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Diesel Particulate FILTER light going on and off

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hi

I was wondering if anyone can help me.

as you can see above I have this problem at the moment.

I put two bottles of forte into my diesel tank to try and clean the EGR as AA came out and said it needed cleaning or replacing and was advised to do this as only part of the process.  (A specialist diesel mechanic told me to add these and not AA)

also bought forte oil to be put in with the old oil  in my car and to idle the car engine for 20 to 30 minutes to flush out gunk that may be blocking EGR.

after this was done put a new oil filter in and also forte oil additive with new oil VW proper oil full synthetic,

 

I have done this and the light still keeps on flashing on and then after a while just goes off of its own accord so still holding my breath when driving in case this light comes back on again.

 

Also since having a new turbo in and engine almost rebuilt again I am hearing what sounds like wind whistling noise when I get up to about 50 or 60 miles an hour which I never heard before this was done.

 

could it be an oil seal somewhere as the noise just sounds like a slightly open window that air is whistling through coming from under the bonnet,

 

I am also wondering whether this has got something to do with the DPF light keep going on and off.

 

could it be oil filter not replaced properly or some pipe leading to the turbo as it sound like it is coming from the turbo.

 

Car is also wanting lots of oil too

 

any help please would be much appreciated as at my wits end with the problems now with my car.

 

one more thing my car exhaust fumes are really strong at times too

 

thanks

additives I used are in pics below :)

 

 

here is some info which makes me think this

 

after filter replacement?

 

FAULT%20DIAGNOSIS_2.jpg

7 Apr 2015, 12:30

Workshops sometimes experience a strange humming noise generated from the area of the fuel filter element when replacing the MAHLE Original KL82 filter. This is usually due to excessive air in the system; the fuel pressure regulator, which is integrated in the housing, becomes noticeable acoustically, particularly with the KL82.
In order to prevent the air from penetrating, the following should be observed when replacing the filter:

Fig-1_3.jpg1. Before you start removing the filter, remember to wear the appropriate protective clothing (safety goggles, gloves, etc.) when working on the fuel system.

2. In order to reduce any residual pressure in the tank, briefly open the tank cap.

3. Before removing the lines, shut all connections on the line filter using suitable tools. This prevents fuel from escaping and the lines from emptying and, thus, additional air from penetrating the fuel lines.

4. During installation, pay close attention to the flow direction (pictured below) printed on the filter. Don’t interchange the fuel lines and always replace damaged hoses and clamps.

5. After the filter replacement, check all connections and fittings for leaks and tightness.

Fig-2_6.jpgIf disturbing noises persist, despite following the correct filter replacement procedure, this can also be due to a defect in the fuel delivery. To locate the fault, MAHLE Aftermarket recommends that you check the fuel pump, the tank ventilation, and the pre-filter.

Oil pressure problems
After replacing the MAHLE Original OX339/2D oil filter, it’s possible that the oil pressure indicator lights up, despite an oil pressure check not showing any significant problems. Often the oil filter is suspected as the cause of the problem. Due to an increase in enquiries about this phenomenon, the specialists at MAHLE have carried out various tests and identified the source of the fault.

Return valve – not leak-proof?
The majority of oil filter housings used in OE and the aftermarket have an integrated, spring-loaded oil return valve. Unscrewing the filter insert releases the valve, allowing the oil in the housing to flow into the oil sump. This ensures that the complete volume of oil can be drained during the oil change.

Fig-3_4.jpgThe purpose of the valve is to open the oil return channel when the filter is removed, and to close this channel when the filter is fitted. However, experience shows that the sealing ring in the valve can become brittle, with the result that the valve jams and is unable to properly seal the oil pressure channel or the oil return channel, thereby preventing the build-up of adequate oil pressure.

Because oil pressure is usually measured on the section between the oil pump and the oil filter housing, where no significant deviation can be identified due to the design, the fault is usually not noticed at this measuring point.

Check the valve
In order to prevent serious engine damage caused by insufficient oil pressure, MAHLE recommends that you check the valve’s freedom of movement before each oil filter change. The simplest way is to do so by hand, by directly actuating the valve or by briefly pressing the oil filter insert to be fitted into the housing. If the valve jams, or doesn’t move freely to the upper stop, the oil filter housing should be replaced. The housing should also be replaced when the oil pressure indicator lights up after an oil change and there is no other plausible reason for it to be activated.

post-63191-0-74571300-1460714251_thumb.jpg

post-63191-0-25106400-1460714277_thumb.jpg

post-63191-0-85567100-1460714622_thumb.jpg

Edited by lali

I'm assuming your car has the 2.0 engine, but the 1.6 shouldn't be any different.

If the DPF light is flashing, it's indicative of a fault being detected in the system. The first step here would be doing a diagnostic scan with VCDS or another VAG-compatible scan tool. You are looking to see what fault codes have been registered. It would also be a good idea to go into Advanced Measuring Blocks and check the values for DPF loading: I'd especially want to see the oil ash figure.

 

If I had to guess at this point, I'd say the DPF is toast. Your additive package is likely to have dislodged combustion deposits and sent this stuff straight out through the exhaust into the DPF and blocked it. If that is the case, it's a long shot as to whether or not it is recoverable. Your high oil consumption is probably not helping - if the engine is burning up its oil, then the ash from this will be lodging in the DPF and clogging it up permanently.

 

The whistling noise is the turbo spinning up and down. From my experience of my own car, it shouldn't be audible from inside the car unless the window is open. Did you get a brand new turbo from Skoda or a remanufactured unit? Excessive oil consumption is often an indicator of a faulty turbo and a cause for concern.

 

You mentioned having an engine rebuild - what exactly was done, and why?

A DPF light, high oil consumption and strong smell out of the exhaust is not a good sign.

 

If the car is consuming oil it sounds to me as though the turbo seals are leaking. If oil is getting into the exhaust (and the DPF) this might explain the unhappy DPF and unusual smell.

 

As above you really need to check the fault codes first.

  • Author

I'm assuming your car has the 2.0 engine, but the 1.6 shouldn't be any different.

If the DPF light is flashing, it's indicative of a fault being detected in the system. The first step here would be doing a diagnostic scan with VCDS or another VAG-compatible scan tool. You are looking to see what fault codes have been registered. It would also be a good idea to go into Advanced Measuring Blocks and check the values for DPF loading: I'd especially want to see the oil ash figure.

 

If I had to guess at this point, I'd say the DPF is toast. Your additive package is likely to have dislodged combustion deposits and sent this stuff straight out through the exhaust into the DPF and blocked it. If that is the case, it's a long shot as to whether or not it is recoverable. Your high oil consumption is probably not helping - if the engine is burning up its oil, then the ash from this will be lodging in the DPF and clogging it up permanently.

 

The whistling noise is the turbo spinning up and down. From my experience of my own car, it shouldn't be audible from inside the car unless the window is open. Did you get a brand new turbo from Skoda or a remanufactured unit? Excessive oil consumption is often an indicator of a faulty turbo and a cause for concern.

 

You mentioned having an engine rebuild - what exactly was done, and why?

I had a bent con rod which had to be replaced.  Did not get a new engine but it was rebuilt almost with lots of stuff.  Just this alone took over 3 weeks to be diagnosed as I had to take it to a diesel specialist.  The turbo is a reconditioned one.

  • Author

A DPF light, high oil consumption and strong smell out of the exhaust is not a good sign.

 

If the car is consuming oil it sounds to me as though the turbo seals are leaking. If oil is getting into the exhaust (and the DPF) this might explain the unhappy DPF and unusual smell.

 

As above you really need to check the fault codes first.

yes you may be right because the turbo has never sounded right since it was fitted.  I had the fault codes checked first time and AA told me it was the EGR that was clogged which is why I put in the additives to try and clear it but the smell is quite strong.  The DPF light just keeps going on and off all the time.

  • Author

I'm assuming your car has the 2.0 engine, but the 1.6 shouldn't be any different.

If the DPF light is flashing, it's indicative of a fault being detected in the system. The first step here would be doing a diagnostic scan with VCDS or another VAG-compatible scan tool. You are looking to see what fault codes have been registered. It would also be a good idea to go into Advanced Measuring Blocks and check the values for DPF loading: I'd especially want to see the oil ash figure.

 

If I had to guess at this point, I'd say the DPF is toast. Your additive package is likely to have dislodged combustion deposits and sent this stuff straight out through the exhaust into the DPF and blocked it. If that is the case, it's a long shot as to whether or not it is recoverable. Your high oil consumption is probably not helping - if the engine is burning up its oil, then the ash from this will be lodging in the DPF and clogging it up permanently.

 

The whistling noise is the turbo spinning up and down. From my experience of my own car, it shouldn't be audible from inside the car unless the window is open. Did you get a brand new turbo from Skoda or a remanufactured unit? Excessive oil consumption is often an indicator of a faulty turbo and a cause for concern.

 

You mentioned having an engine rebuild - what exactly was done, and why?

I usually get the AA t

 

A DPF light, high oil consumption and strong smell out of the exhaust is not a good sign.

 

If the car is consuming oil it sounds to me as though the turbo seals are leaking. If oil is getting into the exhaust (and the DPF) this might explain the unhappy DPF and unusual smell.

 

As above you really need to check the fault codes first.

will the fault codes still read when the light has gone off because this is what keeps happening.  I always get the AA to come out to my car first and read the fault codes so I know what to expect if I have to take it to the garage. 

  • Author

thanks you for your replies this is really helpful as I have always thought the turbo was faulty right from the start.  This could explain the high oil usage and smell also if the turbo seals   The AA man came and did a regen a few months ago and told me the ash figure was quite high.  I am sick and tired of mechanices supposedly fixing my car and not doing there job properly.  Same can also be said for skoda dealership as I had to take my car back to them 5 times with air con issue and still did not fix it properly.  In the end I gave up.  Someething else as well I input my vin number in for the cars that have been recalled into skoda.  I was informed straight away that this is a problem car and needs to be sorted from the website.  NOT HEARD A WORD FROM SKODA YET. 

I have had nothing but problems with this car right from the start.  I must have replaced everything you can think of with this car

  • Author

Spent over £7000.00 alone this year with problems with this car

Spent over £7000.00 alone this year with problems with this car

 

Wow

I once had an intercooler leak which prevented regen occurring and filled the DPF. Similar symptoms.

I think you need to bring this car to an independent VAG specialist. The AA are a breakdown service, not a repair/diagnostic service and may have limited diagnostic tools at their disposal. There's a lot going on here and I can't escape the feeling you've been had at some point. I'm sure there's someone here in your area who could give you some options. 

thanks you for your replies this is really helpful as I have always thought the turbo was faulty right from the start.  This could explain the high oil usage and smell also if the turbo seals   The AA man came and did a regen a few months ago and told me the ash figure was quite high.  I am sick and tired of mechanices supposedly fixing my car and not doing there job properly.  Same can also be said for skoda dealership as I had to take my car back to them 5 times with air con issue and still did not fix it properly.  In the end I gave up.  Someething else as well I input my vin number in for the cars that have been recalled into skoda.  I was informed straight away that this is a problem car and needs to be sorted from the website.  NOT HEARD A WORD FROM SKODA YET. 

I have had nothing but problems with this car right from the start.  I must have replaced everything you can think of with this car

 

 

Wouldn't an 09 plate be a PD rather than CR diesel? If it is a PD then it won't be affected by the emissions recall.

 

And i agree with Chimaera in that i think you need to see a VAG specialist to find out once and for all what the issue is rather than a normal garage or the AA.

Edited by WaveyDavey

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