EGR valve

[Anthony]

Sorry if this is a daft question and it doesnt make sense ! I'm after a bit of info on my egr valve . as you all know there are 2 vac lines to the egr,one slightly thicker pipe to the top of the egr valve itself which i get good suction off if i remove at idle, and the other slightly thinner one which goes to adjust the flap inside the egr ( sorry for the crap explanation!) i dont seem to get any vacum off this one and if i rev engine it doesnt seem to adjust, which i would expect to see the arm adjust the flap at different engine speeds? is this normal ?

[scarr89]

The flap only moves when the engine is cold I think. It will be sensory driven. The EGR valve is there to help the engine warm up when cold, by recycling warm exhaust gases.

Don't let it bother you...You don't even need a EGR valve. 

[Anthony]

I would rather it work as it should tho , surley if its not adjusting its not working corectly. Ive read it can cause rough ide , and when i'm going uphill i get a bit of hesitation at around 2k it sort of coughs a little and affects fuel consupmtion , i would say its the egr causeing these probs on my motor. its had a solonoid for the egr so i know thats ok . but the adjustment is controlled by the centre one of the 3, so maybe thats the fault. I took the pipe off and i could blow and suck the pipe with no resistence where as i cant the other

[Golf_GT_TDI]

One pipe operates the EGR other operates the ASV, I would think a fault would be logged if EGR was not working though, the vac line for ASV I presume only receives vacuum when you shot engine off and flap closes to shut off air to engine, it would also kick in rare case of run-away engine, once there is not vacuum the flap returns to open, I guess thats how it works?

Have you taken the EGR boost pipe off to have a look at the internals of the EGR unit? ie carbon buildup.. could do with cleaning out?

[Anthony]

cheers mate that makes sense now, that will explain why before i cleaned the egr and inlet why the engine made a knocking noise when turned off before cleaning but was much quieter after cleaning , it must'nt have been closing proprerly. sounds like egr is good though. I wrongly thought the egr used that flap to control air flow in a simular way and old carb does.

[Golf_GT_TDI]

No worries, yea the ASV flap is closed for a couple of seconds when you turn engine off so you're bang on the money there nice work cleaning it out, reminds me I need to do mine, actually might have time tomorrow.. 

[PATEMANUK]

Hi guys if i delete the EGR valve what do you gain ?

[scarr89]

Hi guys if i delete the EGR valve what do you gain ?

Have a quick search, as I CBA to write it all out 

http://www.ebay.co.uk/itm/DEEPZONE-Stainless-EGR-Delete-Kit-VW-Audi-1-9-TDI-PD130-PD150-/281032270690?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item416ed42362

Fit that sucker and remove the old one and your down 

[PATEMANUK]

Have a quick search, as I CBA to write it all out 

http://www.ebay.co.uk/itm/DEEPZONE-Stainless-EGR-Delete-Kit-VW-Audi-1-9-TDI-PD130-PD150-/281032270690?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item416ed42362

Fit that sucker and remove the old one and your down 
[/quote

Going to order me one of them cheers 

[Golf_GT_TDI]

Think I'm going to delete the EGR on mine but keep ASV, I'll cut out EGR valve, fill with jbweld and smooth it like this guy has done...





Source: http://forums.tdiclub.com/showthread.php?p=711141