C5 2.2 Hdi 173 Bhp Dpf 2009 - Loss Of Power

[cassius1218]

Hello everyone! yesterday i have made a full service on the car, changing all filters. I ve also added Total Ineo Ecs 5w30 oil, plus some profesional diesel additives. Now i am no expert in cars.....but one thing really made me mad. After i got out of the service... the car got very lazy.... not responsive when accelerating.....and seemd that it lost at least 100bhp out of 173. May i say that  there are no lights flashing on the dash board. Have i been scamed? maybe have they put inside a different oil..... cheaper? Is it  maybe the additives cleaning the dirt inside the tank and blocking the DPF ? i am very happy with the car everything worked fine till now....what should be fault here?

[qman3428]

Not really enough information but if the oil level on the dip stick is right then its not that. The DPF would show warning lights so I dont think it is that either. If you changed the fuel filter have you made sure the hand pump is hard and enough fuel is being delivered. An air lock would cause the symptoms you have. Failing that look around the engine bay, have they disturbed anything?

[cassius1218]

everything seems fine around engine bay......but...there is aprox 1 cm more fuel then the max level on the dipstick......probably they put half of litre more inside. the hand pump.....it s not very hard....and when engine off there is an air bubble size of 1 inch. it disapears when i start the engine though

[Randombloke]

You need to check under the bonnet,it sounds as if they have disconnected the MAP or MAF sensors to do the service and have not connected them back up again.

 

Had this on a 406 and it made the car quite sluggish.

 

The MAF is on the air intake, I don't know where the MAP is.

 

MAF=Mass Air Flow

MAP=Manifold absolute pressure.

 

MAF tells the ECU how much air is going into the engine, and MAP tells the ECU how much turbo boost there is.

 

Coastline will be along soon with the correct answer.

[paul.h]

The high engine oil level on the engine dipstick needs to be sorted. A high oil level on a diesel can cause the engine to run away and not stop when switched off since the engine can run on the oil as a fuel. There have been a number of cases reported recently in the Car Mechanics magazine, some of which have resulted in engine damage if not stopped by such as stalling it on the clutch.

 

Maybe if there was some dirt inside the fuel tank and if the additives have dislodged it, then it could have blocked the diesel filter at the engine end but I would expect if this was the case it would take some time to happen. There was a report once of a van that had water in the diesel that formed a jelly that blocked the filter and this is apparently common on boats.

 

Most likely cause of the poor performance that I would look for would be a sensor or pipe disconnected as part of the service near one of the filters that has not been reconnected or maybe an air leak around the air filter. I think though you should go back to the people who serviced your car.

[cassius1218]

the car is now back to the garrage until tomorrow. they seemd to be citroen specialists...but i don t know.  another problem occured on the way to garrage. a message on the dash board : SERVICE - " SUSPENSION FAULTY, MAX SPEED 60 MPH "  The suspension now is very very stiff.....i feel the speed bumps really bad. it does not go up and down anymore.....

[pdjones]

You have purchased a really complex vehicle. I have experience with mechanics having rebuilt motors in my youth but would not touch one of these beauties apart from checking the oil, water etc. Above advice is good but most importantly take it back to the mechanic. They should repair this.

[coastline taxis]

Id go with the maf  or air filter not sealed etc etc as these dont always through up a fault code. but your not going to really know till you get the car  plugged in and go to live data and take the car for a drive also the suspension fault will need a plug in aswell

[cassius1218]

i ve been to the garrage again..... they forgot to put back the MAP sensor.....now the car is back to what it used to be.......but they don t know themselves what is the fault with the suspension.... it just comes and goes this fault...... i ve noticed if i go over bumps  with car  full of passengers  this error comes quickly.... and after that suddenly comes back to normal..... this morning the car already started with this fault....even though yesterday it was fine...i don t know.. what it might be..... the only thing the mechanic told me was that the rear sensors we re rusty and that s why the rear suspension was getting blocked...... 

[paul.h]

The suspension sensors may just need spraying with something like wd40 to free them up and then take the suspension up/down a few times to clear the rust. The sensors may be on anti roll bars at the front and rear of the car. If you do this, put the car on axle stands so there is no risk of the suspension dropping whilst under the car.

[coastline taxis]

what is the fault with the suspension what is it doing

[cassius1218]

the sensors we re cleaned  2 weeks ago.. but the fault apeared after only 6 days after cleaning them...... The car is now at a citroen expert in garage..... first thing he noticed.... was the green fluid LHM...used for older Citroen ....and not the orange LDS..... and he said that this may have distroyed everything inside...power steering ...suspension pump.... but he will check this later today.

The fault is that the suspension gets blocked...and stiff. the car gets a bit lower than the normal driving position and i can t put it back up. I mean it shows me on the dash board  the signal "opening in progress" like the car would go up. but in reality it is not moving. The position now ...and for the last 2 days.... is the lowest posible... the one that you can use it for loading something in the boot.  But normally,  that position switches back to normal when car i starts moving. Always when i was opening the car i could hear the sound of the suspension pump leveling the car to the normal driving position. Now we i'm opening it the pump does nothing , and the car stays in the lowest position. And any pot holes on the road or speed bumps ...i fell them very rough ...like the car has no suspension at all.

[cassius1218]

.....and another question... which may have something to do with this green liquid : i have been to quick fit for air con recharge. They said it is not possible because there is a leak somwhere...my question is : Can this have anythiing to do with this power steering liquid?

[Johndouglas]

LHM should not have been put in your C5.   You may be lucky and find it hasn't done damage, but it will have to come out and the system be flushed through before being filled with LDS.   LHM is a hydraulic oil used in Citroens built before the start of the C5s.    And it would certainly not be used on the aircon.   Most aircon technicians test for leaks before regassing.    Maybe find another engineer.   From what I hear, Kwikfit are not amongst the best. 

[cassius1218]

well..... apparently the LHM distroyed the pump......this what the mechanic, the citroen specialist just told me now, ...and i ll have to go to the main dealer......

[coastline taxis]

Yep the green lhm will kill the pump and eventually the seals on the power steering rack and pump and the seals on the rams and hydraulic unions so get it out and do what john D has posted. And remember all c5 must have mineral based oils and fluids for the suspension and steering

[myglaren]

Although the suspension/steering fluid is green it may still be LDS.  Comma make LDS and it is green!

 

It is however said to be less viscous than the recommended Total LDS.

 

I do know someone who definitely had LHM in his LDS tank and although it didn't result in any damage it did foam and leak.

He drained and flushed with LDS then drained and refilled with LDS and had no furthere problems with it.

I actually think someone has topped mine up with Dexron II.  It is a rather uniusual colour compared with my previous C5 but works OK.  One day I might fix it, not any day soon though, been like it for over a year (I've had the car over a year and it was like that when I bought it)

 

Have you excersised the car with "Citroebics"?

While not as effective as with previous hydraulic Citroens it can be benificial*.  The trick is to raise the car fully, wait half a minute then lower to the lowest position.  Repeat five or more times.

This helps to keep the height correctors free and lubricates the rams in places that would normally dry out and become subject to corrosion in adverse conditions.

 

*amusing to do while waiting at traffic signals - the look of shock on the faces of adjacent cars is almost woth money :)

[DaveHerns]

Isn't LDS a synthetic oil ?  Isn't this like the days of the old DHS when later ones used LHM and earlier ones used something else which I think was water based and caused corrosion

[Johndouglas]

Isn't LDS a synthetic oil ?

 

You're right Dave.   It is synthetic.