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Vauxhall Astra H 1.7 Z17DTH 2005 - Will not rev above 3000rpm, codes P0500 & P0105 #

Posted by Chris Shelton on January 6, 2012, 7:05 pm

Year of Manufacture *: 2005
Engine Size and Code *: 1.7 Z17DTH
( Optional ) Scanner Used: Autodiagnos/Dec Superscan
( Optional) Fault Codes: P0500, P0105

Called by a garage to this car, will not rev above 3000RPM and the above fault codes stored.
These will clear but return when engine has been run.
Have checked throttle valve, vacuum lines/valves to waste gate and swirl flaps all OK, swirl flaps freed off and boost pressure sensor replaced.
Live data with IOEO shows
Boost pressure104KPA
Command Pressure 104KPA
Barometric pressure 400KPA
When engine is started initial boost pressure reads 87KPA and after about 5 seconds this changes to 307KPA at idle.
Does anyone know if the barometric sensor is in the engine ECU, as this seems to be the problem area, P0105 plausibility Maf/Barometric pressure.
P0500 vehicle speed signal missing, I do not think this is causing the problem.
Have also checked intercooler and pipe work for leaks.
All other live data looks OK.

Any help would be appreciated

Re: Vauxhall Astra H 1.7 Z17DTH 2005 - Will not rev above 3000rpm, codes P0500 & P0105 #

Posted by Andrew Moorey <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3304' width='330' height='300' border=0 style='border:none;'> on June 19, 2012, 6:21 pm, in reply to "Vauxhall Astra H 1.7 Z17DTH 2005 - Will not rev above 3000rpm, codes P0500 & P0105 #"
Andrew Moorey

Hi Chris, did you get to the bottom of this one? I have one which has the same 0105 code and reportedly will not rev above 3000 rpm. The fault on mine is intermittent, Frustratingly I have taken the car out on several occasions but not been able to replicate fault, its that intermittent.
Andrew

Re: Vauxhall Astra H 1.7 Z17DTH 2005 - Will not rev above 3000rpm, codes P0500 & P0105 #

Posted by Mark Carter <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1428' width='330' height='300' border=0 style='border:none;'> on June 19, 2012, 10:12 pm, in reply to "Re: Vauxhall Astra H 1.7 Z17DTH 2005 - Will not rev above 3000rpm, codes P0500 & P0105 #"
Mark Carter

What's your data telling you?

Modern cars, Its all wizardry and witchcraft

Re: Vauxhall Astra H 1.7 Z17DTH 2005 - Will not rev above 3000rpm, codes P0500 & P0105 #

Posted by promis christodoulou <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3441' width='330' height='300' border=0 style='border:none;'> on June 20, 2012, 12:05 am, in reply to "Re: Vauxhall Astra H 1.7 Z17DTH 2005 - Will not rev above 3000rpm, codes P0500 & P0105 #"

Chris

Re: Vauxhall Astra H 1.7 Z17DTH 2005 - Will not rev above 3000rpm, codes P0500 & P0105 #

Posted by Andrew Moorey <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3304' width='330' height='300' border=0 style='border:none;'> on June 20, 2012, 7:26 am, in reply to "Re: Vauxhall Astra H 1.7 Z17DTH 2005 - Will not rev above 3000rpm, codes P0500 & P0105 #"
Andrew Moorey

So far I have logged the live data @3000rpm for MAF,Boost pressure command/actual, slight difference here at 128.5KPa/116.96KPa, Rail pressure desired/actual 109.5MPa/109.14MPa and EGR pulse ratio 0.18% feedback 0.78v
CTS accurate and Barometric pressure remains at 100mBar.
The difference in the boost pressure concerns me.
I am suspecting possibly the vac solenoid to the turbo controller may be failing. Customer phoned later last evening to say the car had exhibited the fault again and she had noted an amount of smoke from the exhaust.No fault code logged for EGR position.

Re: Vauxhall Astra H 1.7 Z17DTH 2005 - Will not rev above 3000rpm, codes P0500 & P0105 #

Posted by Mark Carter <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1428' width='330' height='300' border=0 style='border:none;'> on June 20, 2012, 8:42 am, in reply to "Re: Vauxhall Astra H 1.7 Z17DTH 2005 - Will not rev above 3000rpm, codes P0500 & P0105 #"
Mark Carter

>>> looks to me you have 3x atmospheric pressure at idle i think that is the area you need to be looking at and what could be causing that. <<<

Looks to me that you are looking at the wrong post !!

Andrew has not posted any specs yet, which is why I asked the question.
Mark

Modern cars, Its all wizardry and witchcraft

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