Depollution Fault 1.6 HDI GP

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Re: Depollution Fault 1.6 HDI GP

Post by RichardW » 19 Aug 2018, 12:21

I think the copy position is a red herring here, it doesn't have a sensor so it can't know where it is.
You can check the MAP easily - just look at it in Diagbox with ignition on and engine stopped, it should be reading atmospheric pressure (around 1000 mbar, depending on the weather and where you live!)
Does the actuator on the turbo return quickly when you press it down?
I think these do have the filter on the vent from the solenoid, if the MAP is reading OK, and the turbo returns fast, then I would disconnect the vent or the filter and take it for a run and see what happens.

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Re: Depollution Fault 1.6 HDI GP

Post by EDC5 » 19 Aug 2018, 13:30

So this engine does not have a copy sensor built in to the turbo vacuum actuator at all?

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Re: Depollution Fault 1.6 HDI GP

Post by MikeT » 19 Aug 2018, 15:25

Delvey wrote:
19 Aug 2018, 10:16
MikeT wrote:
18 Aug 2018, 17:05
xantia_v6 wrote:
18 Aug 2018, 16:59
The copy position is measured by the pressure sensor after the turbo.
So the MAP provides both data for intake pressure and (the ECU) infers the turbo regulator solenoid valve position from it (and poss other data) as well?

Maybe the MAP is faulty then
At this point I see no other evidence to suspect the MAP, and as Richard advises you can check it with Diagbox.

(ETA) If the turbo copy position sensor doesn't actually exist and it's values are assumed according to other data, then I'm leaning toward sticky turbo vanes.

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Re: Depollution Fault 1.6 HDI GP

Post by Delvey » 19 Aug 2018, 21:45

Thanks. Yes the MAP seems to be reading 1000mbar or so at idle. Where will the filter be for the solenoid?
I might try cleaning the vanes. I've seen people use Mr Muscle. Would this be fine on this turbo? Vanes seem easy to get to

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Re: Depollution Fault 1.6 HDI GP

Post by Delvey » 19 Nov 2018, 13:40

The new sensor fixed the depollution error, however, the gearbox seems to be knackered, and not economically repairable

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Re: Depollution Fault 1.6 HDI GP

Post by admiral51 » 21 Nov 2018, 20:16

Sorry to hear that Delvey.
Csan i ask what sensor it was you fitted ?

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Re: Depollution Fault 1.6 HDI GP

Post by xantia_v6 » 21 Nov 2018, 20:23

It would also be interesting to know which gearbox you have and how did it fail?

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Re: Depollution Fault 1.6 HDI GP

Post by Delvey » 22 Nov 2018, 16:56

admiral51 wrote:
21 Nov 2018, 20:16
Sorry to hear that Delvey.
Csan i ask what sensor it was you fitted ?

This one
https://www.amazon.co.uk/gp/product/B00 ... UTF8&psc=1

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Re: Depollution Fault 1.6 HDI GP

Post by Delvey » 22 Nov 2018, 16:57

xantia_v6 wrote:
21 Nov 2018, 20:23
It would also be interesting to know which gearbox you have and how did it fail?

It is the EGS, and by the looks of it, input shaft bearing. It may have spat oil on the clutch as well, as it has slipped occasionally

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Re: Depollution Fault 1.6 HDI GP

Post by admiral51 » 22 Nov 2018, 21:43

Thanks for that Delvey
Guess it was a right pain to change, seem to remember in a previous post you were thinking of putting it up on ramps to change it.

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Re: Depollution Fault 1.6 HDI GP

Post by Delvey » 23 Nov 2018, 12:29

admiral51 wrote:
22 Nov 2018, 21:43
Thanks for that Delvey
Guess it was a right pain to change, seem to remember in a previous post you were thinking of putting it up on ramps to change it.

It was, even on the ramps it is difficult, took 2 of us in the end.

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Re: Depollution Fault 1.6 HDI GP

Post by admiral51 » 27 Nov 2018, 20:30

I dont suppose you took any photos of where it is located on the engine, ordered one for mine but still have no idea of its exact location.
Happy to remove lots of bits from the top to dive in that way but cannot get car over a pit or a 4 post lift and i have no ramps, axle stands i am a allergic to if i need to get right underneath :)

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Re: Depollution Fault 1.6 HDI GP

Post by RichardW » 28 Nov 2018, 13:28

It's on the back of the engine above the OS drive shaft. I think there is no other way then from underneath....

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Re: Depollution Fault 1.6 HDI GP

Post by Delvey » 28 Nov 2018, 13:33

admiral51 wrote:
27 Nov 2018, 20:30
I dont suppose you took any photos of where it is located on the engine, ordered one for mine but still have no idea of its exact location.
Happy to remove lots of bits from the top to dive in that way but cannot get car over a pit or a 4 post lift and i have no ramps, axle stands i am a allergic to if i need to get right underneath :)

Unfortunately not. You do not have to remove anything to get to it. I went underneath the car whilst my brother helped by going through the bonnet.

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Re: Depollution Fault 1.6 HDI GP

Post by admiral51 » 28 Nov 2018, 22:09

Hopefully i will tackle the job this weekend can see it being a walk in the park and no bruised knuckles :)