1.9 TDi 130 Judder/Shake

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s4k1b

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Im new here, this is my 3rd thread, hello
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I have a 2004 A4 B6 130ps 1.9 tdi.

My engine shakes/judders at idle !

It really bothers me sometimes. Its been serviced recently, had a new thermostat and coolant temp sensor, and it starts on the button.

It drives fine, there are no problems.

Only at idle, i have a slight judder.

I believe there will be lots of us out there who have this problem as it is quite common.

I have been reading and i believe it may have something to do with the timing adjustment?

My timing belt was replaced by KwikFit in Glasgow a couple of years ago before i owned the car at 90k miles. My car is now at 105k miles. Could the timing have slipped fractionally on replacement of the belt, or even afterwards?

I know that you can hook up to VAGCOM to read the timing values?? and this will determine if it needs adjusting - in which case you attach a socket onto the cam and give it a tug to adjust.

What are the timing values supposed to be ?
How do i determine if it is this and not something else?





Is there anyone in the Leeds, West Yorkshire area who has VAGCOM and can read these timing values for me ?


I have an OBD2 code reader and using the app on my phone, i have a Timing advance figures of 60 degrees.

Is this correct?



Any light shed on this matter would be most appreciated. Thank you
 
Only time i have had this is when I was running a plug and play chip, which was causing it to over fuel .
Has it dine this ever since you owned it?
 
I didnt notice it when i bought it, nope.

Started a few weeks later

Since then i have installed a p&p chip - it hasnt affected my economy, but i certainly have more power, and the shake hasnt got any better or worse.

i will take the chip out and see how it goes - im sure it will make no difference as it did this before the chip.
 
If it did it before the chip, then I would get ya self or someone close with vag-com and do some live data logging to see what's what
 
Similar thing with my tdi awx engine, shakes the car when idling sometimes.
It normally does it when the engine is properly warmed up.
When its doing it, try turning on the rear demist, lights, heater etc, this on mine will stop it shaking, by putting a little load on the engine, or bring the clutch in fractionally so it is just beginning to bite, that stops it too.
Mines done it for the last 60k ever since I've owned it.. gone through countless services, cambelt changes etc, no change.

My timing setting, or syncro angle as it is in vcds, is set to 0 degrees...
 
Demus - does this not get on your nerves? it really gets on mine.

i find myself sat with the clutch fractionally in when i have passengers because its a little bit embarrasing at times!

I have sat in/drove other cars of the same model and they are so stable, i want mine to be like this!

it's going to drive me bonkers one day and i will drive it into a tree i'm sure lol

I havent looked at timing advance via VCDS but via OBD2 reader and a phone app. "Timing advance 60 degrees" is what was stated.

I found this.

http://www.myturbodiesel.com/wiki/c...lue-adjustment-on-vw-and-audi-pd-tdi-engines/

this is a possibility - but what do those timing numbers mean and how do i know if my timing needs adjusting?

calling VCDS expert !


(what will be my engine code? i have a 2004 1.9 tdi 130bhp (6speed) is it AVF ?)
 
Timing should be as close 0 degrees in VCDS as you can get it. Above video is showing the correct adjustment.
Other causes of juddering at idle on 1.9tdi's are DMF, Engine mounts, & worn AC compressor bearings.
 
i dont think its my DMF.

Engine mounts - can you elaborate on which ones and how i determine ?

AC compressor bearing - when i switch AC on i hear no untoward noises and the judder remains.
 
My engine certainly doesnt do this...... lol

 
Problems at idle can be due to the one way bearing on the alternator seizing up, this causes the engine to run rough at idle, If you look at the timing belt tensioner you will see it jumping around. If this is the problem the tensioner can get wrecked fairly quickly.
Other things that can cause idle instability are issue with the harness in the cylinder head for the injectors, a duff injector itself or even a cam lobe worn due to incorrect oil quality or extended oil change intervals.
To check for injector issues look at measuring block 13 for injector balance when the engine is idling.
Ideally each injector should be less than 1.0, normally they are less than 0.8 when the engine is warmed up.
You can check the cam timing from measuring block 3 on the synchro angle, should really be 0+- 1.0
Camshaft wear here.
http://www.myturbodiesel.com/wiki/camshaft-lobe-wear-inspection-and-replacement-on-tdi-pd-engine/

karl.
 
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demus said:
Similar thing with my tdi awx engine, shakes the car when idling sometimes.
It normally does it when the engine is properly warmed up.
When its doing it, try turning on the rear demist, lights, heater etc, this on mine will stop it shaking, by putting a little load on the engine, or bring the clutch in fractionally so it is just beginning to bite, that stops it too.
Mines done it for the last 60k ever since I've owned it.. gone through countless services, cambelt changes etc, no change.

My timing setting, or syncro angle as it is in vcds, is set to 0 degrees...
Click to expand...
This sounds more like your clutch release bearing is fcked. My 8L used to do this. Out clutch in and it disappears
 
The engine mounts have oil in them (hydrolastic?) run your finger around them, if you see a red oil, then they are leaking!
 
First thing to check is if the aux belt tensioner bobbing up and down like Gillian Taylforth in a Range Rover. If so then it is most likely the clutch on the alternator as mentioned above. You'll need a special tool to do this job- I recommend this one: Part MN3400 - Serrated Alternator Pulley Bit SET http://www.metalnerd.com/cat05.htm

My T5 van has the same problem and that is the known cure for that. My tool is waitin for me to pick it up from the post office tomorrow. You'll also need the correct clutch mechanism/pulley.

However, on my Golf PD130 it was the timing as mentioned above also.

On both vehicles, the DMF was playing up but that knocks not just vibes....
 
s4k1b said:
Demus - does this not get on your nerves? it really gets on mine.

i find myself sat with the clutch fractionally in when i have passengers because its a little bit embarrasing at times!


(what will be my engine code? i have a 2004 1.9 tdi 130bhp (6speed) is it AVF ?)
Click to expand...

I only drive the thing for 5 miles at a time nowadays to work and back, if it does get a good run and I get caught in traffic it does get on my wick a little.
Could well be the injectors are crapped up due to it not going far, but its just had a good blast to Wales, near on 1k in a week, ran faultlessly, driven briskly and booted up hills all the time, after that - no different.
By the way it shakes the car I have wondered if the front shocks are getting bad, although it still drives real nice (120K).

Out of curiosity, all those with this shaking thing, what suspension are you running, mines standard SE and pretty soft, and sometimes shakes like a big yank V8 :)
Can't see, with a stiffer suspension, and good mounts how it can rock the car?? That said the Cob in my picture rocks by squashing on its tyres.. nice.
 
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