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Low fuel pressure codes caused by limp mode on acceleration?
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PROFSR G
 


Member Since: 06 Mar 2017
Location: Lost
Posts: 5052

Ukraine 2009 Discovery 3 TDV6 Commercial XS Auto Stornoway GreyDiscovery 3

I think you need to have a chat with DM down in Dundee as I think I recommended earlier.

Sounds like you garage is clueless and there nobody worse to have working on these cars than a clueless mechanic.
 yµ (idµ - eAµ) ψ=mψ

 
 
Post #238004422nd Oct 2024 1:01 pm
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James M
 


Member Since: 19 Dec 2023
Location: Scotland
Posts: 26

United Kingdom 2005 Discovery 3 TDV6 XS Manual Aintree GreenDiscovery 3

Hi

Ahh yeah think you did recommend them before , I believe I sent them a very long email all about the car but got no reply, at the time I just tho I’d scared them off with my very long list of tryed and failed list of parts but maybe I’ll try phoning him instead.

Think I’ll have to start phoning ever Land Rover specialist in Britain till I find someone that knows what they are talking about ! Big Cry
  
Post #238006622nd Oct 2024 5:27 pm
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James M
 


Member Since: 19 Dec 2023
Location: Scotland
Posts: 26

United Kingdom 2005 Discovery 3 TDV6 XS Manual Aintree GreenDiscovery 3

So yesterday I finally collected my car from the Land Rover dealer now 100% fixed after 10 months this year and 4 months last year ,fault originally started in 2021 but now it’s finally fully fixed no more limp mode on acceleration! Very Happy
Just when the dealer was about to completely give up after changing the high pressure pump again which got the car running about but after test driving it was driving worse ! They described it was badly hunting and badly struggling to acceleration, they’d just really had enough of it but they wanted to have one more look and check fault codes , not quite sure what they found but they told me the next day that they had swapped the fuel pressure sensor AGAIN ! From an abandoned car , and then the workshop control manager and a driver took it back out and said it’s “ running mint “ big improvement no more hunting , not sluggish in the slittiest , and no limp mode no matter how hard they thrashed it.
And after 6 more test drives they were happy to return it back to me.

It has been such a weird long story but looks like I was sold a faulty VDO pump from a Land Rover parts specialist in 2021 / start of all my problems which I then replaced low pressure pump and fuel rail sensor pulse so much more but I did put the old sensor back in when it didn’t make a difference cause it was just a cheap ones then fast forward to 2023 when the dealer replaced the high pressure pump again then car was perfect for about 30 miles before throwing up low pressure codes again , then 2024 when it was back this year they did swap the fuel rail sensor from that abandoned car but then the next day the car completely cut out and whould not restart so they swapped the sensor back thinking that was the reason but of course later found the second high pressure pump had completely failed so they replaced that and clean and flushed the hole fuel system looking for dirt or debris but found nothing and of course fitted third pump car rested but then drove terrible until swapped that other sensor back on and car has been perfect ever since.

So two faulty components no wonder it was very confusing to understand also who’d believe two faulty pump so far in between with no explanation to why they wouldn’t work properly, not sure at what point in between 2021 and now October 24 the fuel rail sensor become faulty but with that length of time it could of happed at any time . But with the sensor being swapped twice in the past it definitely looks like it was the HP pump and the sensor at some point one almost hiding behind the other

But yeah I’m so delighted that this is finally done and fixed and to be honest my local Land Rover dealer has looked after me so well yes 15 months is a bit ridiculous time to have it there in total by they are very busy and it was a realy head scratcher that they couldn’t devote too much time to at once , well I say not to much time but the manager revealed that intotal for diagnosing replacing parts , mot work they where about the 100! Hour mark !!! At £220 an hour I’ll let you do the math to what my bill should of been , but I can confirm I payed a very small amount of that parts at cost prise and labour I did get charged for was only at £120 and hour so couldn’t really ask for better , well only if they did it quicker Whistle

Big thanks to everyone that helped with there thoughts and I’m so glad I could post a fix unlike so many other threads that never have an ending let along a happy one !
Also thank to Disco-Mike at MMP for answering my call and giving his advice ,funnily enough he’d seen my posts about it.

Thanks again James
  
Post #23808151st Nov 2024 8:04 pm
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PROFSR G
 


Member Since: 06 Mar 2017
Location: Lost
Posts: 5052

Ukraine 2009 Discovery 3 TDV6 Commercial XS Auto Stornoway GreyDiscovery 3

So you're sorted! Well done and thanks for posting the final outcome which unfortunately so many do not. Thumbs Up
 yµ (idµ - eAµ) ψ=mψ

 
 
Post #23808161st Nov 2024 8:27 pm
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