Any engine issues with 120/204 ?

[Dippa]

What's the better, more reliable engine between the 150 & 204 (4M) ?

Has here been any issues to date with either of these engines

 

[Loz]

The base engines are very good, it's the bolt-on emissions stuff that causes the issues and that has more to do with how and how often you drive it.

 

[GrahamB]

The base engines are very good, it's the bolt-on emissions stuff that causes the issues and that has more to do with how and how often you drive it.

That’s an interesting comment @Loz. Can I ask - presumably you mean a lot of short journeys are bad? I have been conscious that recently mine has has a lot of school and shop runs and not much else. I guess like any modern engine, they need a proper run once a week or so to get the cat fully up to temperature?

 

[CampervanTime]

It's more to do with failed DPF regenerations during short journeys because if they happen a lot, this can then cause soot build up and a need for dealer induced regeneration via the computer.

 

[WelshGas]

That’s an interesting comment @Loz. Can I ask - presumably you mean a lot of short journeys are bad? I have been conscious that recently mine has has a lot of school and shop runs and not much else. I guess like any modern engine, they need a proper run once a week or so to get the cat fully up to temperature?

It's more to do with failed DPF regenerations during short journeys because if they happen a lot, this can then cause soot build up and a need for dealer induced regeneration via the computer.

Purchase of a Carista OBD dongle and a subscription allows you to force a DPF regeneration as and when you want to avoiding a trip to a Dealership, and a lot cheaper.

 

[B J G]

No diesel engine emission system likes short runs.

Might be worth getting a Carista as you can start a Regen process where the instructions are to then go for a run at 2000>2500rpm for approx 15 mins to clear the system. Manual gear use if DSG.

Only engine related problem to date on my 204 is a so called Moo Valve. Was intermittent and couldn't get it do it when trying to diagnose. Replaced the one that controls the EGR and seems OK so far. £42 cost.

 

[GrahamB]

Purchase of a Carista OBD dongle and a subscription allows you to force a DPF regeneration as and when you want to avoiding a trip to a Dealership, and a lot cheaper.

Useful info thanks @WelshGas and @itguy, I will look into this!

 

[Dippa]

Purchase of a Carista OBD dongle and a subscription allows you to force a DPF regeneration as and when you want to avoiding a trip to a Dealership, and a lot cheaper.

I think I'll get one of these

 

[Dippa]

Purchase of a Carista OBD dongle and a subscription allows you to force a DPF regeneration as and when you want to avoiding a trip to a Dealership, and a lot cheaper.

Sorry for the double post!

WelshGas, how often do you force a DPF regeneration ?

 

[B J G]

I think I'll get one of these

Be aware that cheap to buy but there is an annual subscription. Still worth having.

 

[WelshGas]

Sorry for the double post!

WelshGas, how often do you force a DPF regeneration ?

Mines a daily driver. Normally 20,000 miles/yr, but only 10,000 during Covid unfortunately. So have no need to force DPF regenerations. Also, it’s a Euro 5.

 

[sidepod]

Slight off topic but, does Carisa allow full access to ABS related faults? I have a similar thing that doesn’t. My MOT guy tells me ABS faults have another level of protection from “cheaper” diagnostic kit.

 

[WelshGas]

Slight off topic but, does Carisa allow full access to ABS related faults? I have a similar thing that doesn’t. My MOT guy tells me ABS faults have another level of protection from “cheaper” diagnostic kit.

I gather some have used Carista to isolate faulty ABS sensors, but might be model dependant.
VCDS does.

 

[B J G]

Sorry for the double post!

WelshGas, how often do you force a DPF regeneration ?

Carista shows the level of soot in the DPF and you can decide if you wish to do a regen or not.

Shows as a gram number but I haven't found what is 'normal' figure as yet.
When I had my Pendle update the guy talked in a % figure for soot not gram. 25% was shut down figure he said.

Hopefully someone on here can enlighten me on this.

 

[WelshGas]

Carista shows the level of soot in the DPF and you can decide if you wish to do a regen or not.

Shows as a gram number but I haven't found what is 'normal' figure as yet.
When I had my Pendle update the guy talked in a % figure for soot not gram. 25% was shut down figure he said.

Hopefully someone on here can enlighten me on this.

This might help.

[T6_measured] DPF regeneration vs. short journeys

Got curious how T6 copes with doing short journeys. And how short would be too short for successful DPF (Diesel Particulate Filter) regeneration. The graphs below are result of doing short journeys - the plotted one is number 3, thus two interrupted DPF regens before this. At this stage the...

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