Air Intake Auto Monitoring

[ukwide]

Hi all, I have 57 plate C5 2.2 hdi VTX+ with just 40k on the clock. Every now and then the RT3 screen displays the message 'Air Intake Auto Monitoring'. There are no warning lights and driving is not affected.

 

I don't have the handbook, so what does it mean?

 

Any help would be greatly appreciated.

 

Cheers

 

Gary

[coastline taxis]

Variable swirl air inlet

 

The variable swirl system increases the rotational movement of the air in the combustion chamber to ensure that the fuel is completely burned. This ensures high performance and low emissions.

The air intake system includes a helical air duct, causing the air flow to rotate into a vortex (swirl), and a tangential duct providing an axial flow. The tangential duct is fitted with a butterfly valve that opens when the engine reaches a preset speed (2,100 rpm at 80 °C) and the injection rate reaches a preset flowrate (40 mg per cycle).The formation of particles at low engine speeds is reduced as a result of the improved fuel / air mixing in the swirl. At higher engine speeds, more air flows through the tangential duct and the swirl is reduced, thereby optimising airflow into the combustion chamber.The piston tops are machined to provide valve clearances, a central dome and the cavity needed to create the swirl.

The injectors, located centrally in the combustion chamber, ensure uniform fuel spray.

 

Thats the technical stuff. Now in simple terms the car is fine and is just being polite by telling you what its doing

[ukwide]

Variable swirl air inlet

 

The variable swirl system increases the rotational movement of the air in the combustion chamber to ensure that the fuel is completely burned. This ensures high performance and low emissions.

The air intake system includes a helical air duct, causing the air flow to rotate into a vortex (swirl), and a tangential duct providing an axial flow. The tangential duct is fitted with a butterfly valve that opens when the engine reaches a preset speed (2,100 rpm at 80 °C) and the injection rate reaches a preset flowrate (40 mg per cycle).The formation of particles at low engine speeds is reduced as a result of the improved fuel / air mixing in the swirl. At higher engine speeds, more air flows through the tangential duct and the swirl is reduced, thereby optimising airflow into the combustion chamber.The piston tops are machined to provide valve clearances, a central dome and the cavity needed to create the swirl.

The injectors, located centrally in the combustion chamber, ensure uniform fuel spray.

 

Thats the technical stuff. Now in simple terms the car is fine and is just being polite by telling you what its doing

 

Excellent, as I was reading this I was fashioning my unused tow rope into a noose for the inevitable drop and swing, then read the last line, lol. Brilliant answer and very clever technical stuff, chhers. Gary

[DaveHerns]

Is this the twin turbo 170 BHP turbo engine ?

[ukwide]

Is this the twin turbo 170 BHP turbo engine ?

 

Its the 2.2 173 bhp engine, not sure if it's bi-turbo, if it only has one it still shifts very well under power :-)

 

Gary

[ukwide]

Variable swirl air inlet

 

The variable swirl system increases the rotational movement of the air in the combustion chamber to ensure that the fuel is completely burned. This ensures high performance and low emissions.

The air intake system includes a helical air duct, causing the air flow to rotate into a vortex (swirl), and a tangential duct providing an axial flow. The tangential duct is fitted with a butterfly valve that opens when the engine reaches a preset speed (2,100 rpm at 80 °C) and the injection rate reaches a preset flowrate (40 mg per cycle).The formation of particles at low engine speeds is reduced as a result of the improved fuel / air mixing in the swirl. At higher engine speeds, more air flows through the tangential duct and the swirl is reduced, thereby optimising airflow into the combustion chamber.The piston tops are machined to provide valve clearances, a central dome and the cavity needed to create the swirl.

The injectors, located centrally in the combustion chamber, ensure uniform fuel spray.

 

Thats the technical stuff. Now in simple terms the car is fine and is just being polite by telling you what its doing

 

 

Hi, after all this, I am now having a small problem. I have suddenly stopped getting this message (I used to get it every Friday driving back from Manchester to Salisbury), 2000 miles ago I was travelling to Manchester and 1/2 way through the journey got the 'Depollution System Fault' message and the car went into Limp Mode.

 

Called RAC who cleared the fault code (on their machine it read P00038) which was 'low fuel rail pressure' although their laptop was showing the correct pressure in the fuel rail.

 

This morning had exactly the same problem............... The car was serviced on Friday (20k service) by a reputable Citroen Specialist. I told them of the 1st problem with the Depollution System Fault and they checked the fluid level for the FAP filter which was okay!!!

 

So whats the problem and what's the cure?

 

Any help would be gratefully received.

 

Cheers

 

Gary

[ukwide]

Hi all, happy new year, just to keep you up to date on the problem, the Dealer fitted new fuel filter and it seems to have cured the issue............

 

cheers

 

Gary

[ukwide]

Hi all, happy new year, just to keep you up to date on the problem, the Dealer fitted new fuel filter and it seems to have cured the issue............

 

cheers

 

Gary