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Low power below 2000 rpm and excessive mpg.
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spanner54cf
 


Member Since: 08 Dec 2009
Location: leicester
Posts: 3

2008 Discovery 3 TDV6 XS Manual Unknown ColourDiscovery 3
Low power below 2000 rpm and excessive mpg.

Hi all, my 2008 disco 3 diesel manual gearbox blew the plastic inlet manifold. Which was replaced ever since then the engine lacks power at low revs and the fuel economy has gone through the roof from 26-28 mpg to just 22 mpg if I drive steady. It's been in the garage everything tests ok. The injectors are in there normal test range I've been told. Fuel filters been changed to eliminate that. I've been told the next course of action is to send the injectors away to be fully tested on a diagnostic machine. Can anyone help. Thanks chris
  
Post #200359725th Nov 2018 8:57 am
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10337

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

EGR's ? Did they cause the inlet manifold fault in the first place ?
  
Post #200362925th Nov 2018 11:39 am
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spanner54cf
 


Member Since: 08 Dec 2009
Location: leicester
Posts: 3

2008 Discovery 3 TDV6 XS Manual Unknown ColourDiscovery 3

Hi Pete
No,It was split pipe. Can't remember if it was to the inlet manifold or not. The egr have tested ok.
Cheers
Chris
  
Post #200364125th Nov 2018 12:39 pm
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carbore
 


Member Since: 06 Apr 2016
Location: Cornwall
Posts: 545

United Kingdom 2009 Discovery 3 TDV6 HSE Auto Zermatt SilverDiscovery 3

Just a quick thing, have you checked your MAP sensor is cludged up. Possibly what you say is a bit more extreme than the usual experience when they are, but mine was all yucky and the car was just a little less eager and couple of MPG down.

Simple to check, and clean with a cloth and a bit of electrical contact cleaner spray, so worth a look
 Disco 3: Lotus Elise S1: Ferguson T20: Audi A2  
Post #200368525th Nov 2018 5:00 pm
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spanner54cf
 


Member Since: 08 Dec 2009
Location: leicester
Posts: 3

2008 Discovery 3 TDV6 XS Manual Unknown ColourDiscovery 3

Hi
Will check and clean. Worth a try. Hopefully it is that.
Cheers
Chris
  
Post #200369025th Nov 2018 5:10 pm
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