Hi
My Dad has a 2.0 TDi, 110BHP CFHA engine, 2012 model with one owner. He bought it 18 months ago and got an extended warranty which isn't worth the paper its written on as it neither covers DPF or EGR issues!
Car had 42,000 miles on when he purchased it, now has 52,000 miles on it. Not long after getting it, after the engine was turned off and radiator fans were on, thought car was still running! After some research I found this to be an interupted regen cycle with the advice to be to continue on your journey. Not really plausible when you've just arrived at work and can't continue on at 2500 to 3000rpm at a constant speed for the next 30 minutes as its a built up area with traffic. Anyway, turning the ignition on and off a couple of times seems to sort that out as I understand otherwise, its injecting diesel into your oil which you don't want.
After a couple months ownership, the EGR then lit up. Again, I did a bit of research and found an Italian tune up was in order. I took it up and down a dual carriageway for 30 miles in 4th gear (this model is 5 speed) at 70/80mph (ok maybe a bit more than this). This sorted the light but we became wary about it. So to prevent further issues, for over a year I've done what I call a 'maintenance schedule', this is as follows:
Every tank - add Millers Disel Eco Max additive but double dosing it i.e. 100ml per tank
Next tank in addition to the Millers - Wynns Total Action Diesel Cleaner
Next tank in addition to the Millers - Wynns Diesel Turbo Cleaner
Next tank in addition to the Millers - Wynns DPF Cleaner
Next tank in addition to the Millers - Wynns Diesel Injector Cleaner
A contstant cycle of repeating the above for about 15 months.
As you can see, its making each tankful (a refuel is every 3 to 4 weeks), quite expensive but since doing the above the EGR valve has come on twice more, again an Italian tune up has cleared it.
I have a VW Scirocco that is a 2.0 TDi, 140bhp, CFHC engine code, 2011 model. Now I understand this is the same engine as the Yeti, standard tune/map of Yeti may be different and the tubo possibly. Layout is exactly the same as are the oil and air filters.
However, my Scirocco is standard and really has some go in it, I know its 30bhp more, but you'd think it was double the power of the Yeti with the way the Yeti accelerates in 3rd gear, its asthmatic comared to the Scirocco. Is this to be expected because the Yeti is heavier, combined with 30bhp less or could this be EGR sticking?
I have seen videos where people gut there DPF but keep in place place for a visual inspection at MOT time. However, I know it will need a remap and the EGR doing to as this is the main issue. However, can an EGR be removed, a blanking plate fitted and placed back, again for visual inspection at MOT time. I realise the EGR will have pipes capped off but at least its in place.
It was so much easier when I had a Golf MK4 TDi,1.9 PD engine when blanking an EGR simply meant taking the vacuum pipe off and capping it off with an M4 bolt!