Skoda Octavia 2014 VRS real Head ack

[anthoney]

Hi every one I'm here in Desperation of some help a Long Story I Own a  Ex Police  2014 Vrs est she has been my baby for 4 Years of Perfect Service then this Happened and the Night Mare Started

My Car started to not Turbo but if I stopped and re started the car it would then Run Perfect this carried on for 6 weeks whilst waiting to be  Seen at a Skoda Garage a Day Before the impending day the car Turbo Stopped Working 

next day I limped to Skodas they Plugged the car in it said it was Find they manually cheeked the turbo and reported it was working but it was sent  they said only fault showing is low Fuel Pressure and said to change the Fuel Rail Pressure sensors one was not in stock so i had to use the car even with out a turbo  the Parts came I had them fitted  Turbo still not working but Fuel Pressures reading ok Next Day the DPF blocked   called the Mobil DPF guy he was Nice said if you dont find  out why the turbo not working First you throwing  200 pounds away as the DPF will block again so dint have it done

Skoda Garage Suggested I go to a Diesel Specialist  and  I went they took a look at the car saw a small oil leak and the cars Miles and sent me home  they had mostly 2 year old car customers my old ex police  Skoda with unknow Problems I guess dint impress them

Cars DPF is Blocked changed DPF Pressure sensor in case that was faulty no change  just change the turbo Boost  Sensor had Big hopes for this being the part to fix it but no

 

the cars Turbo partly works when its stone cold of when its  Hot starts Perfect ticks over Nice  just no Proper Turbo ill add I have put cleaner in fuel and used a  special turbo cleaner in the turbo all to no change  I cant afford another car  at 68 and its  making me ill

that I cant get it Fixed I Run a Disabled lad to work and back home  so need my car  i don't get payed for the lad I do it to help him have done now for 5 years 

any  Thoughts on what's wrong I gratefully will listen to and try 

thank you in advance anthoney

[Ecomatt]

If the dpf is blocked the car will run in limp mode. Not sure the DPF guy gave you the best advice as it wouldnt block up that quick no matter what the fault was. I would get the dpf cleaned and take it from there. Or get a service regen and see if that helps.

[Vdub85]

I had some thing similar to this in a mk5 golf years ago turned out to be the throttle body! 
 

would be driving normally then lose power and end up in limp mode. Once turned off and back on it would be fine for a little bit but always came back

 

worth a check if its easy to get to

[anthoney]

14 hours ago, Ecomatt said:

If the dpf is blocked the car will run in limp mode. Not sure the DPF guy gave you the best advice as it wouldnt block up that quick no matter what the fault was. I would get the dpf cleaned and take it from there. Or get a service regen and see if that helps.

Hi  thanks for the reply ok the Car Wont Regen even a forced  one as the Turbo wont Work 2 fault Codes one is Low Boost  and other is blocked DPF even if I have DPF Cleaned it wont Regen as the Turbo wont fire Up or if it does its only a little and  Yes the Car Is in Limp Mode  the real Point about all of this  is Some times the car Drives even in Limp Mode Normally when it wants too Some times it will drive at 70Mph or 11 Mph  Crazy  I know but thats what it does

 

[MATT0693]

Has any live data been checked? It could be that the DPF has reached 'end of life' due to oil ash mass... especially if the car is high-mileage or only doing short trips.
You need someone to do the relevant logging and checks across the DPF and boost sensors, if the DPF is blocked the engine is going to find it harder to breathe so it could well cause turbo issues or the ECU to back off the boost. 

 

If it was me, I would get the data checked, especially the DPF Oil Ash Mass and decided if you want to replace it or have it cleaned. If having it cleaned you are going to need it done off the car as the additive type cleaners aren't going to cut it. Then get the garage to do the relevant logging for the turbo, make sure the actuator etc is functioning as it should.

 

Using a reputable garage / VAG Specialist will save you a lot of money long term, you need to avoid people who just plug the car in and fire up the parts cannon! 


 

[anthoney]

5 hours ago, MATT0693 said:

Has any live data been checked? It could be that the DPF has reached 'end of life' due to oil ash mass... especially if the car is high-mileage or only doing short trips.
You need someone to do the relevant logging and checks across the DPF and boost sensors, if the DPF is blocked the engine is going to find it harder to breathe so it could well cause turbo issues or the ECU to back off the boost. 

 

If it was me, I would get the data checked, especially the DPF Oil Ash Mass and decided if you want to replace it or have it cleaned. If having it cleaned you are going to need it done off the car as the additive type cleaners aren't going to cut it. Then get the garage to do the relevant logging for the turbo, make sure the actuator etc is functioning as it should.

 

Using a reputable garage / VAG Specialist will save you a lot of money long term, you need to avoid people who just plug the car in and fire up the parts cannon! 


 

Hi mate ok first if you read my intro to the Problem its been to Skodas  who dint Know what was wrong its had a  full live data read  out dint say Much that helped Skoda Did check the Turbo the DPF man that I had come out  just said DPF Blocked 

He dint say it was Broken Car Has Done 133 K  so Not really Tons of Mileage for a SKODA every  one that I've been to with the Car Scratched there Heads and say they never come across this Cars Problem Before Id Be Happy to throw another 200 pounds at the Car and have the DPF cleaned But its  No Going to Fix the Problem that Blocked the DPF the first time  

But I appreciate your input  re read my long intro you will see Many have had a go at Fixing the car and Kinda given it up or Passed the Buck to  some one else 

all the best Anthoney

[MATT0693]

Just because the vehicle has been to Skoda, doesn't mean you had a good technician or one that could be arsed to do their job properly. The whole point of vehicle diagnostics is to find out what is wrong using the data, knowledge and experience... to many places are willing to charge £X for a 30min slot which consists of a plug in and a quick visual.

I am in the trade and have seen it time and time again, it is amazing how many vehicles come in with the incorrect diagnosis.

 

My point is that there actually might not be a fault, it could just be a case of the DPF has reached the end of its serviceable life and is the root cause of all your issues.

Do you know what the oil ash mass level is? Does the car do many miles per month, and do you do many short trips?
 

I have seen many a vehicle have DPF issues before a car has reached 100k. I have done a couple of vans at around 70k because of short trips.

 

 

 

 

 

[anthoney]

16 hours ago, MATT0693 said:

Just because the vehicle has been to Skoda, doesn't mean you had a good technician or one that could be arsed to do their job properly. The whole point of vehicle diagnostics is to find out what is wrong using the data, knowledge and experience... to many places are willing to charge £X for a 30min slot which consists of a plug in and a quick visual.

I am in the trade and have seen it time and time again, it is amazing how many vehicles come in with the incorrect diagnosis.

 

My point is that there actually might not be a fault, it could just be a case of the DPF has reached the end of its serviceable life and is the root cause of all your issues.

Do you know what the oil ash mass level is? Does the car do many miles per month, and do you do many short trips?
 

I have seen many a vehicle have DPF issues before a car has reached 100k. I have done a couple of vans at around 70k because of short trips.

 

 

 

 

 

Hi thanks for your Reply and I have to agree with what you say you are Right   Skoda did do a Print Out I dint understand it and the  Diesel Place I got told to take the car to dint get me the report Back so I don't have it any more

as for Driving only in town Drives with one small part  up to 60MPH  for 1 mile the rest all Town Work 5 days a week,  Weekends it sits and we don't go out the report on the DPF said it was 80% Blocked so wouldn't regen

as for how many miles a year I brought the car  4 Years ago it had 114K on it now it has 133K so only done 19k in 4 years almost 5 years now  come june  if this Helps the Car before the Turbo Problem used to Regen

when I start to drive on the 60MPH part of my  Drive 

So would the  DPF stop the turbo from Working ??

a lot of times if the car is Cold the turbo works in a limited fashion till car reaches normal temp then I lose all turbo and its  up hills at 11 MPH  But if i push the car hard the Turbo will try to work till car cools Down a bit  

it seems ??

hope this helps

Anthoney 

[Ecomatt]

Yes a blocked dpf causes the engine go into a limp mode and reduced power. I would get the dpf cleaned and take it from there. View it like a cork in the bottle. If there is a blockage the ecu will see it and restrict the amount of pressure the turbo produces.

[anthoney]

UPDATE

Well had the DPF cleaned   and Guess what made no Difference  Turbo still Not Working   and Now after  2 Days DPF  Blocked again Limp Mode ECT what a Waste of 200 pounds that was

Since then I had Some one Test   the Waste Gate to make Sure that  Part Was Working and it works fine But the Car Don't tell it to Move it seems Next I Guess is Double Check the new Boost Control  

Valve is Working as it should After that  again I'm at a Loss   ???

[MarkyG82]

My suggestion is that you don't have the right driving profile for a TDI with dpf. All your short trips will just keep blocking the filter ('f' in dpf). As suggested above. Cleaning the unit will not necessarily unblock it. A new one is needed. Easiest way to find out if it borked is to remove it (to get it properly cleaned or better, replaced) start the car and see if it's spinning up the turbo. 

 

I would then change the car for something more suitable as you will only end up in the same boat down the line. At this stage it is unfortunately going to cost something to either repair it or replace it.

 

Also, how did they clean it? Remove and blast or just bung some stuff through?

Edited 2 May, 2022 by MarkyG82

[Ecomatt]

The DPF should not block in 2 days no matter how few a miles you do.

Did the company reset the DPF value in the engine control unit? If they just cleaned it and did not reset the value the car will still think it is blocked. Either way it is not wasted money because at some point it would need cleaning.

[anthoney]

On 02/05/2022 at 13:06, MarkyG82 said:

My suggestion is that you don't have the right driving profile for a TDI with dpf. All your short trips will just keep blocking the filter ('f' in dpf). As suggested above. Cleaning the unit will not necessarily unblock it. A new one is needed. Easiest way to find out if it borked is to remove it (to get it properly cleaned or better, replaced) start the car and see if it's spinning up the turbo. 

 

I would then change the car for something more suitable as you will only end up in the same boat down the line. At this stage it is unfortunately going to cost something to either repair it or replace it.

 

Also, how did they clean it? Remove and blast or just bung some stuff through?

Ok I'm reply to this Because you don't know this but I've owned this car for all most 5 years doing the same Driving for all that time  and no Problems at all till this happened so I think in 5 years it would of Done this long ago if it was the way i drive

the Car I might be 68 but the Boy Racer is still in there  so it gets some fast driving  

[MarkyG82]

Ok. That's fair enough but it still doesn't get round the fact that it won't be getting hot for long enough unless you are going the long way round every time. The units also have a finite life and it's not unknown for them to fail at the same mileage as yours.

[anthoney]

15 hours ago, MarkyG82 said:

Ok. That's fair enough but it still doesn't get round the fact that it won't be getting hot for long enough unless you are going the long way round every time. The units also have a finite life and it's not unknown for them to fail at the same mileage as yours.

I totally agree the strange thing is if I hold the  Car in low Gears and get it Hot the turbo starts to work a little 

[MarkyG82]

Wonder if it's blocked in a way that changes with heat (obvious given your explanation above).  A bit like a thermal switch.  Give some when it's not quite hot enough and it closes up.  Did you miss my question above?  Do you know how it was cleaned?  Was it unit out and blasted or just a chemical job.  When I looked into it in past, the chemical jobs didn't hold much confidence.  A unit off job seemed to be the only way to get it done correctly and even then only saved a certain percentage of the units for any particularly useful length of time. Have you looked into how much a replacement would be?  Talking DPFs by the way.  I'm still confident that is the main issue, unless it's the coding of the DPF as suggested above.

[anthoney]

21 hours ago, MarkyG82 said:

Wonder if it's blocked in a way that changes with heat (obvious given your explanation above).  A bit like a thermal switch.  Give some when it's not quite hot enough and it closes up.  Did you miss my question above?  Do you know how it was cleaned?  Was it unit out and blasted or just a chemical job.  When I looked into it in past, the chemical jobs didn't hold much confidence.  A unit off job seemed to be the only way to get it done correctly and even then only saved a certain percentage of the units for any particularly useful length of time. Have you looked into how much a replacement would be?  Talking DPFs by the way.  I'm still confident that is the main issue, unless it's the coding of the DPF as suggested above.

Hi no mate  dint miss the Question just hadn't got round to the Reply 

ok I have no Clue what the DPF guy did other than this he used a non VAG Machine at  First and id told  him before he tryed that that Machine wont Work on my car  20 Mins Later he Agreed and went to his Van and got a much Bigger Machine I Presume a Proper Vag one he took off the Pressure Pipe from the DPF and put a full Bottle of Cleaner into the DPF the whole operation took 3 hours as for what settings he did I Don't know He did get all the Lights to go out but Said my DPF was 80% full of Ash

and said it would be a Waste of Time to Carry  on he did take me to the Back of the Car  and showed me the Catch Tray they use and  hardly any thing was in it??

He then showed me the pipe throwing its self around like it was possessed that was taken off the DPF sensor, He  said that it was still way too much Pressure coming  out of the pipe

and he said that Confirmed that the clean didn't  really Help enough 

That's all I can tell you really  Does that Help I haven't a Clue ?

Edited 5 May, 2022 by anthoney

[anthoney]

21 hours ago, MarkyG82 said:

Wonder if it's blocked in a way that changes with heat (obvious given your explanation above).  A bit like a thermal switch.  Give some when it's not quite hot enough and it closes up.  Did you miss my question above?  Do you know how it was cleaned?  Was it unit out and blasted or just a chemical job.  When I looked into it in past, the chemical jobs didn't hold much confidence.  A unit off job seemed to be the only way to get it done correctly and even then only saved a certain percentage of the units for any particularly useful length of time. Have you looked into how much a replacement would be?  Talking DPFs by the way.  I'm still confident that is the main issue, unless it's the coding of the DPF as suggested above.

Hi it is Really Strange that I Can if I Push the Car Hard Make the  Turbo Work My Mate  Thinks maybe the Waste Gate is Broken and even thou we seen the  arm move inside its not and Waste Gate stays Open the Difference is Big like going up a hill at  1st gear at 14 Mph to going up the Hill in Second at 25 MPH and staying  with the traffic flow at 30   so yes it is very Strange I can Force the Turbo to work a Little ??

[MarkyG82]

From your 2 replies above I would suggest taking to a place that can check the pressure differential of the DPF and also maybe the wastegate.  Maybe an exhaust specialist can help?  I am sticking to my original diagnosis that the DPF is end of life and needs replacing.  But, it is entirely possible that a part like the wastegate is bad.  It really does sound like the DPF though.  Turbo maybe sometimes able to spool briefly? That could easily be the pressure building behind it before the DPF.  Then it gets "clogged" as no further gasses can flow.  Then you back off the go pedal and try again and the same thing happens once pressure in front of the DPF has dropped enough to allow the turbo to spool up again.  Does that sound like what you are experiencing?

[anthoney]

22 hours ago, MarkyG82 said:

From your 2 replies above I would suggest taking to a place that can check the pressure differential of the DPF and also maybe the wastegate.  Maybe an exhaust specialist can help?  I am sticking to my original diagnosis that the DPF is end of life and needs replacing.  But, it is entirely possible that a part like the wastegate is bad.  It really does sound like the DPF though.  Turbo maybe sometimes able to spool briefly? That could easily be the pressure building behind it before the DPF.  Then it gets "clogged" as no further gasses can flow.  Then you back off the go pedal and try again and the same thing happens once pressure in front of the DPF has dropped enough to allow the turbo to spool up again.  Does that sound like what you are experiencing?

Not Really ok  if say I got in the car drive to work 5 miles car drives Rubbish no power zero turbo i Drop my mate off and  come back on the way back  on a straight bit of Road I hold the car in second and just put down for 5 ten mins we do Slowly start to go Faster Ie Revs start to go up

if I then pull up in traffic and drive away the car drive with Turbo can change gears and Keep with any traffic even up to 70 mph car Pulls like the Turbo is  Say half working

then I park the car for a few Hours get back in Car and Drive away ZERO Turbo and drives Crap again Some times i try this trick to get Turbo to respond and it Dont work id  say 65% of the time it Does Work doing that

[MarkyG82]

How long do you drive it for? Sounds like a restriction or it's going into limp mode. If you aren't driving long enough for it to regen correctly then all you are doing is clogging it up again. You need to get it properly looked at. DPF differential pressure. Turbo function. Any other faults. Make sure the fuel system is running right. Maybe even take the turbo inlet off and look at the innards. Should spin but not wobble.

[Ecomatt]

I would look locally to you for a VAG specialist who can do some live logs and see what is going on.

[anthoney]

On 06/05/2022 at 10:07, Ecomatt said:

I would look locally to you for a VAG specialist who can do some live logs and see what is going on.

Hi well if you read the Intro to this  Post your see its been to SKODA been to Diesel  Specialist I'm not sure what more i could do the Turbo has been Checked

Any Ways its going back to a tuning Specialist today in the Last Hope they find  out what's wrong or Broken  so i will make a Final Post here on the Results as if it don't get Fixed today I have the Car Sold and Cut my Losses

until it Broke it was the Most Fun Car and still Love Skoda VRS Thanks for all the reply's Guys

[BogdanB]

On 05/05/2022 at 09:17, anthoney said:

Hi no mate  dint miss the Question just hadn't got round to the Reply 

ok I have no Clue what the DPF guy did other than this he used a non VAG Machine at  First and id told  him before he tryed that that Machine wont Work on my car  20 Mins Later he Agreed and went to his Van and got a much Bigger Machine I Presume a Proper Vag one he took off the Pressure Pipe from the DPF and put a full Bottle of Cleaner into the DPF the whole operation took 3 hours as for what settings he did I Don't know He did get all the Lights to go out but Said my DPF was 80% full of Ash

and said it would be a Waste of Time to Carry  on he did take me to the Back of the Car  and showed me the Catch Tray they use and  hardly any thing was in it??

He then showed me the pipe throwing its self around like it was possessed that was taken off the DPF sensor, He  said that it was still way too much Pressure coming  out of the pipe

and he said that Confirmed that the clean didn't  really Help enough 

That's all I can tell you really  Does that Help I haven't a Clue ?

That's not proper DPF cleaning. 

The DPF should be taken out of the vehicle and pressure cleaned using a special machine designed for this. 

I also tend to think it's dpf related, since the backpressure can mess up the turbo.

[encephalopathy]

not up to speed on diesels but could the catalytic convertor matrix have broken/be blocking causing exhaust back pressure issues? happened on my petrol alfa many years ago which felt utterly asthmatic when trying to accelerate