Swirl flaps

DavJen · Apr 10th, 2022, 18:47

Hi, all can anyone tell me if the engine on my 2010 , 200 bhp xc90 needs to have the swirl flaps working?
I had a look today after cleaning up the engine bay to find the rod from the stepper was not connected at the engine end!
The car performs very well, starts first time every time and pulls like a train.
Hence my question.
(I presume they are designed to do something!)
Your knowledge gratefully received.
TIA, Dave

rxtian · Apr 10th, 2022, 20:12

Hi Dave

Your swirl flaps are probably in the open position, so full power performance isn’t affected. When the same happened to my D5 I found the part/low throttle running much improved after repair.

The swirl flaps cause turbulence at low rpm to better mix the fuel and air.

Familyman 90 · Apr 10th, 2022, 21:29

I didn't realise rhe Euro 5 had swirl flaps. Mind you, I never had any reason to look when we had ours. You live and learm.

DavJen · Apr 11th, 2022, 18:14

I only realised after seeing the connecting rod loose, and after seeing other posts about it and saying how to put it back on.
Mind you it looks quite awkward for me to do as I only have 1 arm......
Will nip it down to the garage and let them do it.
Cheers, Dave

Apr 10th, 2022, 18:47	#1
DavJen Junior Member Last Online: May 23rd, 2023 18:33 Join Date: Feb 2022 Location: Warton	Swirl flaps Hi, all can anyone tell me if the engine on my 2010 , 200 bhp xc90 needs to have the swirl flaps working? I had a look today after cleaning up the engine bay to find the rod from the stepper was not connected at the engine end! The car performs very well, starts first time every time and pulls like a train. Hence my question. (I presume they are designed to do something!) Your knowledge gratefully received. TIA, Dave

Apr 10th, 2022, 20:12	#2
rxtian Senior Member Last Online: Today 12:01 Join Date: May 2011 Location: Southampton	Hi Dave Your swirl flaps are probably in the open position, so full power performance isn’t affected. When the same happened to my D5 I found the part/low throttle running much improved after repair. The swirl flaps cause turbulence at low rpm to better mix the fuel and air. __________________ 2015 V60 R-Design D4 (VEA) 2009 C30 R-Design 1.6 (petrol)

Apr 10th, 2022, 21:29	#3
Familyman 90 The Brit Brick Last Online: Aug 13th, 2023 09:39 Join Date: Jul 2021 Location: Warwickshire	I didn't realise rhe Euro 5 had swirl flaps. Mind you, I never had any reason to look when we had ours. You live and learm. __________________ *2005 C70 2.4T Collection convertible. 40,000 mile sunny day toy.*

Apr 11th, 2022, 18:14	#4
DavJen Junior Member Last Online: May 23rd, 2023 18:33 Join Date: Feb 2022 Location: Warton	I only realised after seeing the connecting rod loose, and after seeing other posts about it and saying how to put it back on. Mind you it looks quite awkward for me to do as I only have 1 arm...... Will nip it down to the garage and let them do it. Cheers, Dave

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