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22900013A

Member Since: 23 Dec 2010
Location: Oxfordshire
Posts: 3153

2011 Defender 110 Puma 2.4 USW Keswick Green

Erratic idle on start up.

I went to work in my 110 today, from home to work, no issues. Went out in the lorry for a few hours, got back to depot and unloaded, ready for home...jumped in the 110 and the rev counter was all over the shop when I fired up, and you could hear the engine sounded "off". It drove fine but I could hear a bit of a high-pitched whine on occasion that I have not heard before.
By the time I had got home (about 2.5 miles) the idle had settled down.

Any ideas what this could be?

3rd Mar 2012 8:35pm

MK

Member Since: 28 Aug 2008
Location: Santiago
Posts: 2480

2007 Defender 110 Puma 2.4 SW Chawton White

Pressure fuel sensor, loosen speedo wires into the Gearbox/Tbox?

Mine had the latter problem. Puma 110" SW

.............................................................
Earth first. Other planets later

3rd Mar 2012 8:49pm

Landyrover

Member Since: 04 Jul 2011
Location: Northampton
Posts: 33

2007 Defender 90 Puma 2.4 XS CSW Java Black

I had this problem and it was the EGR valve. It didn't log a fault code but the engineer thought the self-cleaning routine on engine switch off was noisy and that this was the likely problem. New valve was fitted and problem went. Self-clean routine almost silent compared to original one.

Hope this helps.

Nick "You know, Marge, mud is nothing more than wet dirt!" (Homer Simpson)

20th Mar 2012 12:24am

22900013A

Member Since: 23 Dec 2010
Location: Oxfordshire
Posts: 3153

You know what, i've just realised I havn't been hearing the chucka-chucka noise for a while. Better let my dealer know eh? It should still do this even after a short journey, yes?

20th Mar 2012 10:55am

Zagato
Site Supporter

Member Since: 08 Jan 2011
Location: Billingshurst West Sussex
Posts: 5026

Yes

20th Mar 2012 1:31pm

22900013A

Member Since: 23 Dec 2010
Location: Oxfordshire
Posts: 3153

I sent them an email...

20th Mar 2012 2:10pm

Landyrover

Member Since: 04 Jul 2011
Location: Northampton
Posts: 33

For what it's worth, mine got noisier, not quiter? Best to get dealer to verify though... "You know, Marge, mud is nothing more than wet dirt!" (Homer Simpson)

21st Mar 2012 12:52am

22900013A

Member Since: 23 Dec 2010
Location: Oxfordshire
Posts: 3153

Is there any other way to identify it?

21st Mar 2012 11:07am

22900013A

Member Since: 23 Dec 2010
Location: Oxfordshire
Posts: 3153

Had a chat with my service dept yesterday, basically they say unless there is an engine fault light showing there is nothing they can do, as warranty only covers failure, not failing. They also said its not unusual for the EGR to quieten down after a while when it beds in.
Does this sound right?

23rd Mar 2012 11:18am

Landyrover

Member Since: 04 Jul 2011
Location: Northampton
Posts: 33

When my new valve was fitted it was quiet doing the self-cleaning routine straight away. The old one was very noisy in comparison. This was replaced under warranty - no lights on the dash, and no fault codes, no problem with erratic revving once the new one was fitted... "You know, Marge, mud is nothing more than wet dirt!" (Homer Simpson)

23rd Mar 2012 9:39pm

22900013A

Member Since: 23 Dec 2010
Location: Oxfordshire
Posts: 3153

Landyrover wrote:
When my new valve was fitted it was quiet doing the self-cleaning routine straight away. The old one was very noisy in comparison. This was replaced under warranty - no lights on the dash, and no fault codes, no problem with erratic revving once the new one was fitted...

Do you know how it was considered a warranty issue then?

23rd Mar 2012 9:43pm

dgardel

Member Since: 30 Nov 2008
Location: Veneto (Heart & Head)
Posts: 3586

try to disconnect the electrical connector of the EGR valve (with ignition OFF).

If the erratic idle will go...........

Ciao Discovery 5 td6 HSE Stornoway Gray Outback Engineering Limited Edition

IID Pro MV License

23rd Mar 2012 11:33pm

Landyrover

Member Since: 04 Jul 2011
Location: Northampton
Posts: 33

I just complained about it and the dealer - Stratstone, Milton Keynes - replaced it, no hassle... "You know, Marge, mud is nothing more than wet dirt!" (Homer Simpson)

24th Mar 2012 2:15am

22900013A

Member Since: 23 Dec 2010
Location: Oxfordshire
Posts: 3153

Interesting. I must say I have noticed no change in performance, it still drives the same. Just the occasional erratic idle. It was fine today on the two occasions I used it so its intermittent whatever it is.

24th Mar 2012 7:06pm

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