DPs Fault 1 hour before MoT.....
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- Stickyfinger
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Re: DPs Fault 1 hour before MoT.....
Full supply (maximum OCR) = Maximum vacuum
No supply (minimum OCR) = No vacuum (atmospheric pressure)............ So, with the engine off there should be no vacuum do you think ? (I had vacuum. I heard it release)
I find a variable vacuum in such a small pipe hard to fathom........
No supply (minimum OCR) = No vacuum (atmospheric pressure)............ So, with the engine off there should be no vacuum do you think ? (I had vacuum. I heard it release)
I find a variable vacuum in such a small pipe hard to fathom........
Alasdair
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Re: DPs Fault 1 hour before MoT.....
Can you clarify what you did to hear it release?
You may find this manufacturer data sheet helpful: https://www.partsinmotion.co.uk/xlist/5 ... _51393.pdf
You may find this manufacturer data sheet helpful: https://www.partsinmotion.co.uk/xlist/5 ... _51393.pdf
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Re: DPs Fault 1 hour before MoT.....
Just a release of the holding vacuum, it hissed.
Alasdair
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Re: DPs Fault 1 hour before MoT.....
But which vacuum hose - the incoming "supply" or the wastegate actuator?
Did you try blowing through the filter?
Did you try blowing through the filter?
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Re: DPs Fault 1 hour before MoT.....
the Variable control pressure (OUT-2)
Alasdair
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Re: DPs Fault 1 hour before MoT.....
Still waiting for the new valve to turn up....grrrrr
Alasdair
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Re: DPs Fault 1 hour before MoT.....
Opened the old one out of curiosity...it has a (very dirty) internal filter as well.
Alasdair
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Re: DPs Fault 1 hour before MoT.....
Cleaning the filter has been known to cure issues - some of the older ones had a sponge type filter, but yours looks a bit more like gauze.
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Re: DPs Fault 1 hour before MoT.....
It has the outer filter as well as this inner filter....this has the same product number but is different inside than the one I saw being dissembled on the internet.
Alasdair
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Re: DPs Fault 1 hour before MoT.....
BUGGER....the new valve did not fix the issue.
New fault text.......Not to sure which way to go now
New fault text.......Not to sure which way to go now
Alasdair
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Re: DPs Fault 1 hour before MoT.....
Does the Air Doser play a part in the turbo pressure readings ?
Only other thing i can think off is a vac leak somewhere
Only other thing i can think off is a vac leak somewhere
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Re: DPs Fault 1 hour before MoT.....
I believe that more vacuum closes that wastegate and produces more turbo pressure, so a vacuum leak would give the opposite error code.
It does however reduce the number of suspect components to the wastegate valve, the actuator, the control valve (already replaced) and the vacuum tubing (a blockage could cause this fault).
It does however reduce the number of suspect components to the wastegate valve, the actuator, the control valve (already replaced) and the vacuum tubing (a blockage could cause this fault).
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Re: DPs Fault 1 hour before MoT.....
I will try a manual test of the valve via Lexia tomorrow.........Can you test the valve via Lexia ?
I was also wondering why the fault code description has change with the new one on ?
I was also wondering why the fault code description has change with the new one on ?
Alasdair
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Re: DPs Fault 1 hour before MoT.....
“...Has change”? It’s the same fault code as you had earlier P11AA.
The code has quite a few possibilities for the culprit though, as per the fault description I put up earlier.
The code has quite a few possibilities for the culprit though, as per the fault description I put up earlier.
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Re: DPs Fault 1 hour before MoT.....
Before it was not the same description, code yes the same, the description was just pressure related before....now it has this "open circuit" stuff in a second box."
Alasdair
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