*Gauging Interest* V10 O2 sensors delete - Club Touareg Forums
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post #1 of 21 Old 04-06-2011 Thread Starter
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*Gauging Interest* V10 O2 sensors delete

This thread is for gauging interest on deleting the O2 sensors via an ECU tune.

On diesel engines, the O2 sensors have 2 roles. - It determines the EGR cycle and acts as a smoke limiter for the DPF regen cycles.

As some of you know, these sensors go faulty quite often and to replace them you need to drop engine / transmission for access which bumps up a repair bill of 2000 plus. This might happen at least one or twice in during ownership as O2 sensors have been reported to fail between 50k-100k miles.

My solution- Permanently delete the 02 sensors' workings. You do not need to remove engine or remove O2 sensor, I will kill the sensor via an ECU tune. This will no longer activate a DPF regen so the DPF will need to be removed if you have a DPF. EGR will also slow down but no CEL lights will appear.

If there is interest in this, I will investigate it further. It will take at least a month or two months to develop this as it is something I or no other tuner I have ever heard of doing this.
Naturally I am not going to spend tonnes of hours working at this if there will not be much interest for it.


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post #2 of 21 Old 04-07-2011
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Well I actually and went ahead and replaced mine while the engine is out but I definitely would not want to drop it again to replace two measly sensors in the future. I also would like to someday get rid of the DPFs as my recent turbo failure plugged the DPF up! Thankfully it was under warranty still but if you can offer feasible solutions to mitigate potential maintenance nightmares, I think it would be much easier to justify not having a warranty!

I'm not really sold on purchasing expensive extended warranties and definitely a preventive maintenance guy so the things that you could offer definitely have some merit!
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post #3 of 21 Old 04-07-2011
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Preventive maintenance is an Extended Warranty - If you had to pay for the work they completed on the turbos and DPF's you'd have shelled out significantly more than a good extended warranty....I guess until you have to pay for yourself you just won't get it.

On the subject of O2 sensor deactivation and DPF removal - after 100K this will likely be more of a concern of mine and I'd very likely do such if we keep the V10. Fortunately we have a couple of years to go before the 100K warranty expires and the mileage gets to this level.
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post #4 of 21 Old 04-07-2011
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Extended warranty has nothing to do with preventive maintenance. It is for peace of mind and an insurance policy "if things break". Preventive maintenance is changing the oil on time, replacing lifetime fluids, oil analyis, replace fuel filter and air filters as needed. Also perodically checkng the soot level of the DPFs. I have done all of the above. Have you?

In my case my problems were caused by human error because when I had my valve cover leak repaired, for some reason the technician did not put the arm back on that connects the servo motor to the turbo.

I think you should probaby buy a V10 with an initial warranty as in my case I had a pre owned recertified vehicle. But I am not going to spend another 3 to 4 k on another warranty after my current one expires.

I can buy parts from 1stVW parts cheaper than a warranty and I could invest the same warranty money into the potential solutions that Custom Spooling provides.

I pay to prevent problems!
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post #5 of 21 Old 04-07-2011
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A Friendly "Pun" was intended when I stated preventive maintenance on the V10 was an Extended Warranty. Doesn't matter how well you maintain it, though I suppose you could significantly shorten the life of certain components by not doing so. When the engine comes out, $3-$4K is a normal expenditure for such. The older the vehicle gets the more likely problems will surface (transmission would be another example), just the law of averages will support such. Wish it was as simple as preventive maintenance or as you put it "I pay to prevent problems" this is just not likely going to save you from an eventual major failure that will greatly exceed the cost of a good warranty. Certainly doesn't matter to me if you purchase such it was just an observation of what you might want to consider using logic (history of V10 repairs and costs shared on this forum) and how much the V10 repair costs are and frequency when compared to an extended warranty.

De-programing the 02 sensors and removal of DPF's are certainly good ways to prevent some of the expense down the road and I guess we agree on this point. Hopefully tuning specialist Aidan will be around when it comes time to do such a couple years down the road.
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post #6 of 21 Old 04-07-2011
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Quote:
Originally Posted by CustomSpooling View Post
This thread is for gauging interest on deleting the O2 sensors via an ECU tune.

On diesel engines, the O2 sensors have 2 roles. - It determines the EGR cycle and acts as a smoke limiter for the DPF regen cycles.

As some of you know, these sensors go faulty quite often and to replace them you need to drop engine / transmission for access which bumps up a repair bill of 2000 plus. This might happen at least one or twice in during ownership as O2 sensors have been reported to fail between 50k-100k miles.

My solution- Permanently delete the 02 sensors' workings. You do not need to remove engine or remove O2 sensor, I will kill the sensor via an ECU tune. This will no longer activate a DPF regen so the DPF will need to be removed if you have a DPF. EGR will also slow down but no CEL lights will appear.

If there is interest in this, I will investigate it further. It will take at least a month or two months to develop this as it is something I or no other tuner I have ever heard of doing this.
Naturally I am not going to spend tonnes of hours working at this if there will not be much interest for it.
I am very interested!!!!

2007 V10 TDI
2009 VW Jetta TDI
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post #7 of 21 Old 04-07-2011
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Most major component failures are well past the 100k mark. Can you even get an extended warranty in the 100k to 200k mark as I don't know? In my case, I have new turbos, new DPFs, new fuel pumps, new 02 sensors so I really don't expect anything for awhile. Buying parts directly from VW or having work performed at VW is highly inflated not to mention they liberally replace components to make some money so in reality what is the actual cost if you in theory did the work yourself or had an independant do it? So that is my logic and analysis which is based off my personal experience with my vehicle and cost saving tips provided on this informative forum.

I ultimately believe that maintaining my paid off Tourareg is cheaper than getting another vehicle. As I would be stuck with car payments and a vehicle that does not match the functions of a V10 with air suspension.

Case in point, the dealership tried like to sell me a new $60k 2011 TDI touareg and I just laughed and said, I pay to upgrade not downgrade. They had no comeback. 36K for a good used, cabable vehicle vs. 60k vehicle that is less capable.

Aidan, sorry to steer your post off-topic. Whatever you develop or provide tips on what makes my vehicle run longer, cheaper to repair, and more fuel efficient, you have my ultimate interest.
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post #8 of 21 Old 04-07-2011
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I would be interested...
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post #9 of 21 Old 04-08-2011 Thread Starter
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Cool, plenty of interest then


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post #10 of 21 Old 04-08-2011
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