Air Inlet Valve & Egr Valve

[lawser]

Hi Folks,

 

My '03 C5 2.0 HPI Exclusive estate with just under 40,000 on the clock has just started with a lot of the faults described on the forum. The main one now seems to be the hesitation on accelerating, which then seems to kick the car into the old Anti pollution fault that seems so common, which then throws up the ESP fault and then goes into limp mode.

From what i see on the forum is it worth my while finding the EGR valve and replacing/ cleaning...Does the petrol version of the C5 even have the elusive EGR valve ? :)

 

Or do i look for the nearest Quarry ?

[techbod]

yes it does have an EGR valve and cleaning it out is a good idea you should find it close to the exhaust manifold

[lawser]

Thanks for the advice techbod,

 

Had a good look today but try as i might i cannot locate the valve, don't suppose you have a picture of where it may be located ?

Another funny thing also, whenever i remove the air filter and replace it, it seems to reset the service lights :)

 

Any suggestions ?

 

Cheers,

 

lawser

 

yes it does have an EGR valve and cleaning it out is a good idea you should find it close to the exhaust manifold

[techbod]

no pictures im afraid cant even find a decent picy of the engine :) but its on the rear of the engine so you have to remove the plastic cover and look down the back near the manifolds, other issue could be it needs a new air filter or there is a blockage in the inlet from the filter side but the egr could cause it as well because you have let air into the system and as soon as you put the filter back on it clogs up again so an investigation is in order

[lawser]

The car has just been serviced and new filter fitted, so i think i can rule out the filter being dirty....I'm always dubious of garages and check things like that.

But that makes more sense to me now...I've been looking around the front of the engine :)

Cheers,

 

lawser

 

no pictures im afraid cant even find a decent picy of the engine :( but its on the rear of the engine so you have to remove the plastic cover and look down the back near the manifolds, other issue could be it needs a new air filter or there is a blockage in the inlet from the filter side but the egr could cause it as well because you have let air into the system and as soon as you put the filter back on it clogs up again so an investigation is in order

[lawser]

Had a quick look, unfortunately there's a heat shield of some kind that makes access impossible and i can't work out how this is removed as i can't see what holds it on.....Roll on the Haynes manual !

 

Once again thanks for the help,

 

lawser

 

The car has just been serviced and new filter fitted, so i think i can rule out the filter being dirty....I'm always dubious of garages and check things like that.

But that makes more sense to me now...I've been looking around the front of the engine :)

Cheers,

 

lawser

[iannez]

best way to check egr valve is with a mighty vac. remove the vacume pipe and connect it to the vac and pump away. now release the pressure and listen for the valve snapping shut. if you hear this its ok. the main thing to check on these is the cam pullys. one of them is rubber bushed. the rubber splits and retards the timing. thats why some of the hpi's sound like diesels.

[lawser]

I've just had the Camshaft Defazer replaced, as apparently this was the cause of the " diesel sounding engine ".....It does sound far better but i still have the hesitant acceleration, which seems to trip the limp home mode at times !...But that is food for thought.....The car was fine until i put it in for a service...Just makes you think <_<

 

best way to check egr valve is with a mighty vac. remove the vacume pipe and connect it to the vac and pump away. now release the pressure and listen for the valve snapping shut. if you hear this its ok. the main thing to check on these is the cam pullys. one of them is rubber bushed. the rubber splits and retards the timing. thats why some of the hpi's sound like diesels.

[techbod]

very interesting but still the EGR sounds like you problem ill check out what the dephaser does, ok before the service? doesn't sound healthy for the garage that did it I would be onto them for that

[techbod]

just had a quick google and its the cam sprocket/cog and expensive £113 on ebay and that would effect the cam timing

[lawser]

Thanks for that techbod,

 

Not a lot i can do as the service has been done and defazer replaced already on their advice.....I have complained bitterly about the running of the car since the service, although on a more positive note it's sounding a lot less like a diesel now, perhaps they were on the right track !

They are recommending a new coil pack now but i tend to disagree with that on the basis of what i see on this forum......I have a second hand coil coming on Monday from my local garage (Non citroen) to let me try out and see if their is any difference in performance...I guess from the result of that it should point me in the right direction either way !

 

Thans again for the help,

 

lawser

 

just had a quick google and its the cam sprocket/cog and expensive £113 on ebay and that would effect the cam timing