Sorry, live data 

ok, thanks 

Hi Steve 

do you happen to know if this engine actually has 4 egt sensor’s, an no.2 is reading 0.

wondering if the sensor exists, or if it’s faulty ?

thanks

14 minutes ago, Frank211 said:

Hi Steve 

do you happen to know if this engine actually has 4 egt sensor’s, an no.2 is reading 0.

wondering if the sensor exists, or if it’s faulty ?

thanks

Hi I am pretty certain only three but if those readings were taken when the car is up to temp sensor 1 is definitely on its way out as it should be reading the same as 3 and 4, had this recently on a Q3 same system and two started showing a reading when I replaced 4 which was weak therefore the car would not regen properly and was chucking out black smoke, its all stopped now and will be getting a new EGR valve next Monday.

Steve.

Cheers, by any chance is that no.1 tucked in a really awkward place at bottom of the manifold ? 

No idea where it plugs it yet 🙈

Do you still think this is a possible cause to the unbelievable amount of diesel it’s using ? 

5 minutes ago, Frank211 said:

No idea where it plugs it yet 🙈

Do you still think this is a possible cause to the unbelievable amount of diesel it’s using ? 

Yes the Q3 was filled with £25 worth of diesel which allegedly gave it 190 miles drove back to home 6miles and the gauge had dropped don and only showing 80 miles on the range, two new egt sensors and a DPF pressure sensor + a MAF we are now getting 400 miles on £50 worth of diesel, the sensor in the last picture is one of them the first picture is an O2 sensor, just chase each wire from each sensor back to its plug station the plug ends are colour coded which helps.

Steve.

Quote

 

 

Ok, I’ll keep looking for the plug end . 
and I’ll order a new maf also, as I have the part no . 
Do you know if this car has a map sensor, where it is by any chance ? 
and if so , any recommendations for testing it please. 
you’ve been so helpful and it’s much appreciated, thankyou so far for everything 

The 1st pic is what it reads when I bring it up to around 1000 rpm, 2nd pic is idling. Although I have the maf disconnected whilst doing so still 

Where should I go on vcds to check egr . I checked somewhere that can’t remember now but it said error, tried it few times but no joy .

I have a Delphi system also I might try 

21 hours ago, Frank211 said:

The 1st pic is what it reads when I bring it up to around 1000 rpm, 2nd pic is idling. Although I have the maf disconnected whilst doing so still 

Hi the MAP sensor is on the inlet manifold possibly after the throttle body, try reconnecting the MAFF as at a thousand rpm the readings should climb to over two hundred degrees pretty pronto, quick solution to finding where things are is go on LLL carports site and plumb in your VIN then search for sensors and it should throw up an exploded diagram of the exhaust, if not do the same on another site ZAP7 .

Steve.

Your a gentleman, I’ll do that tomorrow.

as I’ve still no idea where it plugs in, and god knows how im going get it off . Loooks like a stripping match to get at it, maybe cut the end off it and try possibly with a socket if im able .

ordered maf and map sensor today from parts in motion as u suggested. 
can’t order egt sensor til be sure off part no if I can get it off . 
hoping can get a blowtorch on it maybe 🙈

1 hour ago, Frank211 said:

Your a gentleman, I’ll do that tomorrow.

as I’ve still no idea where it plugs in, and god knows how im going get it off . Loooks like a stripping match to get at it, maybe cut the end off it and try possibly with a socket if im able .

ordered maf and map sensor today from parts in motion as u suggested. 
can’t order egt sensor til be sure off part no if I can get it off . 
hoping can get a blowtorch on it maybe 🙈

Hi buy a good set of sensor sockets [not the cheap ones] I bought a set of US Pro off eBay they come with all the sizes you need except the 22mm for the O2 sensor, they have a cut out in them to allow the wire to go through the side, warm the engine enough to get the exhaust warm and give a soak in plusgas before you do it and leave over night, once the socket is on you can normally assemble a daisy chain of extension bars to get your drive point clear, then engage a breaker bar and applying pressure with one hand forcing down on the socket turn anti clockwise, once free chase the wire back to the connector, usually mounted on the bulkhead to the rear of engine.

Steve.

I bought different tools today, crows foot spanners, sensor sockets and eventually got it off . 
And eventually found the plug, which I had plugged out twice the other night I realised but hadn’t shown on computer like other 2 sensors did . No idea why, but happy to find it . 
Can’t read part no properly though. 
Do you, or anyone know what part no. Sensor 1 is ? 
think last few digits are. “ 088 BE “

that’s the soot content, after regen which was same beforehand 

Think I’m sorted with sensor no . 
03l 906 088BE

might try getting some dpf solution into it through the 3rd egt sensor hole, and trying another regeneration. 
is this safe enough to do, so as doesn’t suck it into egr, and into cylinders ? 

5 hours ago, Frank211 said:

Think I’m sorted with sensor no . 
03l 906 088BE

might try getting some dpf solution into it through the 3rd egt sensor hole, and trying another regeneration. 
is this safe enough to do, so as doesn’t suck it into egr, and into cylinders ? 

Hi I think you will find all the EGT sensors are the same but the easy way to find out is by going on the sites suggested, from my perspective I would try Wynns DPF cleaner, this goes in the tank and will require you to take it for a drive for a few miles the Wynns makes the soot burn off at a lower temp, the problem is that one or more sensors are beginning to fail thereby not allowing the DPF to get up to a high temp to successfully burn the soot level off, here is how it works, the MAF and MAP information is correlated by the ECU if thats all good it monitors the exhaust temp via the sensors if these are awry it will inject a lot more diesel into the cylinders to try to bring the gas stream up to the expected temp all the way along the stream which creates an unnatural extra soot load and blocks the DPF, factor in the DPF levels will still try to trigger a regen but the saturation of the unburnt fuel triggers a default strategy from the ECU which will only allow a minimum amount of diesel to be added, any DPF solution is a short term cure for a long term problem, the sensors, I have no idea how much the car cost but I am sure the vendor was aware of the problems when he sold it, its probably going to cost a few bob in sensors to get it right, the Q3 I fixes was a process of elimination changed the MAP and MAFF first based on milage and correlation issues, instant improvement, then worked the data from the EGTs which were way out from each other, this manifested itself where the soot readings calculated were massively high but the measured soot readings were low indicating that some sort of regen was happening, then changed two of the EGTs and after two days both readings were similar so changed the DPF pressure sensor and readapted it, four days later I received a call saying their was a burning smell on the motorway and was it ok to drive, I said yes and got her to run the car back on her way home, DPF loadings were 6g calculated and -5g measured therefore it had had its first voluntary regeneration, its back next week for a new EGR as thats sticking shut which means it will run hotter and if left will cook the head,

if you go into your car with VCDS select engine and then select measuring it will throw up a menu, if you type in soot it will give the option of measuring DPF soot levels measured and calculated.

Steve.

I can only thank you very much for your knowledge, time and effort to reply to me . 
Yes, I think I understand what you have said . 
I believe the previous owner knew yes . 
I have now fitted the genuine, well ( Bosch ) maf , still waiting on the map sensor, hopefully tomorrow. 
I managed to get the egt sensor based on that code, and have fitted it also. 
I drove it for 14 miles there and range dropped fairly quickly at start off driving then settled . 
brought back give it a once over and scan it again here . 
it dropped only 35 miles on this journey as opposed to the 3/4 tank to 15 miles the last time . 

I will look about wynns dpf solution tomorrow, order it if can’t get it . 
I also had the o2 sensor out, jus little spot, but cleaned it also.

I only see 1 dpf sensor mounted at back of engine with 2 pipes going into it . 
Is there any way of testing this, or maybe I should get 1 ? 

23 hours ago, Frank211 said:

I will look about wynns dpf solution tomorrow, order it if can’t get it . 
I also had the o2 sensor out, jus little spot, but cleaned it also.

I only see 1 dpf sensor mounted at back of engine with 2 pipes going into it . 
Is there any way of testing this, or maybe I should get 1 ? 

Hi the soot loadings are really good which shows you are heading in the right direction and its regenerating unassisted, you can test the pressure sensor but you will need a good Mitty vac, the price of which may well be more than another sensor, do the temperatures rise when you rev the engine, it still looks a bit weak on that front but in saying that it may well improve with the new MAP sensor, the EGR flow readings are in the same menu you used for the EGT/Soot readings just put EGR in to the search box and they should come up.

Steve.