Dieselman
Banned
- Joined
- Jul 13, 2003
- Messages
- 34,198
- Car
- Peugeot 403 Convertible
bolide said:
Nick
The exhaust manifold carries the stainless pipe and is definately made of cast iron. There have been odd members with cracked exhaust manifolds.
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
bolide said:
Dieselman said:Sorry, cant agree here.
EGR is caused when the volume of oxygen goes high compared to that of the fuel. This can only happen at low load conditions and especially at idle. The EGR valve is only actuated under these conditions.
Maybe you are thinking of petrol engines, don't forget there is no such thing a WOT on a diesel as the volume of air is constant per revolution as there is no throttle?
Just realised you were talking about the exhaust manifold... I have the (aluminium) inlet manifold etched on my mind as I've taken one off recently!Dieselman said:Nick
The exhaust manifold carries the stainless pipe and is definately made of cast iron. There have been odd members with cracked exhaust manifolds.
Sorry - I wasn't paying attention. I was referring to the inlet manifold. D'oh!Dieselman said:Nick
The exhaust manifold carries the stainless pipe and is definately made of cast iron. There have been odd members with cracked exhaust manifolds.
television said:Parrot, have you tried changing the EGR valve, its a waste of time cleaning them,when they go they normally stick parcially open.
malcolm
Not when they are stuck half open, that being the biggest fault or reason for failure.KLP 92 said:Easier to disengage them all together! Just disconnect the vaccum pipe.
Parrot of Doom said:Hmmm, I might consider that. Whereabouts would it be on my engine?
bolide said:While we're on the topic, why is there a Lambda sensor in an E300 Diesel with no turbo?
I've read that the car has electronically-stabilised idle and suspect it's used for that. But how does idle stabilisation work on a diesel?
My old 250TD sat at 700 rpm perfectly with no electronics...
Nick Froome
www.w124.co.uk
True. But why have a Cat and a Lambda sensor and no ECU or fuelling control?Parrot of Doom said:Your old 250TD probably didn't have a cat though.
But there's no ECU, no turbo, no means of controlling fuel or air feed...television said:Nick the lambada is there to check the exhaust emmisions it feeds back to the ECU that adjust the mixture accordingly Some cars have up to 3.
It has to be before the CAT so that it can protect it, that's why they always recommend that you change it when you have new CATs if you put up the first 6 number of the VIN you can have more details.230K said:Bolide
Where is the Lamda sensor located on the 300?
My 98 606 Turbodiesel doesnt have a Lamda sensor neither has the wifes 603.
Very interested to know where its located, before or after the CAT etc?
Thanks,
230K
bolide said:True. But why have a Cat and a Lambda sensor and no ECU or fuelling control?
But there's no ECU, no turbo, no means of controlling fuel or air feed...
So the Cat catalyses the exhaust, the Lambda sensor checks CO and then what? The car has a mechanical injection pump and no throttle. It does, however, have the EGR and inlet manifold butterfly valves - and they're pneumatically-controlled
Beats me why it's there. Maybe it's for the turbo cars and they didn't bother removing it. But AFAIK there's no ECU or fuelling control in the turbos either!
Nick Froome
www.w124.co.uk
television said:It has to be before the CAT so that it can protect it, that's why they always recommend that you change it when you have new CATs if you put up the first 6 number of the VIN you can have more details.
Malcolm
bolide said:While we're on the topic, why is there a Lambda sensor in an E300 Diesel with no turbo?
I've read that the car has electronically-stabilised idle and suspect it's used for that. But how does idle stabilisation work on a diesel?
My old 250TD sat at 700 rpm perfectly with no electronics...
Nick Froome
www.w124.co.uk
We use essential cookies to make this site work, and optional cookies to enhance your experience.