Technical EGR Valve

Currently reading:
Technical EGR Valve

Wow thanks for the info there guys, very much appreciated.

basically have run through the options with me pa, and have agreed to replace the unit. Rang round a number of independents, few vauhxhall garage, one of which was adament it wouldn't fit the car as not the same...

Anyway have decided to go for a replacement at £90 inc vat...

As per Radlet, i am going to clean and refurb the old one have a little play about see how it work.

It's the latest in a bit of a line of problems however we want the car at fully fighting strength, looks like he will be wanting to trade it in for the new Alfa Giulietta come summer time maybe...

Cheers peeps.
 
Ok so now getting a little frustrated with this silly silly thing!

went to get the replacement today and it was totaly the wrong part!! Grr!

So decided to strip it anyway and look to give it a thorough clean as wanted the actual part number from the one specificaly on the car to avoid any further problem when ordering the new one. (again).

So striped it to this point



Now i have given a good clean and the main chamber spring (as in image 2 and 3) was initially a bit stiff and the valve was open slightly. (this has been blanked off for a week and not in use bear in mind).

The top part which splits from the main unit using the torx was a little dirty but the lttle nodger for want of a more techincal term moved very freely with little resistance.

Now at this point i though best not to follow the full guide as my dad was havin a bit of moment with the car in bits and didn't want me to drill the top as per the guide and hit the solenoid out.

Now as the part was moving very well do you think it would be reasonable to assume it is in fact not particularly corroded/sooted and was just the main spring in the chamber needed freeing?

Cheers all
 
I've been quoted 220 Euro for an exchange EGR valve from my local #IAT dealer. I'm tempted but have not checked with GM dealer. Any advice would be appreciated. Also would the exchange unit be new or recon? It's out of warranty now so the spanners are coming out!
 
Now as the part was moving very well do you think it would be reasonable to assume it is in fact not particularly corroded/sooted and was just the main spring in the chamber needed freeing?

The question to ask yourself is why it was stuck in the first place, and the answer is that the bushes that the valve slides in get worn, allowing carbon to get in the gaps and jam the valve. So - even if you clean it up using carb cleaner, the valve will only operate correctly until more carbon gets in and jams it again. Short term fix only I'm afraid - these valves must be regarded as consumable items which is a tad infuriating given their cost :bang:

HTH.
 
Right folks I have been looking at the possibility of having the valve blanked off and the ECU re-mapped to accommodate the change.

Not possible I'm afraid folks, well hey ho, God loves a trier. In the meantime S130 could you tell me where can I get one of the bullet plates that restrict the soot from? £13 seems a cheap way to help restrict the problem
 
Hi Nick

Thanks for that. I take it that as mine is an 05 on a '55 plate it is likely to be the former (and more expensive - ain't that just the way :)) version.

Year / plate makes no difference.

The EGR housing to head mechanical interfaces are identical. The later EGR valve is what you would get if your ordered the EGR vavle from your dealer, even if they put the old part number in. I'm pretty sure the parts system will force/advise a superceed to the latest.

I'm guessing the more expensive EGR plate was and early limited quantity production to help customers with EGR problems. Later did(?) Fiat decided to revamp the whole system with new EGR valve and the later bullet price. This would require larger production, falling costs etc.

If I were you I would go straight for the later cheap plate.

Sadly I've already got the later more expensive plate instock for when I to get my hands dirty.
 
Well folks the plot thickens. I am going to have to buy a new EGR valve. I have trolled the t'internet and am totally confused. According to EPR the part no. for a Croma EGR valve is 55194735 (the 120bhp 8v is 734).

However I have seen a variety of part numbers bandied about 55204250, 55215031, 55215032 etc. etc. Now I think that all these part numbers must vary according to manufacturer (even though it is the same part).

Now some people have been telling me that it is the same part irrespective of which version of the engine you have, even though they are listed as different part number by FIAT and Vauxhall.

However, I have a copy of the Pierburg catalouge which shows they are differnt part numbers. THe original Pierburg number for the 16v 150 bhp is 7.00063.10.0 and for the 8v 120 bhp it is 7.22946.38.0.

Right I am off to cross reference these numbers. Stay tuned for further info
 

Attachments

  • pg_aa02_sr_web.pdf
    1 MB · Views: 209
Last edited:
Right folks I’ve cross referenced all the various part numbers used for the Croma EGR against the OEM Pierburg part numbers of 7.22946.38.0 and 7.00063.10.0.

Now I thought all the different part numbers would be the manufactures’ own references for this part. However you will see from the attached that the 7.22946.38.0 valve for the 8v and the 7.00063.10.0 valve for the 16v car each have 8 different part numbers. However, these 8 part numbers are common to Alfa, Fiat, Saab and Vauxhall. In other words all the manufacturers have used the same part numbers for the two valves as each other. (See attached).

So why the change in part numbers?

Is it safe to say that that as Pierburg sell two different valves the one for the 8v is different to the 16v and hence are NOT interchangeable?

But, as the part number from Pierburg for each type of engine remains constant, are they interchangeable (i.e the part number for the 16v Croma is 55194735 but can I fit a 55204250)?

Can anyone shed any light?

The reason for asking is that you can now pick these up on e-bay new for £50 onwards, but I need to be sure I get the right one.
 

Attachments

  • Alternative Fiat Part numbers.pdf
    12.6 KB · Views: 152
You could always rely on the Distance Selling Regulations if buying from a trader. Send it back within 7 days (at your expense though), then they have to refund cost and original postage.
 
I've just banged off a Technical Support query directly to Pierburg in Germany. If/when I get a response I'll put the details up here.

I've had a very quick and informative reply from Pierburg.

The points to note are:

1) Pierburg part 7.00063.10.0 is the LATEST part for the After Market and is the same part for Fiat, Lancia, Alfa Romeo, Saab, Opel and Vauxhall have as their OE-Version.

2) From the list of previous Fiat part numbers I supplied it was confirmed that they are old versions of the valve but information on what design changes were made were not available to my contact.

3) Pierburg have had no problems with the solenoid, the valves, the springs or anything else.

4) Problems people are having is due to pollution of the valve and this is down to ECU maps and not the EGR valve iteself

5) They have had no After-Market valves returned under warranty since its availabiity in the After-Market program.

From the above response my EGR strategy will be as follows:

a) Buy a new Pierburg 7.00063.10.0 valve from the cheapest source I can find.

b) Fit the Fiat bullet restrictor plate, obviously introduced to reduce pollution of the valve

c) Fully dismantle and clean the old valve, polish sliding parts etc. and put in the boot of the car with the spare wheel as a backup part for on road events.

To me it seems there is no point is messing with back level valves. Bite the bullet get the new latest valve, fit and hopefully forget.
 
Radlet6 - some `light' on this has already been covered within the Croma section.

I believe there is a difference between 8v & 16v units - they are entirely different castings. A good starting point is the ePer - but a 2010 version (& NOT the old 2005 FF version) - that will show all EGR mods from 2005 to 2010.

I posted my personal problems re EGR for the benefit of readers back in Mar 2010. Use search term [P0401]

If it aids any (1.9/16v 150hp) member running towards the EGR problem – I took a note of all the `numbers’ on the 55215031 unit …

55215031 (03/2010 @ 47.5K mls)
7.00063.11 Pierburg
B10 9090511A (Vauxhall?)
5.00240.05
09T176

The above replaced a recon unit ...

55204250 (03/2009 @ 35.5K mls)
7.00063.0(?) ... can't read last digit!
B714 FGP

Ref:
https://www.fiatforum.com/croma/229267-p0401-egr.html

-------------
55 Nuova Croma 1.9/16v 150hp (55204250 > 55215031)
 
Thanks Nick

Interesting that Pierburg are an aftermarket valve. I had heard that they also supplied as OEM too.

OK, so given the one Pierburg valve can be used to replace all eight versions from Fiat/Vauxhall/Saab, then it stands to reason that I can replace my 55194735 with any of the other seven varities.

So the brand new valve with part no. 55215031 I have just bought off ebay for £50 inc. postage should work ok. I have a blanking plate on order for pick up on Saturday too.

Will let you all know how it goes.
 
Last edited:
Pierburg make parts for manufacturers like Fiat, BMW etc.. They don't initially make them for the aftermarket. I assume they make a later decision to also supply the aftermarket. And in any case there is no aftermarket when they are designing parts for vehicle manufacturers.

Yes, 55215031 is the latest and the same as 7.000.63.10.0 and compatible with the Croma 150bhp 16V engine. Can't comment on the 8V engine.
 
Right folks I've fitted the new valve and everything works fine, so it seems that the part number is irrelevant, all that matters is that you get the right one for the 8v or 16v. These are not interchangeable as the castings are different.
 
Back
Top