience on a car that's literally just tripped out of the warranty period.
 
Thankyou for your replys :)

I would be interested to hear your out come of the indy garage if possible hopefully its good news for you.

Your right it really does ruin the experience of owning an audi tempted just to get it fully sorted and sell on quick before next 'well known' problem goes :-(.

Mine has cut out fully again and towed to audi again so hopefully they can have another go at fixing it will keep all updated.
 
I had the same problem with my A3 TDI 170. All four injectors and the loom were replaced 6 months ago.

No drama though, as Eddscott suggested, I spent £15 on a new fuel filter and it's made the world of difference. Simple 10 minute (but messy) job.

Definitely worth a shot.
 
My a3 2.0 tdi is juddering too usually in 1 and 2 gears the revs go up and down abit almost like its holding back then all of a sudden it rites itself and away it goes its a dsg by the way but had gear box tested no faults, have changed the fuel filter its a little better any ideas on where to go next?
 
Scottyt said:
My a3 2.0 tdi is juddering too usually in 1 and 2 gears the revs go up and down abit almost like its holding back then all of a sudden it rites itself and away it goes its a dsg by the way but had gear box tested no faults, have changed the fuel filter its a little better any ideas on where to go next?
Click to expand...

it sounds to me like a flywheel problem mate
 
Shouldnt be the flywheel because had new one fitted about a thousand miles ago along with clutch and oil pump and oil cooler?
 
hey guys, just posted this in a lumpy idle thread, but this can also help with driveabilty as it did with mine, cheap and easy to do, just click the link and look what i posted, http://www.audi-sport.net/vb/audi-s4-a4-a4-cab-b7-chassis/177633-audi-a4-tdi-170-lumpy-idle.html
regarding the EGR valve gasket mod,

also tho i had a very nasty judder in mine, when you put the foot down, turned out it was the torque limiter cutting in, however i notice this is quite an old thread so you may of all sorted out the problems i hope,
 
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