Home > Maintenance & Mods (L322) > Diesel virgin |
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DrRob Member Since: 16 Apr 2015 Location: Petersfield, Hampshire Posts: 4302 |
You can drive yourself bonkers analysing DPF regeneration workings....I've seen it on here a lot
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21st Aug 2022 1:55pm |
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Baltic Blue Member Since: 13 Aug 2015 Location: North Wales Posts: 3766 |
I understand Pete’s desire to understand the procedure.
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21st Aug 2022 2:04pm |
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Haylands Member Since: 04 Mar 2014 Location: East Yorkshire Posts: 8207 |
I don't fret or worry about cars, just nice to know what makes them tick... everything is repairable, some faults just cost more knuckles than others....
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21st Aug 2022 2:06pm |
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Baltic Blue Member Since: 13 Aug 2015 Location: North Wales Posts: 3766 |
Get a supply of disposable gloves because you are about to discover just how dirty modern diesels really are.
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21st Aug 2022 2:39pm |
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Haylands Member Since: 04 Mar 2014 Location: East Yorkshire Posts: 8207 |
Cheers.... Pete
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21st Aug 2022 3:18pm |
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Haylands Member Since: 04 Mar 2014 Location: East Yorkshire Posts: 8207 |
There will always be something to do, I regularly try out all areas of the rev range to give my cars the exercise they need... use it or lose it as they say....
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25th Aug 2022 3:49pm |
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johnboyairey Member Since: 11 Jan 2013 Location: surrey Posts: 2032 |
my experience, was when I bought mine, as I left Birmingham to drive it to London, I got a red DPF alarm, (D'oh!) just as I was leaving the city, which on the motorway, I found I had restricted speed, around 50mph, and no real power. BUT after a 30 mile drive, I stopped, and after that it was driving fine. so it sort of fixed itself, a little. which goes against handbook theory. since then, and frequent dual carriageway and motorway drives, it never flagged anything up. however, about 8 months on, I got a yellow alarm, and that was in central London, and heavy traffic. and within 10 mins of idling, it went red. which I was annoyed about, as that is sort of 'don't drive it, get it to dealers'. so I got it home, again with a lack of power... and read the soot levels on the IID, I was now at 32grams. I had a code fault on my manifold, 'p0040d' which was not allowing 'on the road' type regens. (sensor was testing open circuit) so even with contstant cruising, it was sooting up. somewhat. anyway, I couldn't get the sensor out, as the nut broke off, and unable to get the new sensor to ever get hot...so had to make it think it had a hot temp, (sensor) with a DIY resistor. (650 ohms) I then took it out for a motorway cruise, and with the Iid tool, under service/test page, you can force a regen. you will see that the speed only needs to be 25mph, (reading goes from red to green) and temp at normal, and more than 1/4 tank of fuel. you can also see the soot level, and after about 15-20 mins, at about 40-50 mph, so I never hit any bunching traffic, it started to fall quite fast. and after a further 15 mins, was at around 0.3 gram. I then pulled off, stopped car, and dash warning was clear. car was perfect. left the resistor in, and car seems fine now, as can complete passive 'on the road' regens. p.s. you do not do Italian tune-up type 'thrash' driving, you need low revving cruise. I think you just need air blowing under the car, to stop the DPF overheating, whilst it cremates the soot.
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25th Aug 2022 4:24pm |
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Haylands Member Since: 04 Mar 2014 Location: East Yorkshire Posts: 8207 |
John, thanks for that, I read your other posts about your sensor issue, very interesting and informative, I wasn't saying an Italian tune up is good for regens, it's good to keep things working and exercised in general...
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25th Aug 2022 4:59pm |
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JayGee Member Since: 27 Jul 2021 Location: London Posts: 3207 |
Never work mine hard and can go for months without going over 2krpm or activating the 2nd stage turbo. Never do short trips and only use it for long drives. Every time you apply the power unnecessarily it's straining components and shortening their life.
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25th Aug 2022 5:16pm |
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Haylands Member Since: 04 Mar 2014 Location: East Yorkshire Posts: 8207 |
Well we will have to agree to disagree. I firmly believe in exercising a vehicle to it's parameters as long as it is well serviced and thoroughly warm. Certainly not thrashing it and not all the time but using the vehicle to it's full extent is my preferred method... Each to their own... Pete
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25th Aug 2022 7:29pm |
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Kot Member Since: 10 Mar 2021 Location: broadland Posts: 1202 |
I agree use it or lose it. On everything.
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25th Aug 2022 8:30pm |
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DrRob Member Since: 16 Apr 2015 Location: Petersfield, Hampshire Posts: 4302 |
Agreed. Open the taps for that second turbo to clear its guts...I do it regularly once engine up to temp. Gone to a good home: 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory and clear glass = "Rory"
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25th Aug 2022 8:44pm |
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JayGee Member Since: 27 Jul 2021 Location: London Posts: 3207 |
Can anyone explain by what physical process a mechanical system will last longer by subjecting it to more stress?
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25th Aug 2022 8:51pm |
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mjdronfield Member Since: 04 Nov 2011 Location: Derbyshire Posts: 7799 |
I try and get my second turbo spinning once per journey to stop the oil building up in whatever pipe it sits in…. I don’t have the turbo drain mod….. it smoked a bit when I first got it, and that has stopped the issue.
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25th Aug 2022 9:01pm |
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