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Thread: DPF and Sensors

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  1. DPF and Sensors 
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    Hi all,

    After my car went into limp mode, the Audi specialist I brought it to told me the previous owner has done the 'DPF delete', including messing with the sensors which poke into the DPF and re-mapping it all.

    Long story short I need a new DPF and 3 of the the sensors which poke into the DPF. Does anyone know what the 3 sensors are which are in the DPF? I think one is a lambda, one a pressure, but what is the third?

    Struggling to find part numbers etc for any of them.

    Any help appreciated!

    Sensors in DPF.jpg
     
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  2. Re: DPF and Sensors 
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    There's before and after pressure sensors .

    What do they mean by messing with the sensors ?

    I only suspect one has gone down.

    Back to stock and you'll be losing Stage 1 ? and mpg .
     
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  3. Re: DPF and Sensors 
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    This is becoming something of a daily question since the MOT rules changes a few weeks ago and it will carry on for the next year until all bodged cars have been converted back to how they should be or scrapped and I would say that will be roughly 50/50 as a new genuine DPF and sensor plus labour is going to come out at around £3k so around half the cars value.Aftremarket DPF’s (in my experience) are utterly useless.
    Anthropogenic climate change, the biggest con inflicted on mankind since religion...

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  4. Re: DPF and Sensors 
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    Quote Originally Posted by Gazwould View Post
    There's before and after pressure sensors .

    What do they mean by messing with the sensors ?

    I only suspect one has gone down.

    Back to stock and you'll be losing Stage 1 ? and mpg .
    He said they have tampered with the wires going into the sensor(s) in a way he hadn’t seen in a DPF delete before (think he used the term ‘botch’). Either way he said all 3 sensors need replacing alongside the DPF.


    Quote Originally Posted by Crasher View Post
    This is becoming something of a daily question since the MOT rules changes a few weeks ago and it will carry on for the next year until all bodged cars have been converted back to how they should be or scrapped and I would say that will be roughly 50/50 as a new genuine DPF and sensor plus labour is going to come out at around £3k so around half the cars value.Aftremarket DPF’s (in my experience) are utterly useless.
    Interesting. I was going to buy a £150 DPF from eBay from a ’non-dodgy’ looking seller (100 ish sold already, good rating etc) to avoid the ridiculous Audi prices. Do you think even that will be useless?

    To be honest I am in two minds to just part-ex the car against another car while it still has 6+ months MOT on it. Shame really as the rest of the car is so nice.
     
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  5. Re: DPF and Sensors 
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    Don't know why they've messed with the wires as sensors are normally removed along with dpf for the delete and put back again , even with the pipes off it shouldn't cause an error .
     
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  6. Re: DPF and Sensors 
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    As Gaz says I can’t see why they have messed around with the sensor wiring, there is no need. I have had some very annoying and time consuming sketches with aftermarket DPF’s from a number of brands, so much so that I now refuse to fit aftermarket DPF’s and prefer a cleaned used original unit if new genuine is out of reach. On some models fitting a DPF is a LOT of work and so to find the new unit is faulty is very annoying, not long back an A6 2L TDI and a new PREMIUM line DPF from a local company called B&M nearly caused me to lose the plot and has probably lost me a good customer, I am still trying to get my money back on the two DPF’s we fitted and the four pressure sensors, god knows how many hours labour. We had fitted a new DPF due to one of the EGT sensors stripping it’s thread and for some reason the old can was lying around so we had DPF clean team repair it for us, fitted and job done.
    Anthropogenic climate change, the biggest con inflicted on mankind since religion...

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  7. Re: DPF and Sensors 
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    Thanks for the responses guys.
    I can’t give any more info about the dodgy wiring I just have to go off what the specialist told me (though now you’re making me think he is wrong and just wants more money! To give him credit he did recommend source the parts yourself to try and save some money).

    I’m gonna try and price up a genuine but refurbed/cleaned DPF. Struggling with the sensors so may ask him to get those, but he did say he goes to Audi for all his bits £££.

    More threads incoming later for my mystery knocking and permanent ECON light!
     
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