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chiefstoker

Member Since: 11 Oct 2010
Location: Weston-super-Mud
Posts: 897

Loss of power

Sorry but its actually not a problem with my Defender, but the wife's Rav4. Just wondered if anyone could shed any light on this issue.

These are the symptoms .. driiving around fine, got onto the motorway and after about 10mins of doing about 70mph I had to decelerate so took my foot off the gas, then when I went to put my foot down again there would be no power and the car would very slowly loose some speed. Pulled into the services and down through the gearbox and then the car drives fine, back onto the motorway and no further issues. This has happened twice now?

My thoughts are, blocked fuel filter, dirty egr valve, faulty throttle sensor ??

Anyone?

cheers Dan 2005 TD5 90 Hard Top

Beer 'n Sex 'n Chips 'n Gravy

17th Sep 2012 9:05pm

T1G UP

Member Since: 08 Dec 2009
Location: Bath
Posts: 3101

2011 Defender 110 Puma 2.4 XS CSW Orkney Grey

fuel...

17th Sep 2012 9:06pm

chiefstoker

Member Since: 11 Oct 2010
Location: Weston-super-Mud
Posts: 897

Diesel, sainsburys...... 2005 TD5 90 Hard Top

Beer 'n Sex 'n Chips 'n Gravy

17th Sep 2012 9:20pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20921

Try Shell fuel or Esso or the like permanently and no supermarket fuel. IF you still get it happen at some point you can then rule that out as being an issue at the very least.

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17th Sep 2012 9:54pm

T1G UP

Member Since: 08 Dec 2009
Location: Bath
Posts: 3101

lack of it! sounds like it can't keep up with the supply a higher engine speeds. i guess its ok around town etc?

17th Sep 2012 9:56pm

noworries4x4

Member Since: 24 Dec 2010
Location: Newton Abbot Devon
Posts: 1196

Air flow meters can be a problem on the D4D engines, check for fault codes with an obd reader, those codes on jap systems rarely bring on the management light. I plugged in the reader on my wifes rav and there was over a page of faults not ever bringing the light on erased them all and the car now flies. If everything is under control you are not going fast enough.

Every Day MY 20 Discovery 5 Commercial Workshop and Escort Vehicle
Weekends MY 12 L322 4.4 TDV8 Vogue
Series 1 80" 3ltr 6cyl with overdrive
No Worries 4X4

17th Sep 2012 10:44pm

chiefstoker

Member Since: 11 Oct 2010
Location: Weston-super-Mud
Posts: 897

Thanks for your input chaps

2005 TD5 90 Hard Top

Beer 'n Sex 'n Chips 'n Gravy

18th Sep 2012 6:08pm

rossy

Member Since: 29 Nov 2010
Location: Co. Roscommon
Posts: 1296

2011 Defender 110 Puma 2.4 CSW Stornoway Grey

sounds identical to the problem I had with a Mitsubishi Outlander. It turned out to be a gunged up MAP sensor. This happened twice within a year and after 2 replacements I cured the problem by using 2 stroke oil in the diesel which must have kept everything clean

18th Sep 2012 9:30pm

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