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MAF sensor

 
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badger329



Joined: 06 Jan 2011
Posts: 160
Location: Ardnamurchan

PostPosted: Sat Aug 26, 2023 4:45 pm    Post subject: MAF sensor Reply with quote

Just fitted a new MAF sensor, will not tick over,runs awful, does it need to be syncronised or something.
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127 V8 Crew cab resting (RIP)
90 CSW Should be wifes (new owner)
Discovery 300tdi Jap Import Sundays (PXed)
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romanrob



Joined: 19 May 2006
Posts: 258
Location: SW London

PostPosted: Mon Aug 28, 2023 5:51 pm    Post subject: Reply with quote

Is it a genuine MAF? After I cleaned mine the revs ran to 2000 odd, until i reset adaptive values and all back to normal...You prob need to do that... ideally find someone with a Nanocom, or similar, closeby. But if not, then the ECM will theoretically relearn the settings if you drive it over 30 for long enough.

The GEMS bible is at GOMOG.com - a pdf for tuning GEMS Morgans, by David Poole - well worth a read if you are based in the outer reaches of Scotland
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Rob

GB065 - since 2002
Currently on my 2nd 50th RR V8 GEMS
Nanocom unlocked for GEMS


Formerly a 50th RR, 200TDi CSW, and a SIII 2.25 Petrol
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badger329



Joined: 06 Jan 2011
Posts: 160
Location: Ardnamurchan

PostPosted: Fri Sep 01, 2023 9:27 am    Post subject: MAF settings Reply with quote

what are should the adaptive settings be reading at
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127 V8 Crew cab resting (RIP)
90 CSW Should be wifes (new owner)
Discovery 300tdi Jap Import Sundays (PXed)
Discovery 3 HSE
GB 276
Orkney 520
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romanrob



Joined: 19 May 2006
Posts: 258
Location: SW London

PostPosted: Fri Sep 01, 2023 9:38 am    Post subject: Reply with quote

All the sensors have different values eg TPS reference voltage shd be c.0.6V, which wd be the first thing to check, o2 sensor voltages shd change dynamically 0-5v, cant remember MAF off the top of my head ...the David Poole pdf goes through each sensor and its readings in detail. If you cant find it on Google then pm me and I'll send it
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Rob

GB065 - since 2002
Currently on my 2nd 50th RR V8 GEMS
Nanocom unlocked for GEMS


Formerly a 50th RR, 200TDi CSW, and a SIII 2.25 Petrol
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rupert605



Joined: 09 Aug 2020
Posts: 14
Location: Royal Wootton Bassett

PostPosted: Fri Sep 01, 2023 3:15 pm    Post subject: Reply with quote

You can find it at https://www.gomog.com/allmorgan/GEMS/GEMSbyPoole.pdf - fantastic detail !

Rupert
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