Pd140 BKD engine judder on idle ??????

[mk4 cupra]

Hi people I own an 06 plate audi a3 2.0l tdi sport yes I know it's not a Leon but same engine
BKD engine code

Basicly when on idle the car has a slight engine judder. The revs don't move at all plus if u put foot on or off the clutch it makes no diffrance at all. Also if u turn air con on or any other things to get more load once again it don't make a diffrance.

It drives fine it only has this fault on idle (tickover) does any one else have this fault or know what could be causing it

 

[olitaylor07]

Does it happen when cold or all the time?


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[mk4 cupra]

All the time cold warm don't matter or make any diffrance

 

[KTM540]

Zackly the same as mine by the sound of it ... lumpy idle with no rev flutuation, tho can effect drivability if trying to crawl on idle (like around a slow car park or similar) which a torquey diesel should do p!ss easy

I was wondering if it was EGR related

 

[olitaylor07]

Mine does it only when cold. I think it's the EGR that's clogged up and to be honest it's easy to take off and clean. Or get a EGR delete kit and get it coded out.


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[mk4 cupra]

Sounds like a plan then remove the egr and get it stage 1 mapped has any one actully found out what's the cause of the fault through

 

[olitaylor07]

I arent 100% pal. I know they get clogged up with soot etc so the air wont be freely flowing. I'm sure google will be able to help. Lol


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[mk4 cupra]

On google it talks rubbish lol alot of people have been saying its clucth at fault sorry but it defo ain't that lol

 

[KTM540]

Mine does it only when cold. I think it's the EGR that's clogged up and to be honest it's easy to take off and clean. Or get a EGR delete kit and get it coded out.


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Do you know if there has been any tutorials/pics on here of removing the EGR on a PD motor mate ?

 

[mk4 cupra]

Not that I know of on my audi pd140 it's easy because its at the front of the engine easyly accessible

Where as my ibiza Cupra tdi pd160 it's a twa* becasue it's at the rear of the engine and very hard to access

 

[olitaylor07]

It's literally 3 bolts pal (I think) however the rear one is a pain to get out. Look at this to see how it clogs up.

http://www.briskoda.net/forums/topic/212548-egr-valve-cleaning/


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[KTM540]

It's literally 3 bolts pal (I think) however the rear one is a pain to get out. Look at this to see how it clogs up.

http://www.briskoda.net/forums/topic/212548-egr-valve-cleaning/


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The pictorial by "Plantman" about 25 post's down is very good ... though I dont think I saw anything about how you get to a couple of the bolts that look virtually inaccessable holding the EGR to the manifold ... there is obviously a way to do it, though I dont think I'll attemp it untill I find the answer first

 

[olitaylor07]

I think it looks easy. Three bolts and two for the return pipe and that's it??


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[KTM540]

So how do ya get a socket on the one at the back, and the one above the feed pipe ?

 

[olitaylor07]

Well if you have an extension attachment it should be easily accessible. Just need the right tools.


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[KTM540]

Ah right, I'll have a gander over the w/end ... cheers chap

 

[mk4 cupra]

So has any one actually found out if the egr is the fault with this

 

[James_R]

High resistance in the injector loom can cause a rough idle as can partially blocked injectors. The egr can't be ruled out though. Checking the injector balance on VCDS will reveal if there is a fault in that area.