 | Home > Td5 > MAP Sensor - Clean Yours! |
 
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| bankz5152 Member Since: 02 Feb 2017 Location: South London/North Kent Posts: 2178  
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Also worth pulling the whole inlet manifold off and giving it a good clean, took me less than an hour to strip mine off, clean it and refit. With the addition of a Provent 200 the inlet is still almost spotless!
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3rd Apr 2017 11:09am |
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| Oakseywick Member Since: 20 Dec 2014 Location: Cirencester Posts: 1000  
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 Not being massively mechanical minded is there a step by step guide you could share for cleaning map sensor with pics |
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3rd Apr 2017 11:15am |
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| bankz5152 Member Since: 02 Feb 2017 Location: South London/North Kent Posts: 2178
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Inlet manifold is the big tubular silvery thing on the left of the engine
Map sensor is in the middle of the inlet manifold with wires going to it Undo the two bolts - 8mm spanner I think Remove sensor Clean Replace Last edited by bankz5152 on 3rd Apr 2017 11:39am. Edited 1 time in total |
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3rd Apr 2017 11:16am |
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| Oakseywick Member Since: 20 Dec 2014 Location: Cirencester Posts: 1000
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3rd Apr 2017 11:24am |
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| rustandoil Member Since: 08 Sep 2012 Location: Cotswolds Posts: 745  
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Interesting, I will give this a go... any gasket involved?
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3rd Apr 2017 2:24pm |
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| TechnoTurkey Member Since: 25 Jul 2016 Location: Worcestershire Posts: 88 
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No gasket, there is a rubber O ring on the sensor but it should stay on the sensor and behave itself!
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3rd Apr 2017 2:38pm |
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| rustandoil Member Since: 08 Sep 2012 Location: Cotswolds Posts: 745
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Spot on! This will be interesting, mine has never been cleaned in 140k miles....
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3rd Apr 2017 3:10pm |
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| Intercept Member Since: 27 Feb 2017 Location: Suffolk Posts: 587 
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A Nanocom check of mine at the weekend showed no variance in the MAF sensor signal with RPM. Despite this it goes like a rocket - especially above 2000RPM. I doubt that a clean will fix mine but I'll be giving it a try later.
John |
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3rd Apr 2017 6:47pm |
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| roel Member Since: 08 Aug 2009 Location: Lelystad Posts: 2039  
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there is a difference between the MAF (Mass air flow) and MAP (Manifold Air Pressure)
 Roel
1984 90 2.5 na Diesel - RR V8 (1994-2001) 1997 Camel Trophy Discovery 300TDI (2001-2009) 2005 G4 Discovery III 4.4 V8 (2008-2018) It's gone but it still hurts. 2003 90 Td5 (2009-now) |
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3rd Apr 2017 6:58pm |
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| Intercept Member Since: 27 Feb 2017 Location: Suffolk Posts: 587
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Of course! I should've read the removal instructions
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3rd Apr 2017 7:22pm |
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| Caterham Member Since: 06 Nov 2008 Location: Birmingham Posts: 6300 
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A thoughts. Did you 100+mile drive this morning and I noticed for the last hour or so the ultraguage was showing an inlet temp of -3c. It did fluctuate a little and got to 2c?
It appears to be back to normal now - thoughts please? Cheers. |
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8th Aug 2017 6:14pm |
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| MadTom Member Since: 10 Sep 2013 Location: Olomouc Posts: 625  
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Check for a short circuit or probably some damaged wires. Lower resistance means lower temperature. And this can be result of low temperature or a short circuit. "Drobek" = The Small One - Discovery 2, "Blufínek" = The Blue Thing - Defender 130, and for me at least Ford Mondeo
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9th Aug 2017 6:15am |
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| Caterham Member Since: 06 Nov 2008 Location: Birmingham Posts: 6300
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Thanks MadTom.
I'll have a look but again today all appears fine. Seems like it was simply so unexplained blip....... Perhaps? |
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9th Aug 2017 7:01am |
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