Engine: D5: Soot Filter driving me crazy...HELP !

[rangerovering]

Originally Posted by Kev0607

Glow plugs could have an effect on the DPF regeneration.

As for removing and cleaning the DPF, there's not really a need to do that. It can be done, but its a messy.

A good blast down the motorway will clear it out, but you need to get the glow plug issue sorted first.

You could also do what's known as a "forced regen". The car needs to be hooked up to diagnostics to do that and the diagnostic tool basically tells the ECU to rev the car high for about 10-15 minutes, which raises the temperature in the exhaust/DPF and the soot flies out the back. However, the fuel can get diluted with the oil when doing that, so its best to change the oil after you've done a forced regen (just in case there's fuel dilution).

Ah ok, excellent thanks. Now to find the right relay and loacte it on the car....

Codes were ECMM-6663 and ECM-6665

[Kev0607]

Originally Posted by rangerovering

Ah ok, excellent thanks. Now to find the right relay and loacte it on the car....

Codes were ECMM-6663 and ECM-6665

Those codes would indicate a fault with cylinder 3 and cylinder 5 glow plugs.

It might not be the relay??

[Simmy]

all glow plugs must work as they are 1 of the components required for a successful regen.

[rangerovering]

Right…

After scrabbling around with a torch this evening, all glow plugs apparently are within 0.5-0.7ohms across the board.

The car has always had a code for the glow plug relay but i can’t find the picture of the code for it, these glow plug ones are more recent.

Debating whether to spend the first £50 on a relay or on glow plugs!

Suppose I could take the plugs out and test with a battery.

[Kev0607]

Originally Posted by rangerovering

Right…

After scrabbling around with a torch this evening, all glow plugs apparently are within 0.5-0.7ohms across the board.

The car has always had a code for the glow plug relay but i can’t find the picture of the code for it, these glow plug ones are more recent.

Debating whether to spend the first £50 on a relay or on glow plugs!

Suppose I could take the plugs out and test with a battery.

Those readings aren’t bad. 1ohm or less would be considered normal.

[Simmy]

you could try a used one from a breakers

[IainG]

Hi

Originally Posted by Simmy

all glow plugs must work as they are 1 of the components required for a successful regen.

I have had my V50 for 15 years and it has always had a Glow plug fault code. I was always told it was a "ghost" fault by the dealer and could ignore it.. However last year for some reason I actually unplugged the feed to the glow plugs and checked the resistances of the plugs and found 3 out of the 4 were open circuit. I did ask a few garages about replacing them and all were reluctant in case the plugs snapped.
Always had a fault code but don't know how long since each plug failed.

I have decided to leave them on 2 accounts
The car never seems to struggle on starting even in the winter( there is a slight roughness to the idle when starting during cold periods. So I put this down to the glow plugs (could also be injectors??).it clears and settles after a couple of minutes.
Also the DPF does still seem to regenerate OK. I only ever notice it on the long trip. I see the MPG drop from about 60 down to 40 for 15 / 20 minutes whilst on the A38/M5. But that is the only time I would notice it as it is the only time I am a fairly steady revs/speed for a longer period.
Since knowing the 3 plugs have actually failed(since testing them) but could be many years more? The DPF still regenerates.
I only do local driving but 1 600 mile trip every month.
I was always told the plugs aided during regeneration however they appear not to be essential. I assume the regen might take longer without them all working?

[hawksport]

Originally Posted by IainG

Hi



I have had my V50 for 15 years and it has always had a Glow plug fault code. I was always told it was a "ghost" fault by the dealer and could ignore it.. However last year for some reason I actually unplugged the feed to the glow plugs and checked the resistances of the plugs and found 3 out of the 4 were open circuit. I did ask a few garages about replacing them and all were reluctant in case the plugs snapped.
Always had a fault code but don't know how long since each plug failed.

I have decided to leave them on 2 accounts
The car never seems to struggle on starting even in the winter( there is a slight roughness to the idle when starting during cold periods. So I put this down to the glow plugs (could also be injectors??).it clears and settles after a couple of minutes.
Also the DPF does still seem to regenerate OK. I only ever notice it on the long trip. I see the MPG drop from about 60 down to 40 for 15 / 20 minutes whilst on the A38/M5. But that is the only time I would notice it as it is the only time I am a fairly steady revs/speed for a longer period.
Since knowing the 3 plugs have actually failed(since testing them) but could be many years more? The DPF still regenerates.
I only do local driving but 1 600 mile trip every month.
I was always told the plugs aided during regeneration however they appear not to be essential. I assume the regen might take longer without them all working?

The car will still do a passive and an active regen. For a forced regen there can't be any fault codes

[Kev0607]

Originally Posted by IainG

Hi



I have had my V50 for 15 years and it has always had a Glow plug fault code. I was always told it was a "ghost" fault by the dealer and could ignore it.. However last year for some reason I actually unplugged the feed to the glow plugs and checked the resistances of the plugs and found 3 out of the 4 were open circuit. I did ask a few garages about replacing them and all were reluctant in case the plugs snapped.
Always had a fault code but don't know how long since each plug failed.

I have decided to leave them on 2 accounts
The car never seems to struggle on starting even in the winter( there is a slight roughness to the idle when starting during cold periods. So I put this down to the glow plugs (could also be injectors??).it clears and settles after a couple of minutes.
Also the DPF does still seem to regenerate OK. I only ever notice it on the long trip. I see the MPG drop from about 60 down to 40 for 15 / 20 minutes whilst on the A38/M5. But that is the only time I would notice it as it is the only time I am a fairly steady revs/speed for a longer period.
Since knowing the 3 plugs have actually failed(since testing them) but could be many years more? The DPF still regenerates.
I only do local driving but 1 600 mile trip every month.
I was always told the plugs aided during regeneration however they appear not to be essential. I assume the regen might take longer without them all working?

If the plugs are soaked in penetrating fluid the night before removal and also on the day of removal, as well as removing them on a warm engine, the likelihood of them snapping is reduced. There’s no guarantee they won’t snap, or course. The garage know this, but they shouldn’t be so reluctant. They should have the equipment to deal with snapped plugs anyway. It won’t be the first time they’ve seen it, or I guess it would be if they tell people not to bother replacing plugs in case they snap.

I think the saving grace with your car is you’re doing a 600 mile trip, which is a decent run in one go. If you weren’t doing that trip, I suspect you’d have problems with the DPF because of failed glow plugs and soot build-up.

Those glow plugs in your car won’t last forever, nor will they in any car. If some aren’t working, that will put extra load on the ones that are. My advice would be to get them fixed properly, before starting trouble kicks in. Oh… find another garage too. Glow plug removal isn’t rocket science and easy in terms of what garages deal with day-to-day.

[rangerovering]

Originally Posted by hawksport

The car will still do a passive and an active regen. For a forced regen there can't be any fault codes

Does the 2.0D behaves differently to the D5?