Could anyone advise? I'm just trying to get to grips with my new (to me) 59 plate 1.9td. Looking behind the engine and at the start of the exhaust system is a canister that's maybe about the size of a large sweet tin. To me I'd guess that it was a simple oxidiser catalyst? That leads straight into a flexi joint with braided stainless wire outer. Next their appears to be a straight length of pipe and then the first silencer box - about level with pillar between front and rear doors.

 

So I can't readily see a DPF - something that I assume comes with pressure sense lines?

 

Would the car have a DPF or not? As standard from the factory or otherwise maybe deleted by the last owner.....

 

Julian

No Skoda with a 1.9 engine ever had a DPF.

 

The only ones that did were: 2.0 4x4s, VRS and all with CR engines.

No Skoda with a 1.9 engine ever had a DPF.

 

The only ones that did were: 2.0 4x4s, VRS and all with CR engines.

 

 

In the UK at least.

 

In other countries, a DPF was available on the 1.9

Thanks chaps - you just made my day! Yipeeeeeeeee, no blasted DPF to worry about!!! So now all I need to do at some stage is to bash the guts out of that cat (at some convenient time) and then work out, via this forum, what's the easiest way of having the EGR valve either removed or disabled.

 

Julian

The EGR delete is a no-brainer for me. This is because I still have vivid memories of the 12 hour marathon on my 1.7cdti Vauxhall stripping down the entire inlet manifold system and cleaning it out including the swirl flaps. This involved removing a chunk of common rail pipes to get to it all.

 

My Octy only had about 30K on it so if I can get the ERG deleted before work of that magnitude becomes necessary then that would be a result.

 

Julian.

The EGR delete is a no-brainer for me. This is because I still have vivid memories of the 12 hour marathon on my 1.7cdti Vauxhall stripping down the entire inlet manifold system and cleaning it out including the swirl flaps. This involved removing a chunk of common rail pipes to get to it all.

 

My Octy only had about 30K on it so if I can get the ERG deleted before work of that magnitude becomes necessary then that would be a result.

 

Julian.

The egr on these doesn't tend to get that sooted up or cause those sort of problems in my experience. There's no swirl flaps on the 1.9 engine either.

 

The no-brainer for me would be 'stop buying cdti engined Vauxhalls', but I guess you already have.

Why do people always want to delete the EGR?...Oh that's right cos they thing that having only fresh clean air in the engine will give them 50bhp More!   As said here and on my own 70k Miles 1.9, I've looked in the EGR and pipework and there is no soot or gunk in there, Its clean As Mike says " if it aint broke... Don't fix it" Just don't drive them like miss daisy..

In fairness on some engines (like the above mentioned Poxall) the egr can cause some serious issues with the inlet clogging up. But on the VAG and PSA diesels that I've owned there was very little more than a thin coating of black gunge in the egr or inlet manifold, even at high mileages.

That's correct. The 1.7cdti (Isuzu engine) was a pain in my Astra, the inlet was so clogged up that the runners were reduced down to about 15mm diameter with the soot - it was unbelievable, you had to see it to believe it. The swirl flaps were absolutely solid (shut) with gunk and the cat was practically clogged with soot too.

 

So, so much for the tree hugging cleanness of these 'modern' diesels, the soot that mine stuck out of the tail pipe for the 6 months or so before I decided I had to do something was akin to the Graf Spee smokescreen as it evaded the Exeter, Ajax and Achilles on the river Plate! I've taken measures to ensure such problems do not occur again and made it run much cleaner as a result. In all fairness it's not been a bad car other than that.

 

So, getting back to tamiyaandy and the comment about an extra 50bhp - please give me a bit more credit if you wouldn't mind - I'm not a Kevin in his rice rocket thank-you!

 

However, if a re-mapper can delete the EGR then that's a bonus for me and the environment as we all know that these modern diesels fitted with the clever-clogs paraphernalia only perform well in the emissions department for a short while when they are very new. The recent reports regarding the air quality in London back this up as the 'modern' diesel engine had not helped in the way Johnson et-al claimed......

 

Julian

Yes my mum's Astra 1.7 CDTi did exactly the same, it was surprising it still ran at all. The great shame was that the basic 1.7 Isuzu engine underneath was generally bombproof, just lumbered with a half-arsed fuel and emissions system by Vauxhall/Opel. Prior to that she had a Cavalier with the original indirect injection version of the 1.7TD Isuzu engine and it was fantastic, ran to 250k with barely basic maintenance (my stepfather occasionally used to change the oil when he remembered, sometimes using £1.99/5 litres stuff from Morrisons!) and gave no trouble at all. The car was eventually scrapped due to rotten bodywork.

 

I agree with you that EGR and cats on diesels don't do a lot of good, but then on the VAG 1.9 TDi they equally don't appear to do any harm either - hence the 'if it aint broke, don't fix it' comments.

Thanks chaps - you just made my day! Yipeeeeeeeee, no blasted DPF to worry about!!! So now all I need to do at some stage is to bash the guts out of that cat (at some convenient time) and then work out, via this forum, what's the easiest way of having the EGR valve either removed or disabled.

 

Julian

 

Why?

I agree wholeheartedly. I ran 1.7tds Astras for the driving school for years, these had the Isuzu engine, and the only gripe I had was the 4500 mile oil change interval. All had colossal mileages on them when I sold them

Mike

Judging by the number of missed oil changes my parents old Cavalier endured with no apparent mechanical issues I suspect Vauxhall could probably have doubled or even trippled that 4500 mile service interval quite easily. ISTR the Cav sometimes went 15k between oil & filter changes!

Another one for leaving the egr alone as I cleaned mine out at 130k and there was only a light deposit. think premium fuels and good runs help though. Also egr suppose to save fuel as the car warms up quicker.

Mine always gets good runs, much 250 mile stints on the motorway at the legal limits when able and sometimes rev it up through the gears at full throttle. For a basic 1.9 it's fairly brisk.

 

Julian

The Isuzu in my 1.7Astra (05) is a 9K oil change I think - though I always do it at 6-7K and it's at 170K now with no issues.

IF you look at the codes located in vehicle data sticker the options fitted to your vehicle are listed, these will be shown in code form for you the all important code to confirm the presence of a DPF will be the code 7GG (see the label in boot under the carpet or in front of service manual... IF it HAS a DPF the code 7GG will be present.)  Hope this helps... This info is an interpretation of the wording in the Octavia handbook page 33.