Just spotted that there was a small broken linkage on the induction end of the engine. Service box tells me that this is part of the Intake Manifold Air Distributor system.
A web search quickly revealed what it does. Looks like a bit of a beast to fix though - anyone have any experience of changing the diaphragm?
2.2 HDi Intake Manifold Air Distributor - linkage broken
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2.2 HDi Intake Manifold Air Distributor - linkage broken
Remember - it only takes a few inches of water to drown a 406 don't make the same mistake I made! The V6 Exec is no more.
406 Coupe S HDi
PP2000 clone interface
406 Coupe S HDi
PP2000 clone interface
- Doggy
- Mod with a 2.2 HDi, De-Fapped!
- Posts: 10710
- Joined: Mon Oct 13, 2008 11:49 pm
- Location: Northants
Re: 2.2 HDi Intake Manifold Air Distributor - linkage broken
Changed the complete actuator on my last one, (on mine the plastic rod-end-bearing-substitute had snapped off). You can't by a diaphragm alone, AFAIK.
Not too bad a job, access is easier if you dismount the throttle position sensor & its mounting bracket, a l-o-n-g 1/4" drive extension helps as well......
IIRC the part was between £20-£25 a couple of years ago.
Short term, you can make do with moving the flaps to whichever position gives the best power / throttle response and leaving it there, (it doesn't spring or self-return).
Not too bad a job, access is easier if you dismount the throttle position sensor & its mounting bracket, a l-o-n-g 1/4" drive extension helps as well......
IIRC the part was between £20-£25 a couple of years ago.
Short term, you can make do with moving the flaps to whichever position gives the best power / throttle response and leaving it there, (it doesn't spring or self-return).
2002 HDi 2.2 Exec Estate, (2008-12) (wonderful)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)
Re: 2.2 HDi Intake Manifold Air Distributor - linkage broken
Cheers - it is the exact same failure on mine. I was going to wire tie the two parts together in the moring to see if it makes any difference.
Remember - it only takes a few inches of water to drown a 406 don't make the same mistake I made! The V6 Exec is no more.
406 Coupe S HDi
PP2000 clone interface
406 Coupe S HDi
PP2000 clone interface
- Doggy
- Mod with a 2.2 HDi, De-Fapped!
- Posts: 10710
- Joined: Mon Oct 13, 2008 11:49 pm
- Location: Northants
Re: 2.2 HDi Intake Manifold Air Distributor - linkage broken
Reference Description Price - VAT Price + VAT Total + VAT
000036387 DIAPHRAGM 18.35 GBP 22.02 GBP 22.02 GBP

000036387 DIAPHRAGM 18.35 GBP 22.02 GBP 22.02 GBP

2002 HDi 2.2 Exec Estate, (2008-12) (wonderful)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)