[Solfatara]

Will try and find out.

 

[Solfatara]

Fault codes using a basic code reader are

P12AF and P2004 Intake manifold runner control stuck open Bank 1a.

It is also saying dpf is full. Could this be related or coincidence?
Thanks
Trevor

 

[Solfatara]

Took the inlet manifold off today. I was amazed at the amount off crud that was in it. The intake flaps appeard to move freely though and rotated from horizontal to what appeared to be closed. The sensor at the top of the manifold was totally gunked up. Could this be what was causing the P2004 error code. Not sure which sensor it is? Intake air temp?? Anu advice welcome and appreciated.
Engine is B16DTH, 1.6 CDTI

 

[Solfatara]

Thanks for your reply, it's a great help. How gunked up it is after 187k miles, my gut feeling now you've said that is that its what's causing the problem. Have however taken your advice and ordered one off Ebay that's from a car that's only done 37k, so hopefully will arrive in time to be fitted next weekend.
Thanks again & will post an update when fitted.

 

[Solfatara]

Fitted the replacement inlet manifold today and really pleased to report that the P2004 error code has been cured. Used my opcom to clear the fault code and it is now showing no DTC's present.
The yellow dpf light is flashing and the red message is showing continued driving is required. However after letting the engine get to full temp 90 degrees and reving at 2000 revs for ages it still did not start a DPF regen. I am using OPCOM version 200603a. It is showing the DPF as being 255% full.

Can anyone advise where I can find the section to enablemedo do a Forced regen of he DPF in this version of OPCOM?

 

[Solfatara]

Thanks Andyl,
Would dpf back pressure be the same as DPF Differential Pressure? If so this showed, 0Kpa. I did a few snapshots and recording of live data at different points. They were saved as csv files but but when trying to upload them they are not supported files. How do I share these?.
This was all done with the car on the driveway as it is not currntly insured, but the engine was at full temp and he revs varied between 2500 and 3000 to try and start the regen now the engine management light is off. The pressure reading might have been taken when it was idling though. What should it read and how should it change when refining the engine? Increase I would assume.

 

[Solfatara]

Have tried converting the file to .pdf but it loses some of the columns for the live data files? I can do more at the weekend if some kind soul can advise which data I need to be recording. I'm mainly concerned with sorting the dpf for now. Injector #2 can wait for a later date, unless someone thinks they could be linked?

 

[Solfatara]

The reading of 0Kpa shows its below 10mb which is good, you would need to confirm this with a manometer if you suspect the sensor as faulty, i suspect the saturation level has reached such a level due to the faulty inlet manifold, now its been sorted i think the only way to reduce that level would be a dpf reset and then a forced regen followed by a dynamic one on the road, this should only be done if the dpf pressure is at a acceptable level, take readings at idle, 2000 and 3000rpm and report back.

Are there any previously done guides available on how to do a dpf re set and then a forced regen? I assume they are two separate things? Don't really want to do something wrong and mess the dpf up.

 

[Solfatara]

Well, I plugged my Opcom into the Astra in the hope of doing a reset and forced regen of the DPF but counldn't do it as there is no option in Programming and Output tests stays grey. So I am now at a loss what to do next? The Opcom allows Output tests on my 2005 Corsa, so is it the Astra thats the problem or the installation of Opcom? I'm Running Windows 7. Versions of Opcom tried are 200603a & 181022a plus Vauxcom 160115a.

If there is any other information that may help find out what I've done wrong, let me know and I'll try and provide it?

 

[Solfatara]

Must admit I'm gutted after forking out for the most up to date version that it can't do what I was wanting it for.
Where would I start looking for a GDS2 unit and how do I check it can do a regen on a B16DTH engine?

 

[Solfatara]

OK but what hardware is required to use it?

 

[Solfatara]

Hi All,
Not sure wether I should start a new topic of if this can continue now the swirl flaps appear to be fixed.

As I dont have any way of resetting the and forcing the DPF I decided to bite the bullet and insure the car and take the car for a drive now that the EML has gone out and there are no DTC's in the hope the car would do a dynamic regeneration.as that dash message is saying continued driving is required. Unfortunately after abot an hours driving at various speeds and revs nothing changed.
I did try and record some live data on my opcom but my laptops battery is not great so may not be info from the right part of the drive. If the attached file (Extention changed to pdf) does nor have the needed info can someone let me know what part of the drive and what info is required to be able to diagnose why it is not doing a regen? Failing that it may have to go to a main dealer as looking into buying a Mongoose I have gone round in circles, plus the downloading of gsd2 and the different versions there are and firmwares shas left me wondering what I really need. I did find this

http://www.obd2-diag.com/mongoose-pro-gm-gds2-cable-p-1005.htm

l but think it too good to be true and of use for the price.
Any advice and steers in the right direction of where to get one would at a reasonable cost would be appreciated. Main dealer is quoting £75 just to hook the car up to their reader before they do anything about resolving the regen problem!

I'm half way between Lowestoft and Norwich if there is by any chance anyone local that can help?

 

[Solfatara]

Thanks for that quick reply. It at least narrows it down to the differential pressure sensor or no dpf.
At the risk of appearing stupid. What does the dpf filter look like? There is the dpf unit beneath these heat shield , but I am assuming the filter is inside that unit. How do I check for its presence, does anyone have a photo off what I'm looking for? Or advice of the easiest to way to check?
As for the differential sensor. I dont have the necessary equipment or knowledge to check it. Rather than pay garage rates for them to check it ffor me, do you think it would be worth/cheaper in fitting a new one, so long as the dpf is present and the pipes clear?

 

[Solfatara]

Dropped the flange off the bottom of the dpf today. There is a filter, and to my untrained eye it looks OK, does anyone see anything to the contrary? The hoses/pipes to the differential pressure sensor also looked OK and were not blocked.
So with the readings from before. Should I put a new sensor in anywatt as I can't check the existing one, or just get the dpf reset first and see if it does a regen? And if not then put a sensor in? Not sure which way to do it....

 

[Solfatara]

The structure of the dpf looks good, no signs of over heating or distortion/cracking so i would be inclined to get the reset done and then see what happens,... reset and then monitor live data on road test to see if it will regen, monitor dpf temp sensor before dpf and also monitor the saturation level, if it starts to climb quickly then this normally points to a faulty differential pressure sensor.

Got the car back following getting the reset done. Live data is attached.from the 1st part of a 45 minute drive this evening, two of the files are too big. Soot level went from 43% up to 58% and then down a bit to 54%. Differential pressure seemed to be a bit different to;last time. As for DPF temp, I;m not sure whichreading that is? Any feedback as to whether these readings are normal or if any jump out as being strange would be wolcome.

 

[Solfatara]

Here are some snapshots of the other larger files. Hopefully they help?

 

[Solfatara]

Just to update. The car did a dynamic regen tonight while driving home. Soot level is down to 24%, and I now have peace of mind that all is working as it should. For now anyway.

Thanks to everyone for the help and advice given to aid me in fixing it.