Hi
I'm looking for the part number for an Air Doser for a 406 2.2 HDi (DW12TED4) This link gives more info:
https://www.peugeotcentral.co.uk/ftopic-9360.html
I'm having intermittent acceleration issues on the car and according to the link below someone had an issue with intermittent acceleration and cleaned out the air doser which fixed the issue (this was on a 2.0 HDi)
viewtopic.php?t=16658
Thanks
Air Doser
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- Doggy
- Mod with a 2.2 HDi, De-Fapped!
- Posts: 10710
- Joined: Mon Oct 13, 2008 11:49 pm
- Location: Northants
Re: Air Doser
The 2.2 is different.
You can eliminate the air doser as the cause by disconnecting and plugging the vacuum pipe from the solenoid valve to the air doser vacuum capsule.
The flap return spring will force the air doser into the open, intercooler to manifold position.
(If you want to verify the position, remove the pipe from the intercooler and check the flap).
I doubt it's your problem, but this will prove it either way at no cost
You can eliminate the air doser as the cause by disconnecting and plugging the vacuum pipe from the solenoid valve to the air doser vacuum capsule.
The flap return spring will force the air doser into the open, intercooler to manifold position.
(If you want to verify the position, remove the pipe from the intercooler and check the flap).
I doubt it's your problem, but this will prove it either way at no cost
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: Air Doser
Thanks.
The thing about the flat spot in acceleration is that it really only happens at lower speeds and going uphill. Through the day, the acceleration gets better than say first thing in the morning.
With someone mentioning on one of the quoted threads above "Just for archives, I remedied the problem by cleaning out the Air Doser assembly, as it was intermittently sticking shut!"
Could that explain getting better acceleration through the day - an intermittent air doser sticking shut? The only other thing I can think of is the MAF as I've replaced: swirl flap, swirl flap diaphragm, airbox electrovalve. The three solenoid valves on the bulkhead have been checked / replaced where required.
The thing about the flat spot in acceleration is that it really only happens at lower speeds and going uphill. Through the day, the acceleration gets better than say first thing in the morning.
With someone mentioning on one of the quoted threads above "Just for archives, I remedied the problem by cleaning out the Air Doser assembly, as it was intermittently sticking shut!"
Could that explain getting better acceleration through the day - an intermittent air doser sticking shut? The only other thing I can think of is the MAF as I've replaced: swirl flap, swirl flap diaphragm, airbox electrovalve. The three solenoid valves on the bulkhead have been checked / replaced where required.
2003, '03' 406 Executive 2.2hdi 136.
- Doggy
- Mod with a 2.2 HDi, De-Fapped!
- Posts: 10710
- Joined: Mon Oct 13, 2008 11:49 pm
- Location: Northants
Re: Air Doser
I would try disabling the egr and if it's effective blank it off.
In my experience this gives you much improved throttle response and low speed pull, particularly after a period on the overrun.
In my experience this gives you much improved throttle response and low speed pull, particularly after a period on the overrun.
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)