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thorgal
Member Since: 26 Nov 2008
Location: on the east side
Posts: 541
  
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Hi,guys.
I had no luck finding an answer to my questions on US forums , so i might as well ask here,at THE SOURCE. 
I have 2005 V8 petrol HSe version and recently had check engine light and reduced engine performance message.
No elevated coolant temp. or actual reduced performance.went to local AUTO ZONE store,guy read codes,obviously unable to pinpoint exact problems computer showed as follows:
- dirty MAF sensor
-faulty oxygen sensor
-dirty fuel injectors
or dirty air filter.
I am gonna try to change a MAF sensor or oxygen sensor since air filter is fairly new and I use premium fuel only regarding fuel injectors.Can somebody guide me through changing process, please?
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 14th Oct 2009 2:28 am |
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caverD3
Member Since: 03 Jul 2006
Location: Oberon, NSW
Posts: 6922
  
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Try cleaning the sensor first.  “There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely gamesâ€
Ernest Hemmingway
D4 3.0 Active Diff, Adaptive Lights, High Beam Assist, Surround Cameras, Privacy Glass.
D3 2.7:Adaptive Headlights,Electronic Rear Diff,ARB Bar,Blaupunkt Speakers,JVC Powered Subwoofer,Removable Snorkel,Mitch Hitch,Pioneer After Market Head Unit,Steering Wheel Control Adaptor,Remote Adjustable Supension Rod System, Taxside Dual Battery System.
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| 14th Oct 2009 3:18 am |
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thorgal
Member Since: 26 Nov 2008
Location: on the east side
Posts: 541
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Should I disconnect a negative lead before I proceed?I am looking for some walk through.
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| 14th Oct 2009 3:33 am |
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DG
Site Moderator
Member Since: 12 Dec 2005
Location: The Gaff
Posts: 50934
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Quote:Mass Air Flow (MAF) Sensor (19.22.25)
Removal
1 . Disconnect the battery ground cable.
For additional information, refer to Specifications
2 . Remove the MAF sensor.
Disconnect the electrical connector.
Remove the 2 screws.
Installation
1 . To install, reverse the removal procedure.
Tighten Torx screws to 2 Nm (1.5 lb.ft).
2 . NOTE:
For NAS vehicles only.
If required, carry out a short drive cycle.
For additional information, refer to Powertrain Control Module (PCM) Short Drive Cycle Self-Test
21 year LR veteran > D2 GS 2003 > D3 S 2006 > D3 HSE 2009 > D4 HSE 2013 > D4 HSE 2015 > D5 HSE 2018 > DS HSE R-Dynamic P300e 2021
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| 14th Oct 2009 6:57 am |
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thorgal
Member Since: 26 Nov 2008
Location: on the east side
Posts: 541
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thanks,I will try to clean it first then.
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| 14th Oct 2009 1:37 pm |
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thorgal
Member Since: 26 Nov 2008
Location: on the east side
Posts: 541
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Now I hear that MAF sensor cleaner will kill it.Is this true?how much is new sensor for petrol v8 anyway?Does anybody know?
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| 15th Oct 2009 3:09 pm |
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caverD3
Member Since: 03 Jul 2006
Location: Oberon, NSW
Posts: 6922
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I am sure someone on here has cleaned one using something else.
Found some posts: (maybe the cleaner is not the problem?)
http://www.disco3.co.uk/forum/topic39141.html?highlight=maf
http://www.disco3.co.uk/forum/topic30387.html?highlight=maf “There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely gamesâ€
Ernest Hemmingway
D4 3.0 Active Diff, Adaptive Lights, High Beam Assist, Surround Cameras, Privacy Glass.
D3 2.7:Adaptive Headlights,Electronic Rear Diff,ARB Bar,Blaupunkt Speakers,JVC Powered Subwoofer,Removable Snorkel,Mitch Hitch,Pioneer After Market Head Unit,Steering Wheel Control Adaptor,Remote Adjustable Supension Rod System, Taxside Dual Battery System.
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| 15th Oct 2009 11:09 pm |
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thorgal
Member Since: 26 Nov 2008
Location: on the east side
Posts: 541
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I actually find out that might not be a problem in my case.to few codes to lead to MAF.i am getting PO 172,174 and175.MAF sensor would throw codes in 700 range I am told.
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| 16th Oct 2009 4:17 am |
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