Hello to everybody !

I'm living in Belgium and was very pleased to discover the Briskoda Community.

At which occasion ? As seen before, because I experienced a problem with my Octavia 1900 SDI made in 2000, and now 60000 miles.

Around 2000 RPM on a steady speed, the engine sound change to a deep roar every 2 sec. making the same noise as during a strong acceleration, then back.

I removed the air hose at the entry of the engine and saw the butterfly moving from open to close every few seconds. I though this trouble should be linked to the MAF sensor working and decided to took the car to the Skoda dealer.

At first they told it was the water temp sensor and changed it (I admitt it had a problem too because erreatic idle when cold) yet now they tell me they have to change the regulating unit (comprising the butterfly box on the air inlet pipe) and that the part alone will cost about 166 GBP !

As far as I could see, the butterfly unit seem O.K., yet it think it is controlled by one or more sensors (?) and I think one of those could be responsible for the mismatch.

I cleaned the one located in the air filter, with no result. I saw there is a harness starting from the butterfly box...going where ?

From what I saw trouble with MAF control - if this is the case - this ilooks as a common problem with Skoda.

They told me the electronic receptor is part of the butterfly unit and could not be serviced separatelly.:confused:

If somebody could help, I would appreciated.

Thanks and Happy motoring !

CARFAN127

I'm not sure if the legal position in Belgium would permit this, but if it would, what I'd do in this sort of situation is look for a diesel specialist, rather than relying on the maker's dealer network. There are several makes where the standard dealer fix is "replace big expensive unit", but the maker of that unit would supply a single sunassembly, sensor or whatever and change it on the "big expensive unit".

Thanks Ken, this sounds like a good idea, I will see my dealer tomorrow and if we do not come to an agreement for a fair price, I'll take the car to a diesel specialist as suggested.

Kind regards,

No problem.

Just to help other people that could be faced with the same problem.

The problem came from the Electromotive Regulating Throttle known as EDR-Di (Ehanced Data Rate).

The EDR-Di device has 2 functions in the vehicle : 1) adjust the vacuum needed for effective exhaust gas recirculation by continuous adjustment of the throtle valve.

2) avoiding " shut down shakes" when the engine is turned off.

My dealer replaced the unit with a new one; cost for the part was about 211 GBP ( A SHAME !) . Installation and testing was another 36GBP.

The EDR unit shows the VW badge on it and is manufactured by PIERBURG 038 128 063, a membver of MSI group.

It is & single flow throttle body with an attached gear, and an electric servo motor with position feedback and integrated circuitery.

On my unit, the fault should be with the integrated circuiterey; sadly enough, this is a sealed unit and the electronic part cannot be serviced.

My feeling is PIRBURG deserve a very bad rating as this unit should last for the life of the car that I estimate as 10 year or 160.000 M.

If they are not able to manufacture a part of the needed quality, they should offer replacement parts at a decent price in line with the value of the product, or design the item in the way the electronic circuit could be changed separately, or should made remanufactured units available at a decent price.

Should people at PIERBURG need a translation in German of the whole story, please ask.

On the other and, SKODA should put pressure on such suppliers to avoid they continue to rob their customers and make them upset.

I never had to replace such an expensive part on any of my previous cars and all lasted between 8 and 10 years with around 160,000M on the clock.

I am not sure I will buy another Skoda thanks to PIERBURG !

Hint : in case somebody experince trouble with this unit, just remove the plug on the body; the valve will stay in the open position with no major effects on performance and you will achieve 2 goals : 1) save about 250GBP 2) stop to enrich people that don't deserve it.

I totally agree, and have never rated Pierburg kit very highly in the past.