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doublea



Member Since: 12 Jul 2011
Location: Aberdeenshire
Posts: 495

Scotland 2016 Defender 110 Puma 2.2 Adventure Phoenix Orange
Noise on starting from cold - 2.2 Puma 29K
Over the past six weeks or so, the 110 has been making a whining noise from the front of the engine, most noticeable in front of the radiator.

It only happens on the first start of the day and becomes intermittent then stops after about 120 seconds. The time has been a little less when the weather has been slightly warmer. It's like a low horn noise.

Any ideas?

Thanks, Doublea

https://1drv.ms/v/s!Ar-D0Wz_PaxDkk9Urgv3QexGfIu9

PS not sure of the best way to post videos, hopefully this works. Current Steeds:
2015 110 UW in Grasmere Green
2003 BMW F650 the Hack
2000 Elise
1992 Ducati 888 (no longer in bits, yahoo)
1990 TDR 250 (in bits again)
1988 TDR 250 (no longer in bits) and for sale
Post #695105 21st Mar 2018 12:12am
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Balvaig



Member Since: 19 Feb 2016
Location: Fife
Posts: 731

Scotland 2016 Defender 90 Puma 2.2 Landmark LE Corris Grey
Possibly a loose or worn serpentine belt. Often screech at startup.
Post #695137 21st Mar 2018 8:14am
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Tdi4



Member Since: 24 Oct 2014
Location: Houten
Posts: 513

Netherlands 2008 Defender 110 Puma 2.4 CSW Stornoway Grey
Also check the tensioner arm and the pulleys (and their bearings). The normal service interval of the serpentine belt is around 60k miles so at 29k miles, it shouldn't be loose and or worn. a defender from 1984 pretending to be a puma with a touch of Range Rover
Post #695150 21st Mar 2018 9:23am
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doublea



Member Since: 12 Jul 2011
Location: Aberdeenshire
Posts: 495

Scotland 2016 Defender 110 Puma 2.2 Adventure Phoenix Orange
Showed the video to the mechanic when the 110 was in for end of warranty check - he reckoned it was the viscous fan was at fault. Current Steeds:
2015 110 UW in Grasmere Green
2003 BMW F650 the Hack
2000 Elise
1992 Ducati 888 (no longer in bits, yahoo)
1990 TDR 250 (in bits again)
1988 TDR 250 (no longer in bits) and for sale
Post #695795 23rd Mar 2018 11:12pm
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zsd-puma



Member Since: 09 Aug 2016
Location: Kent
Posts: 2720

United Kingdom 2010 Defender 110 Puma 2.4 USW Santorini Black
Quote:
The normal service interval of the serpentine belt is around 60k miles so at 29k miles


10 years or 120k miles on a Puma. Doesn't hurt to do it sooner though.

Quote:
Showed the video to the mechanic when the 110 was in for end of warranty check - he reckoned it was the viscous fan was at fault.

I'd agree with the mechanic, does sound more like a faulty fan coupling than a belt slipping. Could be the electric A/C fan too. You could unplug the A/C fan and see if the noise stops. But if it's under warranty why bother, just let the garage do it. Wink
Post #695807 24th Mar 2018 12:00am
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20408

United Kingdom 
I done mine at 60k.

Mine slipped on start up occasionally in cold weather, causing a small screech.
Since changing the belt it's perfect now.

Any chance any oil or slippery substance has contaminated the mating surfaces? I guess it's hard to tell though. $W33T $0U7H3RN $UG4R
🇬🇧🏴󠁧󠁢󠁥󠁮󠁧󠁿🏴󠁧󠁢󠁷󠁬󠁳󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🇮🇪🇺🇸⛽️🛢️⚙️🧰💪
Post #695808 24th Mar 2018 12:08am
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doublea



Member Since: 12 Jul 2011
Location: Aberdeenshire
Posts: 495

Scotland 2016 Defender 110 Puma 2.2 Adventure Phoenix Orange
The viscous fan coupling was replaced last March under warranty. By then the weather warned up and the noise was gone.

With the recent colder weather, the low horn noise has returned, so it wasn't the fan. Given that it goes away within a few minutes of start, could it be the water pump, which is warmed fairly quickly by the engine firing? Current Steeds:
2015 110 UW in Grasmere Green
2003 BMW F650 the Hack
2000 Elise
1992 Ducati 888 (no longer in bits, yahoo)
1990 TDR 250 (in bits again)
1988 TDR 250 (no longer in bits) and for sale
Post #756097 3rd Feb 2019 11:03pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20408

United Kingdom 
It could be the bearing but typically it's belt slip, after a short time the belt its self would warm I would have thought and grip more and thus noise gone.
I would change the seppentine belt, they are not hard to change no special tools needed at all.

Just be careful of fingers with tensioner that's about all. Thumbs Up

Then you could rule it out if not, for little cost. $W33T $0U7H3RN $UG4R
🇬🇧🏴󠁧󠁢󠁥󠁮󠁧󠁿🏴󠁧󠁢󠁷󠁬󠁳󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🇮🇪🇺🇸⛽️🛢️⚙️🧰💪
Post #756107 4th Feb 2019 12:02am
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