Engine stop rolling

[workaholic_ro]

Originally Posted by mikes75

Saw this on a website about lambda sensors,

"If a heated sensor has a faulty heating circuit or element, the sensor can cool off at idle causing the system to go into open loop. This usually results in a fixed, rich fuel mixture that will increase emissions.
Very important this item: generally, a faulty heating sensor will behave almost normally when the engine is warm, but at start up from cold, the engine may even stop when passing from 1st gear to 2nd or from this to 3rd"

Maybe some useful imformation.
Mike

I say it again: when cold, the engine runs in OPEN LOOP, regardless what lambda sensors think or tell. There is only one exception, when the temperature sensor is faulty, but in such a situation the radiator fan runs on full speed and the dashboard temp. indicator is on red, both for safety reasons.
Therefore, if the temp. sensor works and the engine runs normal when cold and doesn't when hot it is the lambda sensor, otherwise not.

[jymix]

This morning, I used The scan diagnostic tool to check the trouble codes, there are the results:
code P0172 - System too rich (group 1)
code P0175 - System too rich (group 2)
code P0151 - O2 sensor, low voltage circuit (group 2, Sensor 1)
and
code P0304 - Piston 4, detection of failed ignition

The cause here would likely be something that upsets the engine's air/fuel mixture, such as a major vacuum leak, leaky EGR valve or unusually low fuel pressure (weak pump or faulty pressure regulator).
...There's really no magic bullet for finding misfires. It takes a certain amount of detective work to isolate the fault and determine the underlying cause

[SD1too]

Originally Posted by jymix

Ok Simon,
I've thought too. I'll do it tomorrow.

Donc, avez-vous fait (réaménagé les capteurs d'origine lambda)?

So have you done it (refitted the original lambda sensors)?

Simon

[SD1too]

Originally Posted by workaholic_ro

I say it again: when cold, the engine runs in OPEN LOOP, regardless what lambda sensors think or tell.

Fidel,

Yes, but James' engine gives trouble not when cold but when at normal running temperature. At that time the signal from the lambda sensors will be utilised by the ECM won't it?

In any case, he has replaced the original sensors with 'universal' types for no apparent reason. So there's no reason not to return to the safety of the original parts, particularly as the mixture is too rich.

Simon

[jymix]

I just start the car:
The engine always starts at the first stroke of a key, but the engine became very low. Therefore the engine is not running well and grazes.
without changing anything (mon capot est toujours bloqué)
Today
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Two days ago when the engine was running well enough Photo0319.jpg

[MikeHurley]

James,
How are you progressing? There are many of us wishing you the best on the final stage. Please keep us informed of your latest efforts.

We know the weather is very cold which may be preventing you working on "Le Voiture"

Regards

[jymix]

Originally Posted by MikeHurley

James,
How are you progressing? There are many of us wishing you the best on the final stage. Please keep us informed of your latest efforts.

We know the weather is very cold which may be preventing you working on "Le Voiture"

Regards

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Photo0324.jpg

Hi,
I'm back
I said that my filter does not contientient fuel filter removed. Apparently this is a model without filter change.
Has anyone ever had to change the rings of this type of filter?

[jymix]

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If I ask is that it is difficult to remove and install the filter without putting pressure on the O-rings in the same dishwashing liquid lubricant ... Obviously the filter seal is compromised.

I invite all those whose car is equipped with this type of filter never touch it because it requires no maintenance.

[jymix]

Hello,
it's been almost two weeks since I gave my car to a specialist injection systems of car engines of all brands including Rover, Jaguar, etc. .. Bosch is approved and has a very good reputation.
This mechanic has diagnosed a problem and a problem of pressure on a cylinder compresion without specifying which.
The pressure problem is caused by the O-rings on my fuel filter. However, we find these O-rings anywhere in France
My mechanic and I are looking for these O-rings for my model fuel filter. He tried several rings but unfortunately the pressure is less than 2 bars.
He explained that failing to find these O-rings, he will have to replace the filter and it cost me over € 500 without labor.
On the other hand, he was diagnosed with a compression problem on a cylinder without specifying which.
I'll see him tomorrow but in the meantime, can you help me find the three O-rings on my fuel filter?
If you have an idea, do not hesitate please.

Jymix

[kaiser]

If this is indeed an O-ring problem, it should not be difficult to source an O-ring if you know the dimensions.
Some people can make them up for you, at a far more reasonable cost!
I would contact a supplier of bearings and seals.

I am not quite sure I understand the problem of low compression on one cylinder, is he talking about bent valves or is he taking about the pressure of the fuel delivery.

Don't forget to test the pumps delivery pressure as well. It is possible that it is too low.

Good to hear you are in one piece!