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BogMonster



Member Since: 05 Feb 2008
Location: Stanley
Posts: 400

Falkland Islands 2015 Defender 110 Puma 2.2 USW Corris Grey
Squeal on acceleration
Hey ho, it's a Defender so fix one thing and another pops by....

Since fitting the remap from BAS and getting the other work done, it's developed an occasional squeal on acceleration. Most noticeably off the mark from a cold start, but occasionally pops up at other times - but it is not there all the time. It sounds like air/gas to me, not belts or mechanical.

Having looked around including reading a few threads on here, I'm thinking the manifold to turbo gasket, maybe the remap runs a higher turbo boost and that creates more exhaust back pressure, it has only started since the remap. However it seems to be left side of the engine bay from sitting in the driver seat, are there any other known issues that cause similar sounds? The problem is that it won't do it unless under load, so I can't easily diagnose it.

I see there's a beefed up gasket from Nakatenanga but according to the eBay listing it's only suitable for 2.4 engines, what's the solution for the same problem on a 2.2 engine? ---
2006 Defender 110 SW 300Tdi • 2011 Ford Ranger XLT crewcab • 2015 Defender 110 Station Wagon Utility TDCi
Post #747966 29th Dec 2018 7:38pm
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BogMonster



Member Since: 05 Feb 2008
Location: Stanley
Posts: 400

Falkland Islands 2015 Defender 110 Puma 2.2 USW Corris Grey
Anybody got ideas on this please? Still there mainly accelerating in 2nd/3rd, and it is still not possible to reproduce it unless the vehicle is moving. I'm not convinced it may not be there at higher speeds as well but road noise from MTs takes over. ---
2006 Defender 110 SW 300Tdi • 2011 Ford Ranger XLT crewcab • 2015 Defender 110 Station Wagon Utility TDCi
Post #750048 8th Jan 2019 7:15pm
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camelman



Member Since: 27 Feb 2013
Location: Peak District
Posts: 3367

United Kingdom 
Are you sure it's not the fan belt slipping?
Post #750049 8th Jan 2019 7:18pm
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BogMonster



Member Since: 05 Feb 2008
Location: Stanley
Posts: 400

Falkland Islands 2015 Defender 110 Puma 2.2 USW Corris Grey
I hadn't considered it, would have thought it was unlikely on a polyvee belt with just 10k miles on it, are they prone to this? ---
2006 Defender 110 SW 300Tdi • 2011 Ford Ranger XLT crewcab • 2015 Defender 110 Station Wagon Utility TDCi
Post #750051 8th Jan 2019 7:22pm
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5663

2006 Defender 110 Td5 USW Zermatt Silver
Exhaust gasket would be my thought, and the uprated gasket are only a temp fix from my experience.
Post #750054 8th Jan 2019 7:27pm
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BogMonster



Member Since: 05 Feb 2008
Location: Stanley
Posts: 400

Falkland Islands 2015 Defender 110 Puma 2.2 USW Corris Grey
That was my thought but the uprated exhaust gasket doesn't seem to exist for the 2.2, so I wondered if it wasn't needed. It started after the clutch and shaft were done (which was about a week after the remap) so maybe the downpipe got a smack when the gearbox was being taken out. ---
2006 Defender 110 SW 300Tdi • 2011 Ford Ranger XLT crewcab • 2015 Defender 110 Station Wagon Utility TDCi
Post #750057 8th Jan 2019 7:35pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17337

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Split intercooler pipe or split intercooler.
Post #750106 8th Jan 2019 10:52pm
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