How many glow plugs have failed on your Discovery 3 TDV6?
1
3%
3%
[4]
2
6%
6%
[7]
3
7%
7%
[8]
4
5%
5%
[6]
5
3%
3%
[4]
6
4%
4%
[5]
Some - Not sure how many still work though
31%
31%
[32]
None - All of mine work perfectly!
35%
35%
[37]
Total Votes: 103
Woolmeister
Member Since: 26 Mar 2007
Location: Chandler's Ford
Posts: 3457
Glow Plug Failure Poll
With more and more reports of D3s unable to start in this cold weather (especially stranded members requiring help from afar), I'm interested to find out how many of us are running about with failed glow plugs and experiencing cold starting issues as a result.
If this were the United States, I'm sure there would have been some kind of class action law suit against Land Rover as a result of so many premature failures. Thankfully, V8's don't have glow plugs...
Just because the cosy little glow plug light on the dash is illuminated doesn't mean they are working fine!
So, how many glow plugs have failed on your D3?
Steve2021 BMW iX3 Premier Edition in Carbon Black ⚡️🔌
2019 Škoda Kodiaq 2.0 Tdi 190 DSG Sportline in Quartz Grey. Excellent vehicle. Gone.
2017 Discovery Sport HSE Auto in Carpathian Grey and Ebony Leather. Modern JLR Junk. Gone.
2007 Discovery 3 TDV6 S Manual in Zermatt Silver with Ebony Cloth (143k) Gone, but now patrolling the Asia section of the West Midlands Safari Park!
Last edited by Woolmeister on 25th Feb 2013 4:54 pm. Edited 3 times in total
25th Feb 2013 3:23 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
8 years and 86k and they all worked fine.
I have no issue with the plugs failing, just Land Rover's decision (well the engine OEM's decision) to fit a plug with such a narrow fitting. The plugs are a sacrificial part but all to often the changing of a plug becomes a more major and costly event.Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 09 Mar 2007
Location: hants
Posts: 2143
As you know steve I think 5
hoping to have this confirmed shortly
If the test proves to be as simple as I think I will write up and post a simple picture and word walk thru 'how to test your glow plugs'
as an aside how many members really know
1. because above 1 or 2 deg C the car starts fine and you wouldn't know, but I assume there must be some unwelcome engine wear as a result increased warm up time
2. don't be fooled by that lovely little light on your dash - means diddly squat as far as I can tell
would have been nice if LR had written into the software a warning when they failed (easy I'm sure) - or maybe they didn't want the warranty claims Illegitimi Non Carborundum
Last edited by sacimiddx on 21st Mar 2013 9:08 pm. Edited 2 times in total
25th Feb 2013 3:31 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72787
7 years & 102k miles & all fine, AFAIK. Starts fine in subzero temps, assuming that means they are all working well.
25th Feb 2013 3:33 pm
Woolmeister
Member Since: 26 Mar 2007
Location: Chandler's Ford
Posts: 3457
I just got back from a flying visit to see sacimiddx (which prompted this poll). We had a glow plug testing session over coffee.
For a while now, I've been thinking that cold starting has not been as good as it used to be (even when it's only -2° or -3° here) and if our approach to testing the glow plugs was valid then I'm only running on 4 working ones. 2021 BMW iX3 Premier Edition in Carbon Black ⚡️🔌
2019 Škoda Kodiaq 2.0 Tdi 190 DSG Sportline in Quartz Grey. Excellent vehicle. Gone.
2017 Discovery Sport HSE Auto in Carpathian Grey and Ebony Leather. Modern JLR Junk. Gone.
2007 Discovery 3 TDV6 S Manual in Zermatt Silver with Ebony Cloth (143k) Gone, but now patrolling the Asia section of the West Midlands Safari Park!
25th Feb 2013 3:35 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72787
Does this testing need techie skills and half the engine bay being dismantled?
25th Feb 2013 3:37 pm
Woolmeister
Member Since: 26 Mar 2007
Location: Chandler's Ford
Posts: 3457
Well, that's the question, Del.
We used a multimeter and tested the resistance between the three pins in each multiplug that is connected to the top of each cylinder bank and the common ground. We were not able to test on the actual glowplugs themselves as they are not especially accessible without removing a load of other guff.
Essentially, these multi-plugs in question (one is black, the other is brown) are clipped to the top of the engine directly underneath the black plastic cover (which you have to remove to get to them). Test each pin individually.2021 BMW iX3 Premier Edition in Carbon Black ⚡️🔌
2019 Škoda Kodiaq 2.0 Tdi 190 DSG Sportline in Quartz Grey. Excellent vehicle. Gone.
2017 Discovery Sport HSE Auto in Carpathian Grey and Ebony Leather. Modern JLR Junk. Gone.
2007 Discovery 3 TDV6 S Manual in Zermatt Silver with Ebony Cloth (143k) Gone, but now patrolling the Asia section of the West Midlands Safari Park!
Last edited by Woolmeister on 25th Feb 2013 3:42 pm. Edited 1 time in total
25th Feb 2013 3:40 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
No just the removal of the cover, some intake bits and pulling off the 6 boots and test the tip to ground resistance with a long DMM probe. You can also check for 12v feed and correct current draw if you suspect a wider issue than individual plugs.
Edit - They look like this:
Land Rover - Turning Drivers into Mechanics Since 1948
Last edited by Robbie on 25th Feb 2013 4:27 pm. Edited 4 times in total
25th Feb 2013 3:41 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72787
Sounds a bit techie but might be able to do it. Now what's a multimeter??
25th Feb 2013 3:41 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
I seem to remember the crankcase breather is in the way on one side, but not too much digging to get down to the plugs. It would be easier if they were not in a bank of 3. I guess the multi-plug helps with the initial DMM checking though.
Worth mentioning the 2 relays and fusible links too, as these have been known to fail. They are dead easy to change.
Length of glowplug operation is governed by the ECT sensor (coolant) reading:
Member Since: 11 May 2008
Location: UK
Posts: 6266
50% of cars affected that is pretty !
25th Feb 2013 4:09 pm
Woolmeister
Member Since: 26 Mar 2007
Location: Chandler's Ford
Posts: 3457
And of the 50% that have not reported failures, how can they be absolutely sure that none have failed? 2021 BMW iX3 Premier Edition in Carbon Black ⚡️🔌
2019 Škoda Kodiaq 2.0 Tdi 190 DSG Sportline in Quartz Grey. Excellent vehicle. Gone.
2017 Discovery Sport HSE Auto in Carpathian Grey and Ebony Leather. Modern JLR Junk. Gone.
2007 Discovery 3 TDV6 S Manual in Zermatt Silver with Ebony Cloth (143k) Gone, but now patrolling the Asia section of the West Midlands Safari Park!
25th Feb 2013 4:12 pm
grzesiul
Member Since: 11 May 2008
Location: UK
Posts: 6266
do not make it worse lol
25th Feb 2013 4:24 pm
DG Site Moderator
Member Since: 12 Dec 2005
Location: The Gaff
Posts: 50934
grzesiul wrote:
50% of cars affected that is pretty !
Nine votes though
Of nearly 400,000 D3's made 21 year LR veteran > D2 GS 2003 > D3 S 2006 > D3 HSE 2009 > D4 HSE 2013 > D4 HSE 2015 > D5 HSE 2018 > DS HSE R-Dynamic P300e 2021
25th Feb 2013 4:30 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72787
Says he not having to worry about such things. Must admit there is something to be said for the good old new car warranty, even nicer than the new car smell.
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