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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10335

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

Best to clear codes
And see what comes back first
And what comes back when light on


Lean codes can be leaks in air intake

May need Thermostat too
  
Post #207811323rd Aug 2019 6:46 pm
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AL_P
 


Member Since: 17 Feb 2017
Location: London
Posts: 161

United Kingdom 2005 Discovery 3 4.4 V8 HSE Auto Bonatti GreyDiscovery 3

Thermostat was replaced a little while ago as was the expansion tank, may be the lead or lack of coolant in the water, I’ve read that makes the ball sensor unpredictable.

I have been doing a bit of research which does suggest air leak.
 BT Gap IID  
Post #207811423rd Aug 2019 6:54 pm
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geoffsnook
 


Member Since: 13 Jun 2014
Location: south wales
Posts: 3169

Wales 

Mine was the oil filler cap not seated properly therefore letting more air in to the system or so i thought whistle:
 Discovery 3 se gone
Range rover sport supercharged here:) 
 
Post #207811523rd Aug 2019 6:59 pm
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Globetrotter448
 


Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1771

Australia 2007 Discovery 3 4.0 V6 Petrol SE Auto Java BlackDiscovery 3

First two error possibly require the MAF sensor to be cleaned
  
Post #207816023rd Aug 2019 11:05 pm
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