General Discussion: The Motoring Thread Incorporating All Motor Vehicles (Including Motor Cycles.)


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sodomgomorra
sodomgomorra avatar

967 posts since 24/3/14

14 Jun 2018 10:27
If anything modern cars have became more sensitive for this type of use.
Kadafi39
Kadafi39 avatar

1553 posts since 30/10/09

14 Jun 2018 11:10
Many people use diesels to do 10-15 miles a day, you don't seem them all imploding by the side of the road. A modern diesel would easily do that sort of daily mileage provided every few weeks you stretch its legs.
sodomgomorra
sodomgomorra avatar

967 posts since 24/3/14

14 Jun 2018 11:26
My point still stands.
JustinCredible
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2314 posts since 11/6/08

14 Jun 2018 12:26
My diesel is fucked (dpf) and it was fine until the missus started doing the school run in it (approx. 2 miles each way albeit on 50mph country roads).
Kadafi39
Kadafi39 avatar

1553 posts since 30/10/09

14 Jun 2018 14:05
Have you tried driving the car on a motorway at around 70-80mph at 3-4k rpm for about 15mins?

A dpf is just a filter, if it doesn't get up to temp very often it can't regenerate which is just burning all the residue left on it, and it will clog up.

Doesn't mean your cars fucked or the engines gone. Many companies clean dpf's to rid the soot and crap accumulated on it, you can buy 2nd hand dpf's, companies provide them on an exchange basis, or if you know a mot friendly garage you can even remove the dpf completely and it wont affect the vehicle negatively at all.
LFC
LFC avatar

3097 posts since 14/6/11

14 Jun 2018 17:14
When I first got my car after a few months one of the sensors went in my DPF(there’s 3 I’ve been told in my cars system) and one of the reasons they said it could be is because I’m driving in to high a gear. I said I probably had been as I’d be putting it in 6th when doing 40mph.

Since then and what they recommended is if you’re doing 30, keep it in 3rd, 40, 4th and so on. I have a 2l tdi bluemotion Passat and driving like that since still gives me 800mile plus from a full tank so it makes no difference to economy which I thought it might do.

Like Kadafi said, your car needs to regenerate which takes time and needs heat. You can sometimes tell if your car’s trying to do it after a short journey becasue your fan will still be running when you turn the engine off(what I’ve been told, not in to cars at all and hate driving).
JustinCredible
JustinCredible avatar

2314 posts since 11/6/08

14 Jun 2018 17:31
Fully understand all of the above and have done my fair share of research as this has been a persistent problem - car keeps going into limited performance mode then sometimes, at random, decides it's no longer in limp mode. Tried running at 3k revs on motorway etc. and didn't make any difference. Had it in and out of the garage a few times & a few parts replaced (EGR valve, DPF recycled etc.) before taking on the chin that DPF's don't last forever and this one is dead as disco.

It's an old car now and just sits on the drive (I cycle to work most days) as bought the missus a new car but would be a shame to get rid of it as when it's firing on all cylinders it's a great drive and when new was top of the range with all the gizmo's you don't really need but secretly want.
krisricey
krisricey avatar

1710 posts since 24/3/12

15 Jun 2018 11:40
Good to see that it's not just me on the fence about these filters etc. I will list the X5 on eBay and wait for the right offer, I'm in no hurry to sell it as I love driving it. I won't see the diesel economy on it with such little driving but that doesnt bother me, it's the bigger bills in the future that make me want to move it on before it happens
krisricey
krisricey avatar

1710 posts since 24/3/12

15 Jun 2018 11:41
JustinCredible wrote: when new was top of the range with all the gizmo's you don't really need but secretly want.

Same as mine, hence reluctancy to sell Laughing out loud
Essence
Essence avatar

3106 posts since 10/1/05

16 Jun 2018 17:21
https://www.terraclean.co.uk/