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Intermittent turbo

Started by andyzb2009, April 30, 2014, 11:28:44 PM

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April 30, 2014, 11:28:44 PM
I have a 2001 galaxy tdi  and recently developed intermitant turbo problem some days works fine  on a journey then turbo just don't cut in and car looses power ?? Any advice greatly appreciated thx
May 01, 2014, 12:59:18 AM #1
Firstly you need to scan for fault codes to determine if you have a boost issue which could be under or over boost or a MAF sensor problem.
Look in our reference library for help with vagcom/vcds diagnostic leads available from eBay for under 10 quid.
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With VCDS lite (full version) need a code clearing or want to scan for faults in the north kent area, PM me. All for a pint of Strongbow.
May 01, 2014, 01:44:42 PM #2
Cars running ok sounds ok just no turbo at all unable to read codes at mo.  Drives ok no smoke just no turbo and very flat
May 01, 2014, 06:24:24 PM #3
Its most likely tripping into limp-home mode. Do you have power most days from the off and then it occasionally looses it? When it does loose it, if you turn the engine off and on again does it come back?
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May 18, 2014, 08:42:13 PM #4
Hey mirez I have an 03 galaxy 1.9tdi 130bhp it does the same thing sometimes when you reach about 50mph it goes into limp mode. On my fault code reader it brings up boost control something or other. When you turn ignition off and back on again the turbo will run fine again. Maybe go for a month or so before it would lose power again. Do you think the n75 valve needs replaced??
May 19, 2014, 04:36:11 AM #5
If your going to quote something from your fault code reader you need to be more precise, "something or other" is not good enough we need the actual code and phrase.
N75 is a possibility but wouldn't be my first choice, turbo vanes sticking is more likely depending whether under or over boost
2016 Vauxhall Insignia Elite Nav in White 2.0CDTI Manual.
2023 VW Transporter T6.1 SE In Silver 2.9TDI 150PS. 7 Speed DSG Wheelchair accessible day vehicle.


With VCDS lite (full version) need a code clearing or want to scan for faults in the north kent area, PM me. All for a pint of Strongbow.
May 19, 2014, 05:39:09 PM #6
Sorry P1557 Charge Pressure Control: Positive Deviation.
I found a vacuum hose that was pulled off the egr valve with a screw inserted and from a diagram in my haynes manual it shows it going from the egr valve to the boost pressure control solenoid. Could that be my problem? Cheers
May 19, 2014, 06:49:16 PM #7
The pipe with the screw in goes to the EGR solenoid (N18) not the boost solenoid (N75).
NO The EGR pipe being plugged will not cause the problem.
Positive deviation is overboost .
2016 Vauxhall Insignia Elite Nav in White 2.0CDTI Manual.
2023 VW Transporter T6.1 SE In Silver 2.9TDI 150PS. 7 Speed DSG Wheelchair accessible day vehicle.


With VCDS lite (full version) need a code clearing or want to scan for faults in the north kent area, PM me. All for a pint of Strongbow.
May 19, 2014, 09:06:34 PM #8
Have a look at this
May 20, 2014, 03:49:54 AM #9
The Haynes manual is completely wrong.

Have a look Here
2016 Vauxhall Insignia Elite Nav in White 2.0CDTI Manual.
2023 VW Transporter T6.1 SE In Silver 2.9TDI 150PS. 7 Speed DSG Wheelchair accessible day vehicle.


With VCDS lite (full version) need a code clearing or want to scan for faults in the north kent area, PM me. All for a pint of Strongbow.
May 20, 2014, 07:17:10 PM #10
Thanks for that, where are those diagrams from?
May 21, 2014, 03:48:41 AM #11
VAG manual
2016 Vauxhall Insignia Elite Nav in White 2.0CDTI Manual.
2023 VW Transporter T6.1 SE In Silver 2.9TDI 150PS. 7 Speed DSG Wheelchair accessible day vehicle.


With VCDS lite (full version) need a code clearing or want to scan for faults in the north kent area, PM me. All for a pint of Strongbow.
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